id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
|---|---|---|---|---|---|---|
astro-ph/9411035 | The Anisotropy in the Cosmic Microwave Background At Degree Angular
Scales | We detect anisotropy in the cosmic microwave background (CMB) at degree
angular scales and confirm a previous detection reported by Wollack et al.
(1993). The root-mean-squared amplitude of the fluctuations is $44^{+13}_{-7}
\mu$K. This may be expressed as the square root of the angular power spectrum
in a band of mult... | 1994-11-08 | 2008-11-26 | [
"astro-ph"
] | C. B. Netterfield, N. Jarosik, L. Page, D. Wilkinson, E. Wollack |
astro-ph/9411030 | Constraints on the Formation History of the Elliptical Galaxy NGC 3923
from the Colors of Its Globular Clusters | We present a study of the colors of globular clusters associated with the
elliptical galaxy NGC 3923. Our final sample consists of Washington system C
and T_1 photometry for 143 globular cluster candidates with an expected
contamination of no more than 10%. We find that the color distribution of the
NGC 3923 globular c... | 1994-11-07 | 2009-10-22 | [
"astro-ph"
] | Stephen E. Zepf, Keith M. Ashman, and Doug Geisler |
astro-ph/9411023 | Stellar Evolution and Mass Loss on the Asymptotic Giant Branch | Mass loss dominates the stellar evolution on the Asymptotic Giant Branch. The
phase of highest mass-loss occurs during the last 1--10\% of the AGB and
includes the so-called Miras and OH/IR stars. In this review I will discuss the
characteristics and evolution of especially Miras, and discuss how they are
linked to the... | 1994-11-07 | 2009-10-22 | [
"astro-ph"
] | Albert A. Zijlstra |
astro-ph/9411028 | Network Resources for Astronomers | The amount of data produced by large observational facilities and space
missions has led to the archiving and on-line accessibility of much of this
data, available to the entire astronomical community. This allows a much wider
multi-frequency approach to astronomical research than previously possible.
Here we provide a... | 1994-11-07 | 2009-10-22 | [
"astro-ph"
] | H.Andernach, R.J.Hanisch and F.Murtagh |
astro-ph/9411025 | On the galaxy luminosity function in the central regions of the Coma
cluster | We have obtained new redshifts for 265 objects in the central
48~$\times$~25~arcmin$^2$ region of the Coma cluster. When supplemented with
literature data, our redshift sample is 95~\% complete up to a magnitude
b$_{26.5}$=18.0 (the magnitudes are taken from the photometric sample of Godwin
et al. 1983). Using redshift... | 1994-11-07 | 2007-05-23 | [
"astro-ph"
] | A. Biviano, F. Durret, D. Gerbal, O. Le F\`evre, C. Lobo, A. Mazure,
E. Slezak |
astro-ph/9411031 | A New Criterion for Bar-Forming Instability in Rapidly Rotating Gaseous
and Stellar Systems. I. Axisymmetric Form | We analyze previous results on the stability of uniformly and differentially
rotating, self-gravitating, gaseous and stellar, axisymmetric systems to derive
a new stability criterion for the appearance of toroidal, m=2 Intermediate (I)
and bar modes. In the process, we demonstrate that the bar modes in stellar
systems ... | 1994-11-07 | 2007-09-24 | [
"astro-ph"
] | D.M. Christodoulou, I. Shlosman, J.E. Tohline |
astro-ph/9411029 | Recent Developments in Weak Lensing | Measurement of the gravitational distortion of images of distant galaxies is
rapidly becoming established as a powerful probe of the dark mass distribution
in clusters of galaxies. With the advent of large mosaics of CCD's these
methods should provide a composite total mass profile for galaxy haloes and
also measure th... | 1994-11-07 | 2007-05-23 | [
"astro-ph"
] | Nick Kaiser, Gordon Squires, Greg Fahlman, David Woods and Tom
Broadhurst |
astro-ph/9411027 | How Complete is the Electronic Catalogue Archive at CDS in the
Extragalactic Domain? | From the literature of 1987 to 1993 a representative sample was prepared of
500 papers with tabular information for >~50 supposedly extragalactic objects
each. Regardless of their scientific value, but corrected for redundancy, these
papers contain 842,000 entries. For the 374 papers with >100 entries each, the
CDS FTP... | 1994-11-07 | 2007-05-23 | [
"astro-ph"
] | H. Andernach |
astro-ph/9411026 | Extragalactic Databases: Present and Future | Current extragalactic databases are reviewed, including object-oriented
databases, astronomical catalogues and compilations, as well as image archives
and object catalogues from large-scale surveys. One challenge of the future
will be to maintain the accessibility of all published information on
individual objects; the... | 1994-11-07 | 2007-05-23 | [
"astro-ph"
] | H. Andernach |
astro-ph/9411024 | Ages of Galactic Globular Clusters from the New Yale Isochrones | A new grid of theoretical isochrones based on the Yale stellar evolution code
using the OPAL and Kurucz opacities has been constructed. The grid of
isochrones spans a wide range of metallicities, helium abundances and masses.
The construction of the isochrones is described and the isochrones are compared
to galactic gl... | 1994-11-07 | 2007-05-23 | [
"astro-ph"
] | Brian Chaboyer, P. Demarque, D.B. Guenther, M.H. Pinsonneault & L.L.
Pinsonneault |
astro-ph/9411022 | Local Nonlinear Approximations to the Growth of Cosmic Structures | Local nonlinear approximations to the growth of cosmic perturbations are
developed, resulting in relations, at a given epoch, between the peculiar
velocity and gravity fields and their gradients. Only the equation of motion is
approximated, while mass conservation and the computation of the gravitational
field are trea... | 1994-11-06 | 2009-10-22 | [
"astro-ph"
] | Paul J. Mancinelli and Amos Yahil |
astro-ph/9411020 | Cold + Hot Dark Matter Cosmology with $m(\nu_\mu) \approx m(\nu_\tau)
\approx 2.4$ ev | Cold + Hot Dark Matter (CHDM) $\Omega=1$ cosmological models require a total
neutrino mass $\sim 5$ eV. Because recent data support the $\nu_\mu \to
\nu_\tau$ oscillation explanation of the cosmic ray $\nu_\mu$ deficit, which
requires that $m(\nu_\mu) \approx m(\nu_\tau)$, this suggests that $m(\nu_\mu)
\approx m(\nu_\... | 1994-11-05 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | Joel R. Primack, Jon Holtzman, Anatoly Klypin, and David O. Caldwell
Comments 8 pages, uuencoded compressed .ps file |
astro-ph/9411021 | The EINSTEIN On-Line Service | The Einstein On-Line Service (EOLS) is a simple menu-driven system which
provides an intuitive method of querying over one hundred database catalogs. In
addition, the EOLS contains over 30 CDROMs of images from the Einstein X-ray
Observatory which are available for downloading. The EOLS provides all of our
databases to... | 1994-11-05 | 2007-05-23 | [
"astro-ph"
] | D.E.Harris, C.S.Grant, and H.Andernach |
astro-ph/9411019 | Theory of Exploring the Dark Halo with Microlensing 1: Power--Law Models | The detection of microlensing has opened the way for the development of new
methods in galactic astronomy. This series of papers investigates what
microlensing can teach us about the structure and shape of the dark halo. In
this paper we present formulas for the microlensing rate, optical depth and
event duration distr... | 1994-11-04 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | C.Alcock, R.A.Allsman, T.S.Axelrod, D.P. Bennett, K.H.Cook, N.W.Evans,
K.C.Freeman, K. Griest, J.Jijina, M. Lehner, S.L.Marshall, S.Perlmutter,
B.A.Peterson, M.R. Pratt, P.J.Quinn, A.W.Rodgers, C.W.Stubbs, and W.
Sutherland (the MACHO collaboration) |
astro-ph/9411018 | A Scenario for a Baryonic Dark Halo | The recent observations of microlensing events in the LMC by the MACHO and
EROS collaborations suggest that an important fraction of the galactic halo is
in the form of Massive Halo Objects (MHO) of about 0.1 M_{\odot}. Here, we
argue that the galactic halo is mainly baryonic and that besides MHO also H_2
molecular clo... | 1994-11-04 | 2011-05-23 | [
"astro-ph"
] | F. DePaolis, G. Ingrosso, Ph. Jetzer and M. Roncadelli |
astro-ph/9411014 | Higher Order Statistics from the Apm Galaxy Survey | We apply a new statistics, the factorial moment correlators, to density maps
obtained from the APM survey. The resulting correlators are all proportional to
the two point correlation function, substantially amplified, with an
amplification nearly exponential with the total rank of the correlators. This
confirms the val... | 1994-11-03 | 2009-10-22 | [
"astro-ph"
] | Istv\'an Szapudi, Gavin Dalton, George Efstathiou and Alexander Szalay |
astro-ph/9411016 | Solar-like oscillations in eta Boo | We have observed evidence for $p$-mode oscillations in the G0 IV star etaBoo
(V = 2.68). This represents the first clear evidence of solar-like oscillations
in a star other than the Sun. We used a new technique which measures
fluctuations in the temperature of the star via their effect on the equivalent
widths of the B... | 1994-11-03 | 2009-10-22 | [
"astro-ph"
] | Hans Kjeldsen, Timothy R. Bedding, Michael Viskum & Soeren Frandsen |
astro-ph/9411013 | Application of Gradient Expansion to Inflationary Universe | Using the long wave perturbation scheme(gradient expansion), the effect of
inhomogeneity on the inflationary phase is investigated. We solved the
perturbation equation of which source term comes from inhomogeneity of a scalar
field and a seed metric. The result indicates that sub-horizon scale
inhomogeneity strongly af... | 1994-11-03 | 2009-10-22 | [
"astro-ph",
"gr-qc"
] | Yasusada Nambu and Atsushi Taruya |
astro-ph/9411015 | The radio spectrum of Sgr A* | We discuss the radio spectrum of Sgr A* \index{Sgr A*, radio spectrum} in the
frequency range between $\approx 1\,{\rm GHz}$ and $\approx 1\,000\,{\rm GHz}$,
show that it can be explained by optically thin synchrotron radiation
\index{Sgr A*, synchrotron radiation, optically thin} of relativistic
electrons, and point t... | 1994-11-03 | 2007-05-23 | [
"astro-ph"
] | Wolfgang J. Duschl and Harald Lesch |
astro-ph/9411012 | Competition of Supermassive Black Holes and Galactic Spheroids in the
Destruction of Globular Clusters | The globular clusters that we observe in galaxies may be only a fraction of
the initial population. Among the evolutionary influences on the population is
the destruction of globular clusters by tidal forces as the cluster moves
through the field of influence of a disk, a bulge, and/or a putative nuclear
component (bla... | 1994-11-03 | 2009-10-22 | [
"astro-ph"
] | Jane C. Charlton and Pablo Laguna |
astro-ph/9411017 | The Cosmological Mass Distribution from Cayley Trees with Disorder | We present a new approach to the statistics of the cosmic density field and
to the mass distribution of high-contrast structures, based on the formalism of
Cayley trees. Our approach includes in one random process both fluctuations and
interactions of the density perturbations. We connect tree-related quantities,
like ... | 1994-11-03 | 2009-10-22 | [
"astro-ph"
] | A. Cavaliere, and N. Menci |
astro-ph/9411010 | Global field dynamics and cosmological tructure formation | We discuss gravitational effects of global scalar fields and, especially, of
global topological defects. We first give an introduction to the dynamics of
global fields and the formation of defects. Next we investigate the induced
gravitational fields, first in a flat background and then in the expanding
universe. In fl... | 1994-11-02 | 2009-09-25 | [
"astro-ph"
] | Ruth Durrer |
astro-ph/9411011 | The Evolution of C/O in Dwarf Galaxies from HST Fos Observations | We present FOS observations of O III] 1666 A and C III] 1909 A emission in H
II regions in dwarf irregular galaxies to measure C/O abundance ratios in those
galaxies. We observe a continuous increase in C/O with increasing O/H over the
range -4.7 < log(O/H) < -3.6. One interpretation is that the most metal-poor
galaxie... | 1994-11-02 | 2009-10-22 | [
"astro-ph"
] | D. R. Garnett, E. D. Skillman, R. J. Dufour, M. Peimbert, S.
Torres-Peimbert, R. J. Terlevich, E.Terlevich, and G. A. Shields |
astro-ph/9411005 | A Method for Weak Lensing Observations | We develop and test a method for measuring the gravitational lensing induced
distortion of faint background galaxies. We first describe how we locate the
galaxies and measure a 2-component `polarisation' or ellipticity statistic
$e_\alpha$ whose expectation value should be proportional to the gravitational
shear $\gamm... | 1994-11-01 | 2009-10-16 | [
"astro-ph"
] | Nick Kaiser, Gordon Squires, and Tom Broadhurst |
astro-ph/9411006 | Discovery of a z=2.76 Dusty Radio Galaxy? | We report the discovery of a z=2.76 radio galaxy, MG1019+0535, with an
unusual spectrum. Ly$\alpha$, which usually dominates the spectra of high
redshift radio galaxies, is very weak and the strongest lines in the spectrum
are CIV$\lambda$1549 and HeII$\lambda$1640. We speculate that dust is
responsible for attenuating... | 1994-11-01 | 2009-10-22 | [
"astro-ph"
] | Arjun Dey (U.C.Berkeley), Hyron Spinrad (U.C.Berkeley), and Mark
Dickinson (STScI) |
astro-ph/9411007 | Keck Observations of the Most Distant Galaxy: 8C1435+63 at z=4.25 | We report on Keck observations and confirm the redshift of the most distant
galaxy known: 8C1435+63 at z=4.25. The spectrum shows a strong Ly$\alpha$ line,
a Ly$\alpha$ forest continuum break and a continuum break at
$\lambda_{rest}=912$\AA. The Ly$\alpha$ emission is spatially extended and
roughly aligned with the rad... | 1994-11-01 | 2009-10-22 | [
"astro-ph"
] | Hyron Spinrad, Arjun Dey and James R. Graham (U.C.Berkeley) |
astro-ph/9411002 | The Least Action Method, CDM and $\Omega$ | Peebles has suggested an interesting method to trace back in time positions
of galaxies called the least action method. This method applied on the Local
Group galaxies seems to indicate that we live in an $\Omega\approx 0.1$
Universe. We have studied a CDM N-body simulation with $\Omega=0.2$ and $H=50
kms^{-1}/Mpc$ and... | 1994-11-01 | 2009-10-22 | [
"astro-ph"
] | A.M. Dunn and Raymond Laflamme |
astro-ph/9411003 | Galactic Chemical Evolution: Hydrogen Through Zinc | Using the output from a grid of 60 Type II supernova models (Woosley \&
Weaver 1994) of varying mass (11 $\ltaprx$ M/M\sun $\ltaprx$ 40) and
metallicity (0, 10$^{-4}$, 0.01, 0.1, and 1 Z\sol), the chemical evolution of
76 stable isotopes, from hydrogen to zinc, is calculated. The chemical
evolution calculation employs ... | 1994-11-01 | 2009-10-22 | [
"astro-ph"
] | by F. X. Timmes, S. E. Woosley and Thomas A. Weaver |
astro-ph/9411001 | Cosmological Simulations Using Special Purpose Computers: Implementing
P3M on Grape | An adaptation of the Particle-Particle/Particle-Mesh (P3M) code to the
special purpose hardware GRAPE is presented. The short range force is
calculated by a four chip GRAPE-3A board, while the rest of the calculation is
performed on a Sun Sparc 10/51 workstation. The limited precision of the GRAPE
hardware and algorith... | 1994-11-01 | 2009-10-22 | [
"astro-ph"
] | Philippe P. Brieu, FJ Summers, & Jeremiah P. Ostriker |
astro-ph/9411008 | Toward Understanding CMB Anisotropies and Their Implications | Working toward a model independent understanding of cosmic microwave
background (CMB) anisotropies and their significance, we undertake a
comprehensive and self-contained study of scalar perturbation theory. Initial
conditions, evolution, thermal history, matter content, background dynamics,
and geometry all play a rol... | 1994-11-01 | 2009-09-25 | [
"astro-ph"
] | Wayne Hu and Naoshi Sugiyama |
astro-ph/9411009 | Galaxy Formation from Spectroscopy of Extragalactic Globular Cluster
Systems | I discuss how spectroscopy of extragalactic globular clusters provides a
powerful probe of the formation history and mass distribution of galaxies. One
critical area is spectroscopy of objects which have been identified as
candidate young globular clusters through HST imaging of galaxy mergers. I
discuss how such data ... | 1994-11-01 | 2007-05-23 | [
"astro-ph"
] | Stephen E. Zepf |
astro-ph/9411004 | Results from the Optical Gravitational Lensing Experiment (OGLE) | The analysis of the first three years of the OGLE data revealed 12
microlensing events of the Galactic bulge stars, with the characteristic time
scales in the range $ 8.6 < t_0 < 80 $ days, where $ t_0 = R_E / V $. A
complete sample of nine events gave the optical depth to gravitational
microlensing larger than $(3.3 \... | 1994-11-01 | 2007-05-23 | [
"astro-ph"
] | B. Paczynski, K. Z. Stanek, A. Udalski, M. Szymanski, J. Kaluzny, M.
Kubiak, M. Mateo, W. Krzeminski and G. W. Preston |
astro-ph/9410097 | Cosmic String Theory: The Current Status | This is a pedagogical introduction to the basics of the cosmic string theory
and also a review of the recent progress made with respect to the macrophysical
predictions of the theory. Topics covered include, string formation and
evolution, large scale structure formation, generation of peculiar velocity
flows, cosmic m... | 1994-10-31 | 2009-09-25 | [
"astro-ph",
"hep-ph"
] | L. Perivolaropoulos (MIT, Center for Theoretical Physics) |
astro-ph/9410098 | Polarisation as a Tool for Gravitational Microlensing Surveys | Much interest has been generated recently by the ongoing MACHO, EROS and OGLE
projects to identify gravitationally lensed stars from the Large Magellanic
Cloud and Galactic bulge, and the positive identification of several events
(Alcock et al, (1993), Aubourg et al, (1993) and Udalski et al, (1993)). The
rate at which... | 1994-10-31 | 2007-05-23 | [
"astro-ph"
] | J.F.L. Simmons, J.P. Willis, A. Newsam |
astro-ph/9410096 | Influence of the Stellar Mass Function on the Evaporation Rate of
Tidally Limited Postcollapse Globular Clusters | We study the rate of escape of stars (``evaporation'') from tidally-limited
postcollapse globular clusters having a power-law distribution of stellar
masses. We use a multi-mass Fokker-Planck code and assume a steady tidal field.
Stellar-dynamical processes cause the inner parts of the cluster to expand,
which in turn ... | 1994-10-31 | 2007-05-23 | [
"astro-ph"
] | Hyung Mok Lee and Jeremy Goodman |
astro-ph/9410095 | Galaxy Group Analysis - a Robust Discriminator between Cosmological
Models: Cold+HOT Dark Matter and CDM Confront Cfa1 | We present techniques for identifying and analyzing galaxy groups and show
that they provide a powerful discriminator between cosmological models. We
apply these to high-resolution PM N-body simulations of structure formation in
CHDM (cold/hot/baryon fractions=.6/.3/.1, b=1.5 (COBE norm) and two CDM models;
b=1.5 and b... | 1994-10-30 | 2009-09-25 | [
"astro-ph"
] | R. Nolthenius, A.A. Klypin, J.R. Primack |
astro-ph/9410094 | Neutrino Mixing Constraints and Supernova Nucleosynthesis | We reexamine the constraints on mixing between electron and muon or tau
neutrinos from shock-reheating and r-process nucleosynthesis in supernovae. To
this end neutrino flavor evolution is described by nonlinear equations
following from a quantum kinetic approach. This takes into account neutrino
forward scattering off... | 1994-10-29 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | G.Sigl |
astro-ph/9410093 | On the Dynamical Origin of Bias in Clusters of Galaxies | We study the effect of the dynamical friction induced by the presence of
substructure on the statistics of the collapse of density peaks. Applying the
results of a former paper we show that within high density environments, like
rich clusters of galaxies, the collapse of smaller peaks is strongly delayed
until very lat... | 1994-10-29 | 2009-10-22 | [
"astro-ph"
] | S. Colafrancesco, V. Antonuccio-Delogu and A. Del Popolo |
astro-ph/9410089 | Lithium and the Nature of Brown Dwarf Candidates | This paper discusses the ability of Li to confirm the substellar nature of a
brown dwarf candidate. Theoretical computations using different interior models
agree that brown dwarfs with masses below $\sim$ 0.065 M$_{\odot}$ preserve a
significant fraction of their initial Li content while for higher masses total
Li dep... | 1994-10-28 | 2007-05-23 | [
"astro-ph"
] | R. Rebolo, A. Magazzu, E.L. Martin |
astro-ph/9410091 | Chaos, Regularity, and Noise in Self-Gravitating Systems | This paper summarises a number of new, potentially significant, results,
obtained recently by the author and his collaborators, which impact on various
issues related to the gravitational N-body problem, both Newtonianly and in the
context of general relativity. Topics addressed include: (1) direct N-body
simulations a... | 1994-10-28 | 2008-02-03 | [
"astro-ph",
"chao-dyn",
"gr-qc",
"nlin.CD"
] | Henry E. Kandrup |
astro-ph/9410092 | Southern Binary Galaxies. I. a Sample of Isolated Pairs | A catalogue of binary galaxies with 621 pairs has been determined by applying
a surface density enhancement procedure to {\it The Surface Photometry
Catalogue of the ESO-Uppsala Galaxies}. The method does not require any
redshift information. An additional restriction, based on objective criteria
that take into account... | 1994-10-28 | 2007-05-23 | [
"astro-ph"
] | D.S.L. Soares, R.E. de Souza, R.R. de Carvalho, T.C. Couto da Silva |
astro-ph/9410087 | Vilnius CCD Photometry of Southern Clusters: Some Preliminary Results | The Vilnius Photometric system has been used with a CCD system only once
before this study. Preliminary crowded field reductions of Vilnius CCD
observations of the star clusters NGC~2004 and NGC~4755 (the $\kappa $ Crucis
cluster) are presented, demonstrating the feasibility of using the filter set
in this manner. | 1994-10-28 | 2009-09-25 | [
"astro-ph"
] | Timothy Banks, D.J. Sullivan, M.C. Forbes, & R.J. Dodd |
astro-ph/9410090 | Morhology and kinematics of eta Carinae | We present a high-resolution image of $\eta$~Car. Together with IR and visual
observations of the central arcsecond, we use this to discuss the morphological
structure of $\eta$~Car on the different length scales. We identify three
different structural components: a bipolar outflow, an equatorial disk of
streamers, and... | 1994-10-28 | 2007-05-23 | [
"astro-ph"
] | W.J.Duschl, K.-H.Hofmann, F.Rigaut, G.Weigelt |
astro-ph/9410086 | Anatomy of the Sagittarius A complex: IV. Sgr A* and the Central Cavity
revisi- ted | We present submm images of Sgr A* and its surroundings obtained at 800, 600
and 450 $\mu$m with the JCMT and derive flux densities of Sgr A* at all three
wave- lengths. Combined with upper limits by Gezari and associates at MIR
wavelengths a time averaged radio spectrum is obtained which increases $\propto
\nu^{1/3}$, ... | 1994-10-27 | 2007-05-23 | [
"astro-ph"
] | R.Zylka, P.G.Mezger, D.Ward-Thompson, W.J.Duschl, H.Lesch |
astro-ph/9410084 | Hot bubble and slow wind dynamics in PNe (Radiation-gasdynamics of PNe
V) | This paper looks into various aspects brought to light by numerical work on
the generalized interacting winds model for planetary nebulae. First, a
detailed comparison between radiative and non-radiative models is made, showing
that one's naive expectations of the effects of radiative heating and cooling
are not always... | 1994-10-27 | 2007-05-23 | [
"astro-ph"
] | Garrelt Mellema and Adam Frank |
astro-ph/9410088 | A First Map of the CMB at 0.5Deg Resolution | We use a Maximum Entropy technique to reconstruct a map of the microwave sky
near the star Gamma Ursae Minoris, based on data from flights 2, 3 and 4 of the
Millimeter-wave Anisotropy eXperiment (MAX). | 1994-10-27 | 2009-10-22 | [
"astro-ph"
] | M.White and E.Bunn (CfPA) |
astro-ph/9410083 | Inflation as the Unique Causal Mechanism for Generating Density
Perturbations on Scales Well Above the Hubble Radius | An examination is made of the widely held belief that inflation is the only
possible causal mechanism capable of generating density perturbations on scales
well in excess of the Hubble radius. A simple proof is given, which relies only
on the assumption that our understanding of the universe from nucleosynthesis
onward... | 1994-10-27 | 2010-01-06 | [
"astro-ph"
] | Andrew R Liddle |
astro-ph/9410082 | Young LMC star clusters as a test for stellar evolutionary models: | We compare the observed colour-magnitude diagrams (CMD) and the main sequence
luminosity functions (LFs) of four Large Magellanic Cloud (LMC) star clusters
namely, NGC 1711, NGC 2004, NGC 2164 and NGC 2214 with the synthetic ones
derived from the stellar evolutionary models. Four different types of stellar
evolutionary... | 1994-10-27 | 2007-05-23 | [
"astro-ph"
] | Annapurni Subramaniam, Ram Sagar |
astro-ph/9410085 | Hydrodynamic Evolution of Coalescing Compact Binaries | In addition to their possible relevance to gamma-ray bursts, coalescing
binary neutron stars have long been recognized as important sources of
gravitational radiation that should become detectable with the new generation
of laser interferometers such as LIGO. Hydrodynamics plays an essential role
near the end of the co... | 1994-10-27 | 2007-05-23 | [
"astro-ph"
] | F. A. Rasio and S. L. Shapiro |
astro-ph/9410081 | Analysis of Small and Medium-Scale Cosmic Microwave Background
Experiments | Anisotropies in the temperature of the cosmic microwave background have been
detected on a range of scales by several different experiments. These
anisotropies reflect the primordial spectrum of metric perturbations in the
early universe. In principle, the largest barrier to a clean interpretation of
the experimental r... | 1994-10-26 | 2009-10-22 | [
"astro-ph"
] | Scott Dodelson (Fermilab) and Arthur Kosowsky (University of Chicago
and CFA) |
astro-ph/9410079 | Momentum transfer by an internal source of ionizing radiation - an
important feedback process during galaxy formation ?! | The role of momentum transfer (``radiation pressure'') due to an internal
source of ionizing radiation for the formation of baryonic structures is
investigated. Fully-ionized self-gravitating gaseous objects can be
radiation-pressure supported on a characteristic length scale $D_{\rm rp} \sim
100 \pc - 3 \kpc$. On smal... | 1994-10-25 | 2015-06-24 | [
"astro-ph"
] | Martin G. Haehnelt |
astro-ph/9410080 | Wiener Reconstruction of The Large Scale Structure | The formalism of Wiener filtering is developed here for the purpose of
reconstructing the large scale structure of the universe from noisy, sparse and
incomplete data. The method is based on a linear minimum variance solution,
given data and an assumed \prior model which specifies the covariance matrix of
the field to ... | 1994-10-25 | 2009-10-22 | [
"astro-ph"
] | S. Zaroubi, Y. Hoffman, K.B. Fisher and O. Lahav |
astro-ph/9410075 | NGC 4526 gas, High Velocity Clouds, and Galactic Halo gas: the
Interstellar Medium towards SN 1994D | We present spectroscopic observations of supernova 1994D in NGC 4526, an
S0$_3$ galaxy in the Virgo cluster 15 Mpc distant. The datasets consist of the
interstellar Ca\II\ and Na\I\ lines towards the supernova at high spectral
resolution (FWHM 6 \kms), \halpha\ and [N\,II] observations at lower resolution
(FWHM 33 \kms... | 1994-10-24 | 2007-05-23 | [
"astro-ph"
] | D. L. King (RGO), G. Vladilo (Trieste), K. Lipman (IoA), K. S. de Boer
(Bonn), M Centurion (IAC), P. Moritz (Bonn), N. A. Walton (RGO) |
astro-ph/9410078 | A deep ROSAT survey - IV. The evolution of X-ray-selected QSOs | We report on a new estimate of the QSO X-ray luminosity function and its
evolution with redshift based on a sample of 107 QSOs detected at faint X-ray
fluxes, $S{\rm(0.5-2\,keV)}>4\times10^{-15}\,$\ergcms , with the {\it ROSAT}
X-ray satellite. For $q_0=0.5$, the X-ray evolution of QSOs in this sample is
consistent wit... | 1994-10-24 | 2015-06-24 | [
"astro-ph"
] | B.J.Boyle (IoA, Cambridge), T.Shanks (Durham), I.Georgantopoulos
(Leicester) G.C.Stewart (Leicester) and R.E.Griffiths (JHU) |
astro-ph/9410076 | Arc Statistics with Realistic Cluster Potentials. III. a Systematic
Effect on Cluster Mass Estimates | It is shown in this paper that deviations of galaxy cluster lenses from
spherical symmetry can render mass estimates for galaxy clusters based on the
formation of large arcs systematically to high. Numerical models show that the
mass needed for producing large arcs in clusters can be notably smaller than
expected from ... | 1994-10-24 | 2011-05-23 | [
"astro-ph"
] | Matthias Bartelmann |
astro-ph/9410074 | Interstellar Titanium in the Galactic Halo | We present observations of Ti~II~$\lambda 3384$ absorption towards 15 distant
stars in the Galactic halo and the Magellanic Clouds. These new data extend
existing surveys of the distribution of Ti$^+$ to larger distances from the
plane of the Galaxy than sampled previously, allowing the scale height of
titanium to be d... | 1994-10-24 | 2009-10-22 | [
"astro-ph"
] | Keith Lipman (IoA, Cambridge) and Max Pettini (RGO, Cambridge) |
astro-ph/9410077 | The Cambridge-Cambridge ROSAT Serendipity Survey - I. X-ray-luminous
galaxies | We report on the first results obtained from a new optical identification
programme of 123 faint X-ray sources with $S$(0.5--2$\,{\rm keV)}>2\times
10^{-14}\,$erg$\,$s$^{-1}\,$cm$^{-2}\,$ serendipitously detected in {\it ROSAT}
PSPC pointed observations. We have spectroscopically identified the optical
counterparts to ... | 1994-10-24 | 2015-06-24 | [
"astro-ph"
] | B.J.Boyle (RGO, Cambridge), R.G.Mcmahon (IoA, Cambridge), B.J.Wilkes
and M.Elvis (CfA) |
astro-ph/9410073 | The Search for Black Holes in X-Ray Binaries: An Update | This paper reviews some of the recent observational results on stellar mass
black hole candidates. Over the last decade, much of the progress in this field
has been achieved through the study of transient X--ray binary sources which
shine only sporadically in the X--ray sky and undergo much larger luminosity
variations... | 1994-10-23 | 2009-09-25 | [
"astro-ph"
] | L. Stella, G.L. Israel, S. Mereghetti and D. Ricci |
astro-ph/9410072 | Nature of Field Galaxies in the (z<0.3) Universe from the CFRS Survey | We present the first detailed spectroscopic study of field galaxies up to
z=0.3 from the I-magnitude limited CFRS sample. In this complete sample, we
find that about half of the objects are blue emission-line galaxies. Using line
ratio diagram and photoionization models, we show that in roughly half of these
emission-l... | 1994-10-21 | 2007-05-23 | [
"astro-ph"
] | L. Tresse, C. Rola, F. Hammer, G. Stasinska |
astro-ph/9410066 | The Power Spectrum of Galaxies in the Nearby Universe | We compute the power spectrum of galaxy density fluctuations in a recently
completed redshift survey of optically-selected galaxies in the southern
hemisphere (SSRS2). The amplitude and shape of the SSRS2 power spectrum are
consistent with results of the Center for Astrophysics redshift survey of the
northern hemispher... | 1994-10-20 | 2009-10-22 | [
"astro-ph"
] | L. N. da Costa, M. S. Vogeley, M. J. Geller, J. P. Huchra, and C. Park |
astro-ph/9410071 | Short times characterisations of stochasticity in nonintegrable galactic
potentials | This paper proposes an alternative characterisation of the degree of
stochasticity exhibited by orbits in a fixed galactic potential. This differs
from earlier work involving Liapounov exponents by focusing on the statistical
properties of ensembles of trajectories, rather than individual orbits, and by
restricting att... | 1994-10-20 | 2011-05-23 | [
"astro-ph",
"chao-dyn",
"nlin.CD"
] | Henry E. Kandrup and M. Elaine Mahon |
astro-ph/9410065 | MeV Tau Neutrino: Astrophysical and Cosmological Constraints and
Mischief | Terrestrial and ``Heavenly'' experiments severely constrain the mass and
lifetime of an MeV tau neutrino. Irrespective of decay mode, for $\tau_\nu \ga
300\sec$ the mass of the tau neutrino must be either approximately $30\MeV$ or
less than $0.4\MeV$ (Majorana), $15\keV$ (Dirac). If the dominant decay mode
includes ele... | 1994-10-20 | 2009-10-22 | [
"astro-ph"
] | Geza Gyuk and Michael S. Turner |
astro-ph/9410069 | In Search of a Source for the 320 Eev Fly's Eye Cosmic Ray | The 320 EeV air shower detected by the Fly's Eye poses an important problem.
Careful analysis of pathlength limitations for the possible particle types due
to cosmic background radiation verifies that the particle very likely traveled
less than 50 Mpc from its source. The best candidates for accelerating
particles to s... | 1994-10-20 | 2009-10-22 | [
"astro-ph"
] | Jerome W. Elbert and Paul Sommers |
astro-ph/9410070 | Comments on the Quasi-Steady-State Cosmology | The Quasi-Steady-State Cosmology as proposed by Hoyle, Burbidge and Narlikar
does not fit the observed facts of the Universe. In particular, it predicts
that 75-90\% of the radio sources in the brightest sample that shows steeper
than Euclidean source counts should be blueshifted. | 1994-10-20 | 2015-06-24 | [
"astro-ph"
] | Edward L. Wright |
astro-ph/9410064 | Kinematical Properties of the Thick Disk of the Galaxy | We try here to find new constraints on thick disk population using samples at
intermediate latitude and North Galactic Pole, which include photometry and
proper motions. The algorithm SEM (Stochastic-Estimation-Maximization; Celeux
\& Deibolt 1986) was used to deconvolve the stellar components up to large
distances abo... | 1994-10-20 | 2007-05-23 | [
"astro-ph"
] | Devendra Ojha |
astro-ph/9410063 | Starving Accretion Disks in the Center of Galaxies: the Examples of Sgr
A* and M31 | The low accretion rate inferred for the GC source Sgr A* requires a distinct
type of accretion disk -- a starving disk. We investigate the structure of this
type of disk within the framework of thin Keplerian disk models taking into
account relativistic effects, detailed opacitiy tables and turbulent heat
transport. It... | 1994-10-20 | 2007-05-23 | [
"astro-ph"
] | H. Falcke and O.M. Heinrich |
astro-ph/9410068 | Constraints on Cosmological Models from Once and Future Redshift Surveys | The power spectrum of density fluctuations measured from galaxy redshift
surveys provides important constraints on models for the formation of
large-scale structure. I present new results for a redshift sample of 15,000
galaxies, and review the limitations of current measurements. To span the
decade of wavelength betwe... | 1994-10-20 | 2007-05-23 | [
"astro-ph"
] | Michael S. Vogeley |
astro-ph/9410067 | Detection of a Cosmic Ray with Measured Energy Well Beyond the Expected
Spectral Cutoff due to Cosmic Microwave Radiation | We report the detection of a 51-joule (320 +/- 90 EeV) cosmic ray by the
Fly's Eye air shower detector in Utah. This is substantially greater than the
energy of any previously reported cosmic ray. A Greisen-Zatsepin-Kuz'min cutoff
of the energy spectrum (due to pion photoproduction energy losses) should occur
below thi... | 1994-10-20 | 2009-10-22 | [
"astro-ph"
] | D. J. Bird et al. (Utah) |
astro-ph/9410056 | Automatic Biases Correction | The key point limits to define the {\it statistical model} describing the
data distribution. Hence, it turns out that the characteristics related to the
so-called. Inverse Tully-Fisher relation and the Direct relation are maximum
likelyhood (ML) estimators of different statistical models, and we obtain
coherent distanc... | 1994-10-19 | 2007-05-23 | [
"astro-ph"
] | R. Triay |
astro-ph/9410062 | Microlensing by Stars | If stars at the lower end of the main sequence are responsible for the
microlensing events observed in the Galactic bulge, then light from the lensing
star contributes to the observed brightness. The background and lensing stars
generally have different colors, and the relative brightness changes during the
microlensin... | 1994-10-19 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | Marc Kamionkowski |
astro-ph/9410061 | The Motions of Clusters and Groups of Galaxies | The distributions of peculiar velocities of rich clusters and of groups of
galaxies are investigated for different cosmological models and are compared
with observations. Four cosmological models are studied: standard ($\Omega=1$)
CDM, low-density ($\Omega=0.3$) CDM, HDM ($\Omega=1$), and PBI ($\Omega=0.3$),
all COBE n... | 1994-10-19 | 2009-10-22 | [
"astro-ph"
] | Neta A. Bahcall, Mirt Gramann and Renyue Cen |
astro-ph/9410059 | Mixed Dark Matter models with a non-thermal hot component: fluctuation
evolution | We calculate the linear evolution for a class of mixed dark matter models,
where the hot component derives from the decay of a heavier particle (CntHDM
models). These models differ from ordinary mixed models based on massive
neutrinos (CHDM models), for which the hot component has a phase space
distribution which deriv... | 1994-10-19 | 2009-09-25 | [
"astro-ph"
] | E.Pierpaoli, S.Bonometto |
astro-ph/9410060 | Big Bang Nucleosynthesis: Consistency Or Crisis ? | The early, hot, dense, expanding Universe was a primordial reactor in which
the light nuclides D, 3He, 4He and 7Li were synthesized in astrophysically
interesting abundances. The challenge to the standard hot big bang model (Big
Bang Nucleosynthesis = BBN) is the comparison between the observed and
predicted abundances... | 1994-10-19 | 2007-05-23 | [
"astro-ph"
] | Gary Steigman |
astro-ph/9410057 | Numerical models and our understanding of aspherical Planetary Nebulae | The status of numerical hydrodynamical models for Planetary Nebulae is
reviewed. Since all of the numerical work is based on the interacting winds
model, we start with a description of this model and give an overview of the
early analytical and numerical models. Subsequently we address the numerical
models which includ... | 1994-10-19 | 2007-05-23 | [
"astro-ph"
] | Garrelt Mellema and Adam Frank |
astro-ph/9410058 | What's The Problem With ^3He? | We consider the galactic evolutionary history of \he3 in models which deplete
deuterium by as much as a factor of 2 to $\sim$ 15 from its primordial value to
its present day observed value in the ISM. We show that when \he3 production in
low mass stars (1 -- 3 $M_\odot$) is included over the history of the galaxy,
\he3... | 1994-10-19 | 2009-09-25 | [
"astro-ph"
] | Keith A. Olive, Robert T. Rood, David N. Schramm, James Truran and
Elisabeth Vangioni-Flam |
astro-ph/9410054 | Using SN Ia Light Curve Shapes to Measure The Hubble Constant | We present an empirical method which uses visual band light curve shapes
(LCS) to estimate the luminosity of type Ia supernovae (SN Ia). This method is
first applied to a ``training set'' of 8 SN Ia light curves with independent
distance estimates to derive the correlation between the LCS and the
luminosity. We employ ... | 1994-10-18 | 2009-10-22 | [
"astro-ph"
] | Adam G. Riess, William H. Press, Robert P. Kirshner |
astro-ph/9410053 | Acoustic and Thermoreactive Instabilities in a Photoionized Multiphase
Medium | We study thermoreactive and acoustic instabilities in a diffuse gas,
photoionized and heated by a radiation field. The analysis of the thermal
instability by Field (1965) is extended to include the effects of the hydrogen
recombination reaction, which, in general, is found to be a stabilizing agent
for the condensation... | 1994-10-18 | 2007-05-23 | [
"astro-ph"
] | A. Ferrara and E. Corbelli |
astro-ph/9410055 | The Interstellar $^7$Li/$^6$Li Ratio | We discuss the observational status of the interstellar lithium isotopic
ratio and its significance with respect to the galactic evolution of lithium. | 1994-10-18 | 2008-02-03 | [
"astro-ph"
] | Martin Lemoine, Roger Ferlet |
astro-ph/9410052 | Statistics Of Microlensing Optical Depth | We show that the statistical error, $\sigma_{\tau}$, in estimating the
optical depth, $\tau$, due to microlensing is substantially higher than the
naive Poisson estimate: $\sigma_{\tau} = \sqrt{\eta / N} \tau$, where $N$ is
the number of detections and $1.65 \leq \eta \lsim 3$. We construct a
``microlensing map'' using... | 1994-10-18 | 2009-10-22 | [
"astro-ph"
] | Cheongho Han and Andrew Gould |
astro-ph/9410049 | CBR Anisotropy from Primordial Gravitational Waves in Two-Component
Inflationary Cosmology | We examine stochastic temperature fluctuations of the cosmic background
radiation (CBR) arising via the Sachs-Wolfe effect from gravitational wave
perturbations produced in the early universe. We consider spatially flat,
perturbed FRW models that begin with an inflationary phase, followed by a mixed
phase containing bo... | 1994-10-17 | 2009-10-22 | [
"astro-ph"
] | Scott Koranda and Bruce Allen |
astro-ph/9410051 | Collapse of a Superhorizon-sized Void in the Early Universe | In this paper, we study the collapse of a superhorizon-sized void in the
early, radiation-dominated universe using an improved general relativistic
code. We find that in general a relativistic or nonrelativistic void collapses
via a shock at the speed of light. This is true even if the outward velocity of
the void wall... | 1994-10-17 | 2009-10-22 | [
"astro-ph",
"gr-qc"
] | Sharon L. Vadas |
astro-ph/9410050 | Companions of Qsos at Redshift 1.1 | We discuss broad- and narrow-band imaging of 7 arcmin fields of 14 QSOs with
redshift ~1.1. The narrow-band filters were chosen to detect redshifted [O II]
3727A, and the broad bands are R and I, which correspond to rest wavelengths
{}~3300A and ~3800A. In 100 arcsec subfields surrounding the QSOs, we detect an
excess ... | 1994-10-17 | 2009-10-22 | [
"astro-ph"
] | J.B. Hutchings, D. Crampton, Andrea Johnson |
astro-ph/9410048 | Is There Evidence for Repeating Gamma Ray Bursters in the BATSE Data? | The possibility that classical gamma ray bursts (GRB) occasionally repeat
from the same locations on the sky provides a critical test of GRB models.
There is currently some controversy about whether there is evidence for burst
repetition in the BATSE data. We introduce a gamma ray burst ``pair matching"
statistic that ... | 1994-10-15 | 2008-02-03 | [
"astro-ph"
] | David P. Bennett and Sun Hong Rhie (CfPA, UC Berkeley, and IGPP, LLNL) |
astro-ph/9410044 | Evidence for the Galactic Bar from the Two Color Photometry of the Bulge
Red Clump Stars | The Optical Gravitational Lensing Experiment (OGLE, Udalski et al.~1994a;
Paczy\'nski et al.~1994b -- these proceedings; and references therein) is an
extensive photometric search for the rare cases of gravitational microlensing
of Galactic bulge stars by foreground objects. It provides a huge data base
(Szyma\'nski \&... | 1994-10-14 | 2007-05-23 | [
"astro-ph"
] | K. Z. Stanek, M. Mateo, A. Udalski, M. Szymanski, J. Kaluzny, M.
Kubiak & W. Krzeminski |
astro-ph/9410043 | Formation and Evolution of Galaxies: Les Houches Lectures | This is a set of lecture notes based on the lectures on the formation and
evolution of galaxies which were given by S. White at Les Houches in August
1993. This postscript file does not contain the 16 figures. A version
containing these figures can be obtained by writing to: Fr. C. Rickl, MPI fuer
Astrophysik, Karl-Sch... | 1994-10-14 | 2009-09-25 | [
"astro-ph"
] | Simon D.M. White |
astro-ph/9410047 | Gravitational Waves from Wobbling Pulsars | The prospects for detection of gravitational waves from precessing pulsars
have been considered by constructing fully relativistic rotating neutron star
models and evaluating the expected wave amplitude $h$ from a galactic source.
For a "typical" neutron matter equation of state and observed rotation rates,
it is shown... | 1994-10-14 | 2016-06-08 | [
"astro-ph"
] | J.C.N.de Ara\'ujo, J.A. de Freitas Pacheco, J.E.Horvath and M.Cattani |
astro-ph/9410045 | Morphology of Galaxy Mergers at Intermediate Redshift | Using a combination of numerical simulation and synthesized Hubble Space
Telescope Wide Field Camera 2 (HST WFC2) images, we follow the detectability of
morphological signatures of disk galaxy mergers at intermediate redshifts z=0.4
and z=1.0. Rapid evolution in the surface brightness of tidal tails makes their
use as ... | 1994-10-14 | 2007-05-23 | [
"astro-ph"
] | Chris Mihos |
astro-ph/9410046 | Combined Stellar Structure and Atmosphere Models: Exploratory Results
for Wolf-Rayet Stars | In this paper we present Complete Stellar models (CoStar) for massive stars,
which treat the stellar interior and atmosphere, including its wind. Particular
emphasis is given to Wolf-Rayet stars. We address the question of the effective
temperatures of WNE and WC stars. Our first results show a satisfactory
agreement b... | 1994-10-14 | 2007-05-23 | [
"astro-ph"
] | D. Schaerer, A. de Koter, and W. Schmutz |
astro-ph/9410042 | V and I Photometry of Bright Giants in the Central Regions of NGC 147 | Deep V and I CCD images with sub-arcsec spatial resolution are used to
investigate the stellar content of the central regions of the Local Group dwarf
elliptical galaxy NGC147. Red giant branch (RGB) stars are resolved over the
entire field, and the RGB-tip occurs at I ~ 20.5, suggesting that the distance
modulus is 24... | 1994-10-13 | 2009-10-22 | [
"astro-ph"
] | T. J. Davidge |
astro-ph/9410040 | The Origin of Intermediate-Redshift Lyman Alpha Absorption Systems | We present initial results of an imaging and spectroscopic survey of faint
galaxies in fields of Hubble Space Telescope spectroscopic target QSOs. The
primary objectives of the survey are (a) to determine the incidence, extent,
and covering factor of extended gaseous envelopes of luminous galaxies and (b)
to determine ... | 1994-10-13 | 2007-05-23 | [
"astro-ph"
] | K.M. Lanzetta, D.V. Bowen, D. Tytler, J.K. Webb and K.M. Sealey |
astro-ph/9410041 | Surveys for Z>1 Field Galaxies; David Crampton | In the course of the comprehensive CFRS redshift survey to I = 22.5 with the
CFHT MOS/SIS spectrograph, we have observed ~25 field galaxies with z > 1.
However, it is clear that almost an equal number, predominantly red galaxies,
have likely been missed largely because of limitations in the observed
wavelength range. T... | 1994-10-13 | 2007-05-23 | [
"astro-ph"
] | C.L. Morbey, O. Le Fevre, F. Hammer, L. Tresse, S. J. Lilly and D.J.
Schade |
astro-ph/9410039 | Stationary Universe Model: Inputs and Outputs | This is the text of a talk given at the Rome Conference "The Birth of the
Universe and Fundemental Physics", May, 1994. We present the recent progress
achieved in collaboration with A.Linde and D.Linde towards understanding the
true nature of the global spatial structure of the universe as well as the most
general stat... | 1994-10-13 | 2009-10-22 | [
"astro-ph",
"gr-qc"
] | Arthur Mezhlumian |
astro-ph/9410037 | Foreground Contributions to 0.2-2 Degree CMB Anisotropies | We examine the extent to which galactic and extragalactic foregrounds can
hamper the detection of primordial Cosmic Microwave Background (CMB)
anisotropies. We limit our discussion to intermediate angular scales,
$10^{\prime}\lsim \theta \lsim 2^{\circ}$, since many current as well as future
experiments have been desig... | 1994-10-12 | 2009-09-25 | [
"astro-ph"
] | L. Toffolatti, et al |
astro-ph/9410036 | Non-thermal Acceleration from Reconnection Shocks | Reconnection shocks in a magnetically dominated plasma must be compressive.
Non-thermal ion acceleration can occur across built-in slow shocks, and across
outflow fast shocks when the outflow is supermagnetosonic and the field is
line-tied. Electron acceleration may be initiated by injection from the
dissipation region... | 1994-10-12 | 2009-10-22 | [
"astro-ph"
] | Eric G. Blackman and George B. Field (Harvard-Smithsonian Center for
Astrophysics) |
astro-ph/9410035 | Deviations from Chemical Equilibrium due to Spin-Down as an Internal
Heat Source in Neutron Stars | The core of a neutron star contains several species of particles, whose
relative equilibrium concentrations are determined by the local density. As the
star spins down, its centrifugal force decreases continuously, and the star
contracts. The density of any given fluid element increases, changing its
chemical equilibri... | 1994-10-12 | 2009-10-22 | [
"astro-ph"
] | Andreas Reisenegger |
astro-ph/9410034 | Galactic Structure and Stellar Populations | Invited review given at special session on Digitizing the Sky at 1994 Summer
AAS meeting, Minnesota. | 1994-10-12 | 2009-10-22 | [
"astro-ph"
] | Rosemary F.G. Wyse |
astro-ph/9410038 | A Solvable Model for Anharmonic Evolution of Cosmic Axion Overdensitites | We present analytic solutions to the spatially homogeneous axion field
equation, using a model potential which strongly resembles the $(1-\cos
\theta)$ standard anharmonic potential. We find that the anharmonicity
amplifies early universe axion density fluctuations, but only significantly so
for relatively large initia... | 1994-10-12 | 2009-09-25 | [
"astro-ph",
"hep-ph"
] | Karl Strobl and Thomas J. Weiler |
astro-ph/9410032 | Cosmic Strings in an Open Universe with Baryonic and Non-Baryonic Dark
Matter | We study the effects of cosmic strings on structure formation in open
universes. We calculate the power spectrum of density perturbations for two
class of models: one in which all the dark matter is non baryonic (CDM) and one
in which it is all baryonic (BDM). Our results are compared to the 1 in 6 IRAS
QDOT power spec... | 1994-10-11 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | Pedro Ferreira |
astro-ph/9410033 | The Extragalactic IR Background | Current limits on the intensity of the extragalactic infrared background are
consistent with the expected contribution from evolving galaxies. Depending on
the behaviour of the star formation rate and of the initial mass function, we
can expect that dust extinction during early evolutionary phases ranges from
moderate ... | 1994-10-11 | 2009-10-22 | [
"astro-ph"
] | G. De Zotti, A. Franceschini, P. Mazzei, L. Toffolatti, and L. Danese |
astro-ph/9410031 | On the Influence of Supernova Remnant Thermal Energy in Powering
Galactic Winds | The fundamental tenet of the classical supernovae-driven wind model of
elliptical galaxies is that the residual thermal energy of all supernovae
remnants (SNRs) provide sufficient energy to overcome the binding energy of the
remaining interstellar gas, thereby driving a global galactic wind. We
re-examine model predict... | 1994-10-11 | 2007-05-23 | [
"astro-ph"
] | Brad K. Gibson |
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