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we describe the pycbc search for gravitational waves from compact-object binary coalescences in advanced gravitational-wave detector data. the search was used in the first advanced laser interferometer gravitational-wave observatory (ligo) observing run and unambiguously identified two black hole binary mergers, gw1509... | the pycbc search for gravitational waves from compact binary coalescence |
we present the second public data release of the dark energy survey, des dr2, based on optical/near-infrared imaging by the dark energy camera mounted on the 4 m blanco telescope at cerro tololo inter-american observatory in chile. des dr2 consists of reduced single-epoch and coadded images, a source catalog derived fr... | the dark energy survey data release 2 |
determining the properties of old stellar populations (those with age >1 gyr) has long involved the comparison of their integrated light, either in the form of photometry or spectroscopic indexes, with empirical or synthetic templates. here we re-evaluate the properties of old stellar populations using a new set of ... | re-evaluating old stellar populations |
precise and accurate parameters for late-type (late k and m) dwarf stars are important for characterization of any orbiting planets, but such determinations have been hampered by these stars’ complex spectra and dissimilarity to the sun. we exploit an empirically calibrated method to estimate spectroscopic effective te... | how to constrain your m dwarf: measuring effective temperature, bolometric luminosity, mass, and radius |
the transiting exoplanet survey satellite (tess) is the first high-precision full-sky photometric survey in space. we extracted light curves from a magnitude limited set of stars and other stationary luminous objects from the tess full frame images using the mit quick look pipeline. here, we describe the techniques use... | photometry of 10 million stars from the first two years of tess full frame images: part i |
using 25 years of data from uninterrupted monitoring of stellar orbits in the galactic center, we present an update of the main results from this unique data set: a measurement of mass and distance to sgr a*. our progress is not only due to the eight-year increase in time base, but also to the improved definition of th... | an update on monitoring stellar orbits in the galactic center |
we study the dust attenuation curves of 230,000 individual galaxies in the local universe, ranging from quiescent to intensely star-forming systems, using galex, sdss, and wise photometry calibrated on the herschel atlas. we use a new method of constraining sed fits with infrared luminosity (sed+lir fitting), and param... | dust attenuation curves in the local universe: demographics and new laws for star-forming galaxies and high-redshift analogs |
we present the phangs-muse survey, a programme that uses the muse integral field spectrograph at the eso vlt to map 19 massive (9.4 < log(m⋆/m⊙)< 11.0) nearby (d ≲ 20 mpc) star-forming disc galaxies. the survey consists of 168 muse pointings (1' by 1' each) and a total of nearly 15 × 106 spectra, covering ∼1.5 × ... | the phangs-muse survey. probing the chemo-dynamical evolution of disc galaxies |
the detection of the accelerated expansion of the universe has been one of the major breakthroughs in modern cosmology. several cosmological probes (cosmic microwave background, supernovae type ia, baryon acoustic oscillations) have been studied in depth to better understand the nature of the mechanism driving this acc... | unveiling the universe with emerging cosmological probes |
we review observations of ultraluminous x-ray sources (ulxs). x-ray spectroscopic and timing studies of ulxs suggest a new accretion state distinct from those seen in galactic stellar-mass black hole binaries. the detection of coherent pulsations indicates the presence of neutron-star accretors in three ulxs and theref... | ultraluminous x-ray sources |
we report the discovery of eight new milky way companions in ∼ 1800 {{deg}}2 of optical imaging data collected during the first year of the dark energy survey (des). each system is identified as a statistically significant over-density of individual stars consistent with the expected isochrone and luminosity function o... | eight new milky way companions discovered in first-year dark energy survey data |
the recent discovery of gw150914, the binary black hole merger detected by advanced ligo, has the potential to revolutionize observational astrophysics. but to fully utilize this new window into the universe, we must compare these new observations to detailed models of binary black hole formation throughout cosmic time... | binary black hole mergers from globular clusters: masses, merger rates, and the impact of stellar evolution |
we investigate the evolution of galaxy gas-phase metallicity (o/h) over the range z = 0-3.3 using samples of ~300 galaxies at z ~ 2.3 and ~150 galaxies at z ~ 3.3 from the mosdef survey. this analysis crucially utilizes different metallicity calibrations at z ~ 0 and z > 1 to account for evolving interstellar medium... | the mosdef survey: the evolution of the mass-metallicity relation from z = 0 to z 3.3 |
yearslong time series of high-precision brightness measurements have been assembled for thousands of stars with telescopes operating in space. such data have allowed astronomers to measure the physics of stellar interiors via nonradial oscillations, opening a new avenue to study the stars in the universe. asteroseismol... | probing the interior physics of stars through asteroseismology |
gravitational-wave detections provide a novel way to determine the hubble constant1-3, which is the current rate of expansion of the universe. this `standard siren' method, with the absolute distance calibration provided by the general theory of relativity, was used to measure the hubble constant using the gravitationa... | a two per cent hubble constant measurement from standard sirens within five years |
information security and authentication are important challenges facing society. recent attacks by hackers on the databases of large commercial and financial companies have demonstrated that more research and development of advanced approaches are necessary to deny unauthorized access to critical data. free space optic... | roadmap on optical security |
we use the age-metallicity distribution of 96 galactic globular clusters (gcs) to infer the formation and assembly history of the milky way (mw), culminating in the reconstruction of its merger tree. based on a quantitative comparison of the galactic gc population to the 25 cosmological zoom-in simulations of mw-mass g... | the formation and assembly history of the milky way revealed by its globular cluster population |
accretion through circumstellar disks plays an important role in star formation and in establishing the properties of the regions in which planets form and migrate. the mechanisms by which protostellar and protoplanetary disks accrete onto low-mass stars are not clear; angular momentum transport by magnetic fields is t... | accretion onto pre-main-sequence stars |
the first jwst spectroscopy of the luminous galaxy gn-z11 simultaneously both established its redshift at $z=10.6$ and revealed a rest-ultraviolet spectrum dominated by signatures of highly-ionized nitrogen, which has so far defied clear interpretation. here we present a reappraisal of this spectrum in the context of b... | gn-z11 in context: possible signatures of globular cluster precursors at redshift 10 |
this review examines the state-of-the-art knowledge of high-mass star and massive cluster formation, gained from ambitious observational surveys, which acknowledges the multiscale characteristics of these processes. after a brief overview of theoretical models and main open issues, we present observational searches for... | high-mass star and massive cluster formation in the milky way |
rayleigh's criterion for resolving two incoherent point sources has been the most influential measure of optical imaging resolution for over a century. in the context of statistical image processing, violation of the criterion is especially detrimental to the estimation of the separation between the sources, and modern... | quantum theory of superresolution for two incoherent optical point sources |
we have constructed merger trees for galaxies in the illustris simulation by directly tracking the baryonic content of subhaloes. these merger trees are used to calculate the galaxy-galaxy merger rate as a function of descendant stellar mass, progenitor stellar mass ratio, and redshift. we demonstrate that the most app... | the merger rate of galaxies in the illustris simulation: a comparison with observations and semi-empirical models |
we have updated the munich galaxy formation model to the planck first-year cosmology, while modifying the treatment of baryonic processes to reproduce recent data on the abundance and passive fractions of galaxies from z = 3 down to z = 0. matching these more extensive and more precise observational results requires us... | galaxy formation in the planck cosmology - i. matching the observed evolution of star formation rates, colours and stellar masses |
using a sample of 69,919 red giants from the sdss-iii/apogee data release 12, we measure the distribution of stars in the [α/fe] versus [fe/h] plane and the metallicity distribution functions (mdfs) across an unprecedented volume of the milky way disk, with radius 3 < r < 15 kpc and height | z| \lt 2 kpc. stars i... | chemical cartography with apogee: metallicity distribution functions and the chemical structure of the milky way disk |
we determine the milky way (mw) mass profile inferred from fitting physically motivated models to the gaia dr2 galactic rotation curve and other data. using various hydrodynamical simulations of mw-mass haloes, we show that the presence of baryons induces a contraction of the dark matter (dm) distribution in the inner ... | the milky way total mass profile as inferred from gaia dr2 |
context. the astrophysical characterisation of sources is among the major new data products in the third gaia data release (dr3). in particular, there are stellar parameters for 471 million sources estimated from low-resolution bp/rp spectra.aims: we present the general stellar parameterizer from photometry (gsp-phot),... | gaia data release 3. analysis of the gaia bp/rp spectra using the general stellar parameterizer from photometry |
this is an exciting time for the study of r-process nucleosynthesis. recently, a neutron star merger gw170817 was observed in extraordinary detail with gravitational waves and electromagnetic radiation from radio to γ rays. the very red color of the associated kilonova suggests that neutron star mergers are an importan... | r-process nucleosynthesis: connecting rare-isotope beam facilities with the cosmos |
the spin of a black hole is an important quantity to study, providing a window into the processes by which a black hole was born and grew. furthermore, spin can be a potent energy source for powering relativistic jets and energetic particle acceleration. in this review, i describe the techniques currently used to detec... | observational constraints on black hole spin |
in this study, we use simple performance metrics to assess the science capabilities of future ground-based gravitational-wave detector networks -- composed of a+ or voyager upgrades to the ligo, virgo, and kagra observatories and proposed next generation observatories such as cosmic explorer and einstein telescope. the... | listening to the universe with next generation ground-based gravitational-wave detectors |
the distribution of dark matter halo masses can be accurately predicted in the lambda cold dark matter (λcdm) cosmology. the presence of a single massive halo or galaxy at a particular redshift, assuming some baryon and stellar fraction for the latter, can therefore be used to test the underlying cosmological model. a ... | extreme value statistics of the halo and stellar mass distributions at high redshift: are jwst results in tension with λcdm? |
context. the interaction of the light from astronomical objects with the constituents of the earth's atmosphere leads to the formation of telluric absorption lines in ground-based collected spectra. correcting for these lines, mostly affecting the red and infrared region of the spectrum, usually relies on observations ... | molecfit: a general tool for telluric absorption correction. i. method and application to eso instruments |
using three-dimensional simulations, we study the dynamics and final structure of merging solitonic cores predicted to form in ultralight axion dark matter halos. the classical, newtonian equations of motion of a self-gravitating scalar field are described by the schrödinger-poisson equations. we investigate mergers of... | simulations of solitonic core mergers in ultralight axion dark matter cosmologies |
we present a new generation of substellar atmosphere and evolution models, appropriate for application to studies of l-, t-, and y-type brown dwarfs and self-luminous extrasolar planets. the models describe the expected temperature-pressure profiles and emergent spectra of atmospheres in radiative-convective equilibriu... | the sonora brown dwarf atmosphere and evolution models. i. model description and application to cloudless atmospheres in rainout chemical equilibrium |
tianqin is a planned space-based gravitational wave (gw) observatory consisting of three earth-orbiting satellites with an orbital radius of about $10^5 \, {\rm km}$. the satellites will form an equilateral triangle constellation the plane of which is nearly perpendicular to the ecliptic plane. tianqin aims to detect g... | the tianqin project: current progress on science and technology |
context. feedback from accreting supermassive black holes (smbhs) is often identified as the main mechanism responsible for regulating star formation in active galactic nucleus (agn) host galaxies. however, the relationships between agn activity, radiation, winds, and star formation are complex and still far from being... | agn wind scaling relations and the co-evolution of black holes and galaxies |
context. the census of stellar and substellar companions of nearby stars is largely incomplete, in particular toward the low-mass brown dwarf and long-period exoplanets. it is, however, fundamentally important in the understanding of the stellar and planetary formation and evolution mechanisms. nearby stars are particu... | stellar and substellar companions of nearby stars from gaia dr2. binarity from proper motion anomaly |
merging binaries of neutron-stars are not only strong sources of gravitational waves, but also have the potential of revealing states of matter at densities and temperatures not accessible in laboratories. a crucial and long-standing question in this context is whether quarks are deconfined as a result of the dramatic ... | signatures of quark-hadron phase transitions in general-relativistic neutron-star mergers |
simple generic extensions of isotropic durgapal-fuloria stars to the anisotropic domain are presented. these anisotropic solutions are obtained by guided minimal deformations over the isotropic system. when the anisotropic sector interacts in a purely gravitational manner, the conditions to decouple both sectors by mea... | gravitational decoupled anisotropies in compact stars |
scaling relations between central black hole (bh) mass and host galaxy properties are of fundamental importance to studies of bh and galaxy evolution throughout cosmic time. here we investigate the relationship between bh mass and host galaxy total stellar mass using a sample of 262 broad-line active galactic nuclei (a... | relations between central black hole mass and total galaxy stellar mass in the local universe |
we present a blind time-delay strong lensing (tdsl) cosmographic analysis of the doubly imaged quasar sdss 1206+4332 . we combine the relative time delay between the quasar images, hubble space telescope imaging, the keck stellar velocity dispersion of the lensing galaxy, and wide-field photometric and spectroscopic da... | h0licow - ix. cosmographic analysis of the doubly imaged quasar sdss 1206+4332 and a new measurement of the hubble constant |
accurate knowledge of the thermodynamic properties of zero-temperature, high-density quark matter plays an integral role in attempts to constrain the behavior of the dense qcd matter found inside neutron-star cores, irrespective of the phase realized inside the stars. in this letter, we consider the weak-coupling expan... | soft interactions in cold quark matter |
we present a catalogue of white dwarf candidates selected from gaia early data release 3 (edr3). we applied several selection criteria in absolute magnitude, colour, and gaia quality flags to remove objects with unreliable measurements while preserving most stars compatible with the white dwarf locus in the hertzsprung... | a catalogue of white dwarfs in gaia edr3 |
a precise interstellar dust extinction law is critically important to interpret observations. there are two indicators of extinction: the color excess ratio (cer) and the relative extinction. compared to the cer, the wavelength-dependent relative extinction is more challenging to be determined. in this work, we combine... | the optical to mid-infrared extinction law based on the apogee, gaia dr2, pan-starrs1, sdss, apass, 2mass, and wise surveys |
we present a catalogue of 362 million stellar parameters, distances, and extinctions derived from gaia's early data release (edr3) cross-matched with the photometric catalogues of pan-starrs1, skymapper, 2mass, and allwise. the higher precision of the gaia edr3 data, combined with the broad wavelength coverage of the a... | photo-astrometric distances, extinctions, and astrophysical parameters for gaia edr3 stars brighter than g = 18.5 |
we present long baseline atacama large millimeter/submillimeter array (alma) observations of the 870 μm continuum emission from the nearest gas-rich protoplanetary disk, around tw hya, that trace millimeter-sized particles down to spatial scales as small as 1 au (20 mas). these data reveal a series of concentric ring-s... | ringed substructure and a gap at 1 au in the nearest protoplanetary disk |
we study the properties of black holes and their host galaxies across cosmic time in the illustris simulation. illustris is a large-scale cosmological hydrodynamical simulation which resolves a (106.5 mpc)3 volume with more than 12 billion resolution elements and includes state-of-the-art physical models relevant for g... | the illustris simulation: the evolving population of black holes across cosmic time |
with recent advances in gravitational-wave astronomy, the direct detection of gravitational waves from the merger of two stellar-mass compact objects has become a realistic prospect. evolutionary scenarios towards mergers of various double compact objects generally invoke so-called common-envelope evolution, which is p... | a new route towards merging massive black holes |
the mapping nearby galaxies at apache point observatory (manga) survey is currently acquiring integral-field spectroscopy for the largest sample of galaxies to date. by 2020, the manga survey—which is one of three core programs in the fourth-generation sloan digital sky survey (sdss-iv)—will have observed a statistical... | the data analysis pipeline for the sdss-iv manga ifu galaxy survey: overview |
we perform radiation-hydrodynamics simulations of binary neutron-star mergers in numerical relativity on the japanese "k" supercomputer, taking into account neutrino cooling and heating by an updated leakage-plus-transfer scheme for the first time. neutron stars are modeled by three modern finite-temperature equations ... | dynamical mass ejection from binary neutron star mergers: radiation-hydrodynamics study in general relativity |
with the improving sensitivity of the global network of gravitational-wave detectors, we expect to observe hundreds of transient gravitational-wave events per year. the current methods used to estimate their source parameters employ optimally sensitive but computationally costly bayesian inference approaches, where typ... | bayesian parameter estimation using conditional variational autoencoders for gravitational-wave astronomy |
the sphere infrared exoplanet (shine) project is a 500-star survey performed with sphere on the very large telescope for the purpose of directly detecting new substellar companions and understanding their formation and early evolution. here we present an initial statistical analysis for a subsample of 150 stars spannin... | the sphere infrared survey for exoplanets (shine). iii. the demographics of young giant exoplanets below 300 au with sphere |
our understanding of the properties and demographics of exoplanets critically relies on our ability to determine the fundamental properties of their host stars. the advent of gaia and large spectroscopic surveys has now made it possible, in principle, to infer the properties of individual stars, including most exoplane... | a guide to realistic uncertainties on the fundamental properties of solar-type exoplanet host stars |
we introduce the thesan project, a suite of large volume ($l_\mathrm{box} = 95.5 \, \mathrm{cmpc}$) radiation-magnetohydrodynamic simulations that simultaneously model the large-scale statistical properties of the intergalactic medium during reionization and the resolved characteristics of the galaxies responsible for ... | introducing the thesan project: radiation-magnetohydrodynamic simulations of the epoch of reionization |
we review the current knowledge about nuclear star clusters (nscs), and the spectacularly dense and massive assemblies of stars found at the centers of most galaxies. recent observational and theoretical works suggest that many nsc properties, including their masses, densities, and stellar populations, vary with the pr... | nuclear star clusters |
tools from scattering amplitudes and effective field theory have recently been repurposed to derive state-of-the-art results for the black hole binary inspiral in the post-minkowskian expansion. in the present letter, we extend this approach to include the tidal effects of mass and current quadrupoles on the conservati... | tidal effects in the post-minkowskian expansion |
we use chemistry ([alpha/fe] and [fe/h]), main sequence turnoff ages, and kinematics determined from h3 survey spectroscopy and gaia astrometry to identify the birth of the galactic disk. we separate in-situ and accreted stars on the basis of angular momenta and eccentricities. the sequence of high-alpha in-situ stars ... | birth of the galactic disk revealed by the h3 survey |
this paper describes the identification, modelling, and removal of previously unexplained systematic effects in the polarization data of the planck high frequency instrument (hfi) on large angular scales, including new mapmaking and calibration procedures, new and more complete end-to-end simulations, and a set of robu... | planck intermediate results. xlvi. reduction of large-scale systematic effects in hfi polarization maps and estimation of the reionization optical depth |
we present version 10 of the chianti package. in this release, we provide updated atomic models for several helium-like ions and for all the ions of the beryllium, carbon, and magnesium isoelectronic sequences that are abundant in astrophysical plasmas. we include rates from large-scale atomic structure and scattering ... | chianti—an atomic database for emission lines. xvi. version 10, further extensions |
data release 5 (dr5) of the radial velocity experiment (rave) is the fifth data release from a magnitude-limited (9< i< 12) survey of stars randomly selected in the southern hemisphere. the rave medium-resolution spectra (r∼ 7500) covering the ca-triplet region (8410-8795 å) span the complete time frame from the ... | the radial velocity experiment (rave): fifth data release |
we confront observational data from gravitational wave event gw170817 with microscopic modeling of the cold neutron star equation of state. we develop and employ a bayesian statistical framework that enables us to implement constraints on the equation of state from laboratory measurements of nuclei and state-of-the-art... | neutron star tidal deformabilities constrained by nuclear theory and experiment |
planets form and obtain their compositions in dust- and gas-rich disks around young stars, and the outcome of this process is intimately linked to the disk chemical properties. the distributions of molecules across disks regulate the elemental compositions of planets, including c/n/o/s ratios and metallicity (o/h and c... | molecules with alma at planet-forming scales (maps). i. program overview and highlights |
the rapid neutron capture process (r process) is believed to be responsible for about half of the production of the elements heavier than iron and contributes to abundances of some lighter nuclides as well. a universal pattern of r-process element abundances is observed in some metal-poor stars of the galactic halo. th... | current status of r-process nucleosynthesis |
we discuss in detail the distributions of energy, radial pressure and tangential pressure inside the nucleon. in particular, this discussion is carried on in both the instant form and the front form of dynamics. moreover we show for the first time how these mechanical concepts can be defined when the average nucleon mo... | revisiting the mechanical properties of the nucleon |
we combine molecular gas masses inferred from co emission in 500 star-forming galaxies (sfgs) between z = 0 and 3, from the iram-coldgass, phibss1/2, and other surveys, with gas masses derived from herschel far-ir dust measurements in 512 galaxy stacks over the same stellar mass/redshift range. we constrain the scaling... | combined co and dust scaling relations of depletion time and molecular gas fractions with cosmic time, specific star-formation rate, and stellar mass |
we present a cross-calibration of hipparcos and gaia edr3 intended to identify astrometrically accelerating stars and to fit orbits to stars with faint, massive companions. the resulting catalog, the edr3 edition of the hipparcos-gaia catalog of accelerations (hgca), provides three proper motions with calibrated uncert... | the hipparcos-gaia catalog of accelerations: gaia edr3 edition |
we study relation between stellar mass and halo mass for high-mass halos using a sample of galaxy clusters with accurate measurements of stellar masses from optical and ifrared data and total masses from x-ray observations. we find that stellar mass of the brightest cluster galaxies (bcgs) scales as m *,bcg ∝ m 500αbcg... | stellar mass—halo mass relation and star formation efficiency in high-mass halos |
we present phantom, a fast, parallel, modular, and low-memory smoothed particle hydrodynamics and magnetohydrodynamics code developed over the last decade for astrophysical applications in three dimensions. the code has been developed with a focus on stellar, galactic, planetary, and high energy astrophysics, and has a... | phantom: a smoothed particle hydrodynamics and magnetohydrodynamics code for astrophysics |
extracting the unique information on ultradense nuclear matter from the gravitational waves emitted by merging neutron-star binaries requires robust theoretical models of the signal. we develop a novel effective-one-body waveform model that includes, for the first time, dynamic (instead of only adiabatic) tides of the ... | effects of neutron-star dynamic tides on gravitational waveforms within the effective-one-body approach |
the universe's biggest galaxies have both vast atmospheres and supermassive central black holes. this article reviews how those two components of a large galaxy couple and regulate the galaxy's star formation rate. models of interactions between a supermassive black hole and the large-scale atmosphere suggest that the ... | baryon cycles in the biggest galaxies |
we have derived luminosity functions and set constraints on the uv luminosity and sfr density from z ~ 17 to z ~ 8, using the three most-studied jwst/nircam data sets, the smacs0723, glass parallel, and ceers fields. we first used our own selections on two independent reductions of these data sets using the latest cali... | uv luminosity density results at z > 8 from the first jwst/nircam fields: limitations of early data sets and the need for spectroscopy |
we present the first simulations of core-collapse supernovae in axial symmetry with feedback from fast neutrino flavor conversion (ffc). our schematic treatment of ffcs assumes instantaneous flavor equilibration under the constraint of lepton-number conservation individually for each flavor. systematically varying the ... | fast neutrino flavor conversions can help and hinder neutrino-driven explosions |
we present the full public release of all data from the illustris simulation project. illustris is a suite of large volume, cosmological hydrodynamical simulations run with the moving-mesh code arepo and including a comprehensive set of physical models critical for following the formation and evolution of galaxies acro... | the illustris simulation: public data release |
as low- and intermediate-mass stars reach the asymptotic giant branch (agb), they have developed into intriguing and complex objects that are major players in the cosmic gas/dust cycle. at this stage, their appearance and evolution are strongly affected by a range of dynamical processes. large-scale convective flows br... | mass loss of stars on the asymptotic giant branch. mechanisms, models and measurements |
the planetary and lunar ephemerides called de440 and de441 have been generated by fitting numerically integrated orbits to ground-based and space-based observations. compared to the previous general-purpose ephemerides de430, seven years of new data have been added to compute de440 and de441, with improved dynamical mo... | the jpl planetary and lunar ephemerides de440 and de441 |
we present emerge, an empirical model for the formation of galaxies, describing the evolution of individual galaxies in large volumes from z ∼ 10 to the present day. we assign a star formation rate to each dark matter halo based on its growth rate, which specifies how much baryonic material becomes available, and the i... | emerge - an empirical model for the formation of galaxies since z ∼ 10 |
observations of neutron stars, whether in binaries or in isolation, provide information about the internal structure of the most extreme material objects in the universe. in this work, we combine information from recent observations to place joint constraints on the properties of neutron star matter. we use (i) lower l... | nonparametric constraints on neutron star matter with existing and upcoming gravitational wave and pulsar observations |
there is compelling evidence that the most massive galaxies in the universe stopped forming stars due to the time-integrated feedback from their central super-massive black holes (smbhs). however, the exact quenching mechanism is not yet understood, because local massive galaxies were quenched billions of years ago. we... | a fast-rotator post-starburst galaxy quenched by supermassive black-hole feedback at z=3 |
gaia stellar measurements are currently revolutionizing our knowledge of the evolutionary history of the milky way. 3d maps of the interstellar dust provide complementary information and are a tool for a wide range of uses. we built 3d maps of the dust in the local arm and surrounding regions. to do so, gaia dr2 photom... | gaia-2mass 3d maps of galactic interstellar dust within 3 kpc |
a comprehensive and detailed account of the physics of gravitational waves and their role in astrophysics and cosmology. the part on astrophysical sources of gravitational waves includes chapters on gws from supernovae, neutron stars (neutron star normal modes, cfs instability, r-modes), black-hole perturbation theory ... | gravitational waves: volume 2: astrophysics and cosmology |
measuring the abundances of carbon and oxygen in exoplanet atmospheres is considered a crucial avenue for unlocking the formation and evolution of exoplanetary systems1,2. access to the chemical inventory of an exoplanet requires high-precision observations, often inferred from individual molecular detections with low-... | early release science of the exoplanet wasp-39b with jwst nirspec g395h |
we analyse the ligo-virgo data, including the recently released gwtc-2dataset, to test a hypothesis that the data contains more than one population of black holes. we perform a maximum likelihood analysis including a population of astrophysical black holes with a truncated power-law mass function whose merger rate foll... | two populations of ligo-virgo black holes |
we review all the models proposed for the progenitor systems of type ia supernovae and discuss the strengths and weaknesses of each scenario when confronted with observations. we show that all scenarios encounter at least a few serious difficulties, if taken to represent a comprehensive model for the progenitors of all... | on the progenitors of type ia supernovae |
we present the public data release of halo and galaxy catalogues extracted from the eagle suite of cosmological hydrodynamical simulations of galaxy formation. these simulations were performed with an enhanced version of the gadget code that includes a modified hydrodynamics solver, time-step limiter and subgrid treatm... | the eagle simulations of galaxy formation: public release of halo and galaxy catalogues |
the galaxy and mass assembly (gama) survey is one of the largest contemporary spectroscopic surveys of low redshift galaxies. covering an area of ∼286 deg2 (split among five survey regions) down to a limiting magnitude of r < 19.8 mag, we have collected spectra and reliable redshifts for 238 000 objects using the aa... | galaxy and mass assembly (gama): end of survey report and data release 2 |
the ligo scientific collaboration and the virgo collaboration have cataloged eleven confidently detected gravitational-wave events during the first two observing runs of the advanced detector era. all eleven events were consistent with being from well-modeled mergers between compact stellar-mass objects: black holes or... | a guide to ligo-virgo detector noise and extraction of transient gravitational-wave signals |
despite their long history and astrophysical importance, some of the key properties of neutron stars are still uncertain. the extreme conditions encountered in their interiors, involving matter of uncertain composition at extreme density and isospin asymmetry, uniquely determine the stars' macroscopic properties within... | neutron-star tidal deformability and equation-of-state constraints |
we present a catalog of 4195 optically confirmed sunyaev-zel’dovich (sz) selected galaxy clusters detected with signal-to-noise ratio >4 in 13,211 deg2 of sky surveyed by the atacama cosmology telescope (act). cluster candidates were selected by applying a multifrequency matched filter to 98 and 150 ghz maps constru... | the atacama cosmology telescope: a catalog of >4000 sunyaev-zel’dovich galaxy clusters |
we review the present status of the experimental and theoretical developments in the field of strangeness in nuclei and neutron stars. we start by discussing the k ¯ n interaction, that is governed by the presence of the λ(1405) . we continue by showing the two-pole nature of the λ(1405) , and the production mechanisms... | strangeness in nuclei and neutron stars |
the power-law slope of the rest-uv continuum ($f_{\lambda}\propto\lambda^{\beta}$) is a key metric of early star forming galaxies, providing one of our only windows into the stellar populations and physical conditions of $z>10$ galaxies. expanding upon previous studies with limited sample sizes, we leverage deep ima... | the uv continuum slopes of early star-forming galaxies in jades |
astrophysical black holes are expected to be described by the kerr metric. this is the only stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies einstein's equations and does not have pathologies outside of the event horizon. we present new constraints on potential deviations from the... | first sagittarius a* event horizon telescope results. vi: testing the black hole metric |
the central engine that powers gamma-ray bursts (grbs), the most powerful explosions in the universe, is still not identified. besides hyper-accreting black holes, rapidly spinning and highly magnetized neutron stars, known as millisecond magnetars, have been suggested to power both long and short grbs. the presence of... | magnetar emergence in a peculiar gamma-ray burst from a compact star merger |
we study the population of supermassive black holes (smbhs) and their effects on massive central galaxies in the illustristng cosmological hydrodynamical simulations of galaxy formation. the employed model for smbh growth and feedback assumes a two-mode scenario in which the feedback from active galactic nuclei occurs ... | supermassive black holes and their feedback effects in the illustristng simulation |
stellar standard candles provide the absolute calibration for measuring the universe's local expansion rate, h0, which differs by ~8% from the value inferred using the cosmic microwave background assuming the concordance cosmological model, lambdacdm. this hubble tension indicates a need for important revisions of fund... | reconciling astronomical distance scales with variable red giant stars |
the evolution of star-forming regions and their thermal balance are strongly influenced by their chemical composition, that, in turn, is determined by the physico-chemical processes that govern the transition between the gas phase and the solid state, specifically icy dust grains (e.g., particles adsorption and desorpt... | thermal desorption of interstellar ices: a review on the controlling parameters and their implications from snowlines to chemical complexity |
the extreme astrophysical processes and conditions that characterize the early universe are expected to result in young galaxies that are dynamically different from those observed today1-5. this is because the strong effects associated with galaxy mergers and supernova explosions would lead to most young star-forming g... | a dynamically cold disk galaxy in the early universe |
neutron stars provide a window into the properties of dense nuclear matter. several recent observational and theoretical developments provide powerful constraints on their structure and internal composition. among these are the first observed binary neutron star merger, gw170817, whose gravitational radiation was accom... | neutron stars and the nuclear matter equation of state |
we present the kepler object of interest (koi) catalog of transiting exoplanets based on searching 4 yr of kepler time series photometry (data release 25, q1-q17). the catalog contains 8054 kois, of which 4034 are planet candidates with periods between 0.25 and 632 days. of these candidates, 219 are new, including two ... | planetary candidates observed by kepler. viii. a fully automated catalog with measured completeness and reliability based on data release 25 |
we exhibit an initial-value formulation of the worldline quantum field theory (wqft) approach to the classical two-body problem in general relativity. we show that the schwinger-keldysh (in-in) formalism leads to purely retarded propagators in the evaluation of observables in the wqft. integration technology for retard... | all things retarded: radiation-reaction in worldline quantum field theory |
we present optical and ultraviolet spectra of the first electromagnetic counterpart to a gravitational-wave (gw) source, the binary neutron star merger gw170817. spectra were obtained nightly between 1.5 and 9.5 days post-merger, using the southern astrophysical research and magellan telescopes; the uv spectrum was obt... | the electromagnetic counterpart of the binary neutron star merger ligo/virgo gw170817. iii. optical and uv spectra of a blue kilonova from fast polar ejecta |
advanced ligo-virgo have reported a short gravitational-wave signal (gw190521) interpreted as a quasicircular merger of black holes, one at least populating the pair-instability supernova gap, that formed a remnant black hole of mf∼142 m⊙ at a luminosity distance of dl∼5.3 gpc . with barely visible pre-merger emission,... | gw190521 as a merger of proca stars: a potential new vector boson of 8.7 ×10-13 ev |
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