text stringlengths 89 2.49k | category stringclasses 19
values |
|---|---|
Thermal Instability with Anisotropic Thermal Conduction and Adiabatic
Cosmic Rays: Implications for Cold Filaments in Galaxy Clusters: Observations of the cores of nearby galaxy clusters show H$\alpha$ and
molecular emission line filaments. We argue that these are the result of {\em
local} thermal instability in a {\... | astro-ph_GA |
Confirmation of Enhanced Long Wavelength Dust Emission in OMC 2/3: Previous continuum observations from the MUSTANG camera on the Green Bank
Telescope (GBT) of the nearby star-forming filament OMC 2/3 found elevated
emission at 3.3 mm relative to shorter wavelength data. As a consequence, the
inferred dust emissivity i... | astro-ph_GA |
Probing the interplay between jets, winds and multi-phase gas in 11
radio-quiet PG Quasars: A uGMRT-VLA study: We present polarization-sensitive images from the Karl G. Jansky Very Large
Array (VLA) at 5 GHz of 11 radio-quiet PG quasars. Based on the radio
morphology, spectral index and polarization properties from t... | astro-ph_GA |
Hubble-COS Observations of Galactic High-Velocity Clouds: Four AGN Sight
Lines through Complex C: We report ultraviolet spectra of Galactic high-velocity clouds (HVCs) in
Complex C, taken by the Cosmic Origins Spectrograph (COS) on the Hubble Space
Telescope (HST), together with new 21-cm spectra from the Green Bank ... | astro-ph_GA |
Modeling Star Formation as a Markov Process in a Supersonic
Gravoturbulent Medium: Molecular clouds exhibit lognormal probability density functions (PDF) of
mass densities, which are thought to arise as a consequence of isothermal,
supersonic turbulence. Star formation is then widely assumed to occur in
perturbations... | astro-ph_GA |
Constraining stellar population parameters from narrow band photometric
surveys using convolutional neural networks: Upcoming large-area narrow band photometric surveys, such as J-PAS, will
enable us to observe a large number of galaxies simultaneously and efficiently.
However, it will be challenging to analyse the s... | astro-ph_GA |
Collisional excitation of HC3N by para- and ortho-H2: New calculations for rotational excitation of cyanoacetylene by collisions
with hydrogen molecules are performed to include the lowest 38 rotational
levels of HC3N and kinetic temperatures to 300 K. Calculations are based on the
interaction potential of Wernli et al... | astro-ph_GA |
GC-IRS13E - A puzzling association of three early-type stars: We present a detailed analysis of high resolution near-infrared imaging and
spectroscopy of the potential star cluster IRS13E very close to the massive
black hole in the Galactic Center. We detect 19 objects in IRS13E from Ks-band
images, 15 of which are als... | astro-ph_GA |
The Presence of Thermally Unstable X-ray Filaments and the Production of
Cold Gas in the NGC 5044 Group: We present the results of a deep Chandra observation of the X-ray bright,
moderate cooling flow group NGC 5044 along with the observed correlations
between the ionized, atomic, and molecular gas in this system. Th... | astro-ph_GA |
What does the first highly-redshifted 21-cm detection tell us about
early galaxies?: The Experiment to Detect the Global Epoch of Reionization Signature (EDGES)
recently reported a strong 21-cm absorption signal relative to the cosmic
microwave background at $z \sim 18$. While its anomalous amplitude may indicate
new... | astro-ph_GA |
The Effect of Noise on the Dust Temperature - Spectral Index Correlation: We investigate how uncertainties in flux measurements affect the results from
modified blackbody SED fits. We show that an inverse correlation between the
dust temperature T and spectral index (beta) naturally arises from least
squares fits due t... | astro-ph_GA |
Exploring the interstellar medium of NGC 891 at millimeter wavelengths
using the NIKA2 camera: In the framework of the IMEGIN Large Program, we used the NIKA2 camera on the
IRAM 30-m telescope to observe the edge-on galaxy NGC 891 at 1.15 mm and 2 mm
and at a FWHM of 11.1" and 17.6", respectively. Multiwavelength dat... | astro-ph_GA |
Quenching in Cosmic Sheets: Tracing the Impact of Large Scale Structure
Collapse on the Evolution of Dwarf Galaxies: Dwarf galaxies are thought to quench primarily due to environmental processes
most typically occurring in galaxy groups and clusters or around single,
massive galaxies. However, at earlier epochs, ($5 ... | astro-ph_GA |
ALMA observations of molecular tori around massive black holes: We report ALMA observations of CO(3-2) emission in a sample of 7
Seyfert/LINER galaxies at the unprecedented spatial resolution of 0.1'' = 4-9
pc. Our aim is to explore the close environment of AGN, and the dynamical
structures leading to its fueling. The ... | astro-ph_GA |
Investigating the Baryon Cycle in Interacting Dwarfs with the Very Large
Array and Pan-STARRS: We present resolved HI synthesis maps from the Very Large Array (VLA) of
three interacting dwarf systems: the NGC 3664 dwarf pair, the NGC 3264 dwarf
pair, and the UGC 4638 dwarf triplet. All three dwarf systems are capture... | astro-ph_GA |
Comparisons of Different Fitting Methods for the Physical Parameters of
A Star Cluster Sample of M33 with Spectroscopy and Photometry: Star clusters are good tracers for formation and evolution of galaxies. We
compared different fitting methods by using spectra (or by combining
photometry) to determine the physical p... | astro-ph_GA |
The impact of baryonic discs on the shapes and profiles of
self-interacting dark matter halos: We employ isolated N-body simulations to study the response of
self-interacting dark matter (SIDM) halos in the presence of the baryonic
potentials. Dark matter self-interactions lead to kinematic thermalization in
the inne... | astro-ph_GA |
BAL effect in quasars due to source orientation: We investigated a scenario where the presence of a broad absorption line
(BAL) feature in quasars (QSOs) is contingent upon the line of sight being
situated within an outflow cone emanating from the source. We examined the
mechanism of dust-driven winds based on the fail... | astro-ph_GA |
An Isolated Compact Galaxy Triplet: We report the discovery of an isolated compact galaxy triplet SDSS
J084843.45+164417.3, which is first detected by the LAMOST spectral survey and
then confirmed by the spectroscopic observation of the BFOSC of the 2.16 meter
telescope. It is found that this triplet is an isolated and... | astro-ph_GA |
High Galactic latitude runaway stars as tracers of the spiral arms: A direct observation of the spiral structure of the Galaxy is hindered by our
position in the middle of the Galactic plane. We propose a method based on the
analysis of the birthplaces of high Galactic latitude runaway stars to map the
spiral arms and ... | astro-ph_GA |
The Effects of Inhomogeneities within Colliding Flows on the Formation
and Evolution of Molecular Clouds: Observational evidence from local star-forming regions mandates that star
formation occurs shortly after, or even during, molecular cloud formation.
Models of the formation of molecular clouds in large-scale conv... | astro-ph_GA |
Characteristics of remnant radio galaxies detected in the deep radio
continuum observations from the SKA pathfinders: The cessation of AGN activity in radio galaxies leads to a remnant phase
during which jets are no longer sustained, but lobes can be detected for a
period of time before they fade away due to radiativ... | astro-ph_GA |
Clocking the Evolution of Post-Starburst Galaxies: Methods and First
Results: Detailed modeling of the recent star formation histories (SFHs) of
post-starburst (or "E+A") galaxies is impeded by the degeneracy between the
time elapsed since the starburst ended (post-burst age), the fraction of
stellar mass produced in... | astro-ph_GA |
The Host Galaxies of Hybrid Morphology Radio Sources: Based on their differing radio morphologies, powerful radio galaxies can be
separated into the Fanaroff-Riley I (FR-I) and II (FR-II) classes. Hybrid
morphology radio sources (HyMoRS) contain morphologies consistent with each
type of jet on either side: a powerful, ... | astro-ph_GA |
Numerical Models for the Diffuse Ionized Gas in Galaxies. II.
Three-dimensional radiative transfer in inhomogeneous interstellar structures
as a tool for analyzing the diffuse ionized gas: Aims: We systematically explore a plausible subset of the parameter space
involving effective temperatures and metallicities of... | astro-ph_GA |
Herschel observations of Extra-Ordinary Sources: H2S as a Probe of Dense
Gas and Possibly Hidden Luminosity Toward the Orion KL Hot Core: We present Herschel/HIFI observations of the light hydride H$_{2}$S obtained
from the full spectral scan of the Orion Kleinmann-Low nebula (Orion KL) taken
as part of the HEXOS GT ... | astro-ph_GA |
On Synthetic Absorption Line Profiles of Thermally Driven Winds from
Active Galactic Nuclei: The warm absorbers observed in more than half of all nearby active galactic
nuclei (AGN) are tracers of ionized outflows located at parsec scale distances
from the central engine. If the smallest inferred ionization parameter... | astro-ph_GA |
Cosmicflows 4: The Calibration of Optical and Infrared Tully-Fisher
Relations: This study is a part of the Cosmicflows-4 project with the aim of measuring
the distances of more than ~10,000 spiral galaxies in the local universe up to
~15,000 km/s. New HI linewidth information has come primarily from the Arecibo
Legac... | astro-ph_GA |
CHORUS. III. Photometric and Spectroscopic Properties of Ly$α$
Blobs at $z=4.9-7.0$: We report the Subaru Hyper Suprime-Cam (HSC) discovery of two Ly$\alpha$
blobs (LABs), dubbed z70-1 and z49-1 at $z=6.965$ and $z=4.888$ respectively,
that are Ly$\alpha$ emitters with a bright ($\log L_{\rm Ly\alpha}/{\rm [erg\
s^{-... | astro-ph_GA |
The Subaru high-z quasar survey: discovery of faint z~6 quasars: We present the discovery of one or two extremely faint z~6 quasars in 6.5
deg^2 utilizing a unique capability of the wide-field imaging of the
Subaru/Suprime-Cam. The quasar selection was made in (i'-z_B) and (z_B-z_R)
colors, where z_B and z_R are bandpa... | astro-ph_GA |
ALMACAL VI: Molecular gas mass density across cosmic time via a blind
search for intervening molecular absorbers: We are just starting to understand the physical processes driving the
dramatic change in cosmic star-formation rate between $z\sim 2$ and the present
day. A quantity directly linked to star formation is t... | astro-ph_GA |
HI-to-H$_2$ Transitions in Dust-Free Interstellar Gas: We present numerical computations and analysis of atomic to molecular
(HI-to-H$_2$) transitions in cool ($\sim$100 K) low-metallicity dust-free
(primordial) gas, in which molecule formation occurs via cosmic-ray driven
negative ion chemistry, and removal is by a co... | astro-ph_GA |
Neutral Hydrogen Observations of Low Surface Brightness Galaxies around
M101 and NGC 5485: We present atomic hydrogen (HI) observations using the Robert C. Byrd Green
Bank Telescope along the lines-of-sight to 27 low surface brightness (LSB)
dwarf galaxy candidates discovered in optical searches around M101. We detec... | astro-ph_GA |
Evolution of virial clouds-I: from surface of last scattering up to the
formation of population-III stars: The analysis of WMAP and Planck CMB data has shown the presence of
temperature asymmetries towards the halos of several galaxies, which is
probably due to the rotation of clouds present in these halos about the
... | astro-ph_GA |
Genetically modified halos: towards controlled experiments in
$Λ$CDM galaxy formation: We propose a method to generate `genetically-modified' (GM) initial
conditions for high-resolution simulations of galaxy formation in a
cosmological context. Building on the Hoffman-Ribak algorithm, we start from a
reference simula... | astro-ph_GA |
Measuring the dust attenuation law of galaxies using photometric data: Fitting model spectral energy distributions (SED) to galaxy photometric data
is a widely used method to recover galaxy parameters from galaxy surveys.
However, the parameter space used to describe galaxies is wide and
interdependent, and distinction... | astro-ph_GA |
The OTELO survey: Nature and mass-metallicity relation for H$α$
emitters at $z\sim\,0.4$: A sample of low-mass H$\alpha$ emission line sources (ELS) at $z\,\sim\,0.4$
was studied in the context of the mass-metallicty relation (MZR) and its
possible evolution. We drew our sample from the OSIRIS Tunable Emission Line
O... | astro-ph_GA |
Detecting Low-Mass Perturbers in Cluster Lenses using Curved Arc Bases: Strong gravitationally lensed arcs produced by galaxy clusters have been
observationally detected for several decades now. These strong lensing
constraints provided high-fidelity mass models for cluster lenses that include
substructure down to $10^... | astro-ph_GA |
The formation and physical origin of highly ionized cooling gas: We present a simple model that explains the origin of warm diffuse gas seen
primarily as highly ionized absorption line systems in the spectra of
background sources. We predict the observed column densities of several highly
ionized transitions such as OV... | astro-ph_GA |
The X-SHOOTER Lyman-$α$ survey at z=2 (XLS-z2) I: What makes a
galaxy a Lyman-$α$ emitter?: We present the first results from the X-SHOOTER Lyman-$\alpha$ survey at
$z=2$ (XLS-$z2$). XLS-$z2$ is a deep spectroscopic survey of 35 Lyman-$\alpha$
emitters (LAEs) utilising $\approx90$ hours of exposure time with VLT/X-SH... | astro-ph_GA |
Early Science with the Large Millimeter Telescope: discovery of the
12CO(1-0) emission line in the ring galaxy, VIIZw466: We report an early science discovery of the CO(1-0) emission line in the
collisional ring galaxy, VII Zw466, using the Redshift Search Receiver
instrument on the Large Millimeter Telescope Alfonso... | astro-ph_GA |
Host Galaxy Properties and Black Hole Mass of Swift J164449.3+573451
from Multi-Wavelength Long-Term Monitoring and HST Data: We study the host galaxy properties of the tidal disruption object, Swift
J164449.3+573451 using long-term optical to near-infrared (NIR) data. First, we
decompose the galaxy surface brightnes... | astro-ph_GA |
Interactions of the Infrared bubble N4 with the surroundings: The physical mechanisms that induce the transformation of a certain mass of
gas in new stars are far from being well understood. Infrared bubbles
associated with HII regions have been considered to be good samples of
investigating triggered star formation. I... | astro-ph_GA |
The Dust Properties of Bubble HII Regions as seen by Herschel: Because of their relatively simple morphology, "bubble" HII regions have been
instrumental to our understanding of star formation triggered by HII regions.
With the far-infrared (FIR) spectral coverage of the Herschel satellite, we can
access the wavelength... | astro-ph_GA |
The Mechanical Alignment of Dust (MAD) I: On the spin-up process of
fractal grains by a gas-dust drift: Context: Aligned dust grains are commonly exploited to probe the magnetic
field orientation. However, the exact physical processes that result in a
coherent large-scale grain alignment are far from being constraine... | astro-ph_GA |
Neutral carbon and CO in 76 (U)LIRGs and starburst galaxy centers A
method to determine molecular gas properties in luminous galaxies: We present fluxes in both neutral carbon [CI] lines at the centers of 76
galaxies with FIR luminosities between 10^{9} and 10^{12} L(o) obtained with
Herschel-SPIRE and with ground-ba... | astro-ph_GA |
H2CO ortho-to-para ratio in the protoplanetary disk HD 163296: Ortho-to-para (o/p) ratios of species like water, ammonia and formaldehyde
(H2CO) are believed to encode information about the formation history of the
molecule. Measurements of o/p ratios in protoplanetary disks could thus be used
to constrain their physic... | astro-ph_GA |
The Star Formation Reference Survey. II. Activity demographics and
host-galaxy properties for Infrared-selected galaxies: We present activity demographics and host-galaxy properties of
infrared-selected galaxies in the local Universe, using the representative Star
Formation Reference Survey (SFRS). Our classification... | astro-ph_GA |
Galaxy evolution within the Kilo-Degree Survey: The ESO Public Kilo-Degree Survey (KiDS) is an optical wide-field imaging
survey carried out with the VLT Survey Telescope and the OmegaCAM camera. KiDS
will scan 1500 square degrees in four optical filters (u, g, r, i). Designed to
be a weak lensing survey, it is ideal f... | astro-ph_GA |
A flux-ratio anomaly in the CO spectral line emission from
gravitationally-lensed quasar MG J0414+0534: We present an analysis of archival observations with the Atacama Large
(sub-)Millimetre Array (ALMA) of the gravitationally lensed quasar MG
J0414+0534, which show four compact images of the quasar and an Einstein ... | astro-ph_GA |
HH 80/81: Structure and Kinematics of the Fastest Protostellar Outflow: Hubble Space Telescope images obtained in 2018 are combined with archival HST
data taken in 1995 to detect changes and measure proper motions in the HH 80/81
shock complex which is powered by the fastest known jet driven by a forming
star, the mass... | astro-ph_GA |
Rapid Chemical Enrichment by Intermittent Star Formation in GN-z11: We interpret the peculiar super-solar nitrogen abundance recently reported by
the James Webb Space Telescope observations for GN-z11 ($z=10.6$) using our
state-of-the-art chemical evolution models. The observed CNO ratios can be
successfully reproduced... | astro-ph_GA |
An All-Sky Sample of Intermediate-Mass Star-Forming Regions: We present an all-sky sample of 984 candidate intermediate-mass Galactic
star-forming regions color-selected from the Infrared Astronomical Satellite
(IRAS) Point Source Catalog and morphologically classify each object using
mid-infrared Wide-field Infrared S... | astro-ph_GA |
The Spitzer Local Volume Legacy (LVL) Global Optical Photometry: We present the global optical photometry of 246 galaxies in the Local Volume
Legacy (LVL) survey. The full volume-limited sample consists of 258 nearby (D <
11 Mpc) galaxies whose absolute B-band magnitude span a range of -9.6 < M_B <
-20.7 mag. A composi... | astro-ph_GA |
A VLT/FLAMES study of the peculiar intermediate-age Large Magellanic
Cloud star cluster NGC 1846 - I. Kinematics: In this paper we present high resolution VLT/FLAMES observations of red giant
stars in the massive intermediate-age Large Magellanic Cloud star cluster NGC
1846, which, on the basis of its extended main-s... | astro-ph_GA |
Identification of Ambient Molecular Clouds Associated with Galactic
Supernova Remnant IC443: The Galactic supernova remnant (SNR) IC443 is one of the most studied
core-collapse SNRs for its interaction with molecular clouds. However, the
ambient molecular clouds with which IC443 is interacting have not been
thoroughl... | astro-ph_GA |
Analysis of the interstellar matter at the periphery of the supershell
surrounding the CYG OB1 association in 2.12 micron molecular hydrogen line: We present observations of the vdB 130 cluster vicinity in a narrow-band
filter centered at a $2.12\,\mu$m molecular hydrogen line performed at the
Caucasus Mountain Obser... | astro-ph_GA |
Magnetic Field of Molecular Gas Measured with the Velocity Gradient
Technique I. Orion A: Magnetic fields play an important role in the evolution of molecular clouds
and star formation. Using the Velocity Gradient Technique (VGT) model, we
measured the magnetic field in Orion A using the 12CO, 13CO, and C18O (1-0)
em... | astro-ph_GA |
Gas morphology and energetics at the surface of PDRs: new insights with
Herschel observations of NGC 7023: We investigate the physics and chemistry of the gas and dust in dense
photon-dominated regions (PDRs), along with their dependence on the
illuminating UV field. Using Herschel-HIFI observations, we study the gas... | astro-ph_GA |
UVIT view of dwarf irregular galaxy IC 2574 : Is the star formation
triggered due to expanding H$~$I shells?: Star forming dwarf galaxies in the local volume are diverse and are ideal
test beds to understand details of star formation in a variety of environments.
Here, we present a deep FUV imaging study of a nearby ... | astro-ph_GA |
The star formation history in the solar neighborhood as told by massive
white dwarfs: White dwarfs are the remnants of low and intermediate mass stars. Because of
electron degeneracy, their evolution is just a simple gravothermal process of
cooling. Recently, thanks to Gaia data, it has been possible to construct the... | astro-ph_GA |
Still at Odds with Conventional Galaxy Evolution: The Star Formation
History of Ultra-Diffuse Galaxy Dragonfly 44: We study the star formation history (SFH) of the ultra-diffuse galaxy (UDG)
Dragonfly 44 (DF44) based on the simultaneous fit to near-ultraviolet to
near-infrared photometry and high signal-to-noise opti... | astro-ph_GA |
DNC/HNC and N2D+/N2H+ ratios in high-mass star forming cores: Chemical models predict that the deuterated fraction (the column density
ratio between a molecule containing D and its counterpart containing H) of
N2H+, Dfrac(N2H+), is high in massive pre-protostellar cores and rapidly drops
of an order of magnitude after ... | astro-ph_GA |
The Einasto model for dark matter haloes: Context: The Einasto model has become one of the most popular models for
describing the density profile of dark matter haloes. There have been
relatively few comprehensive studies on the dynamical structure of the Einasto
model, mainly because only a limited number of propertie... | astro-ph_GA |
Warm Molecular Gas in the Central Parsecs of the Buried Nucleus of NGC
4418 Traced with the Fundamental CO Ro-vibrational Absorptions: We investigated the inner buried nucleus of a nearby luminous infrared galaxy
NGC 4418 using high-resolution spectroscopy of fundamental carbon monoxide (CO)
ro-vibrational absorption... | astro-ph_GA |
Dynamical masses of brightest cluster galaxies II: constraints on the
stellar IMF: We use stellar and dynamical mass profiles, combined with a stellar
population analysis, of 32 brightest cluster galaxies (BCGs) at redshifts of
0.05 $\leq z \leq$ 0.30, to place constraints on their stellar Initial Mass
Function (IMF)... | astro-ph_GA |
A population of dust-enshrouded objects orbiting the Galactic black hole: The central 0.1 parsecs of the Milky Way host a supermassive black hole
identified with the position of the radio and infrared source Sagittarius A*, a
cluster of young, massive stars (the S stars) and various gaseous features.
Recently, two unus... | astro-ph_GA |
ISM properties of a Massive Dusty Star-Forming Galaxy discovered at z ~
7: We report the discovery and constrain the physical conditions of the
interstellar medium of the highest-redshift millimeter-selected dusty
star-forming galaxy (DSFG) to date, SPT-S J031132-5823.4 (hereafter
SPT0311-58), at $z=6.900 +/- 0.002$.... | astro-ph_GA |
Orbital tori for non-axisymmetric galaxies: Our Galaxy's bar makes the Galaxy's potential distinctly non-axisymmetric.
All orbits are affected by non-axisymmetry, and significant numbers are
qualitatively changed by being trapped at a resonance with the bar. Orbital
tori are used to compute these effects. Thick-disc or... | astro-ph_GA |
Discovery of the Magellanic Stellar Stream Out to 100 Kiloparsecs: The Magellanic Stream (MS) - an enormous ribbon of gas spanning $140^\circ$
of the southern sky trailing the Magellanic Clouds - has been exquisitely
mapped in the five decades since its discovery. However, despite concerted
efforts, no stellar counterp... | astro-ph_GA |
History-independent tracers: Forgetful molecular probes of the physical
conditions of the dense interstellar medium: Molecular line emission is a powerful probe of the physical conditions of
astrophysical objects but can be complex to model, and it is often unclear
which transitions would be the best targets for obse... | astro-ph_GA |
The black hole and host galaxy growth in an isolated $z\sim 6$ QSO
observed with ALMA: The outstanding mass growth of supermassive black holes (SMBHs) at the
Reionisation Epoch and how it is related to the concurrent growth of their host
galaxies, poses challenges to theoretical models aimed at explaining how these
s... | astro-ph_GA |
MMT Spectroscopy of Lyman-alpha at z$\simeq$7: Evidence for Accelerated
Reionization Around Massive Galaxies: Reionization-era galaxies tend to exhibit weak Ly$\alpha$ emission, likely
reflecting attenuation from an increasingly neutral IGM. Recent observations
have begun to reveal exceptions to this picture, with st... | astro-ph_GA |
Dark-ages Reionization & Galaxy Formation Simulation I: The dynamical
lives of high redshift galaxies: We present the Dark-ages Reionization and Galaxy-formation Observables from
Numerical Simulations (DRAGONS) program and Tiamat, the collisionless N-body
simulation program upon which DRAGONS is built. The primary tr... | astro-ph_GA |
Galaxy And Mass Assembly (GAMA): Accurate Panchromatic Photometry from
Optical Priors using LAMBDAR: We present the Lambda Adaptive Multi-Band Deblending Algorithm in R
(LAMBDAR), a novel code for calculating matched aperture photometry across
images that are neither pixel- nor PSF-matched, using prior aperture
defin... | astro-ph_GA |
Quantifying the Significance of the Magnetic Field from Large-Scale
Cloud to Collapsing Core: Self-Similarity, Mass-to-Flux Ratio and Star
Formation Efficiency: Dust polarization observational results are analyzed for the high-mass star
formation region W51 from the largest parent cloud ($\sim$ 2~pc, JCMT) to the
l... | astro-ph_GA |
The impact of JWST broad-band filter choice on photometric redshift
estimation: The determination of galaxy redshifts in James Webb Space Telescope (JWST)'s
blank-field surveys will mostly rely on photometric estimates, based on the
data provided by JWST's Near-Infrared Camera (NIRCam) at 0.6-5.0 {\mu}m and Mid
Infra... | astro-ph_GA |
High redshift JWST predictions from IllustrisTNG: III. Infrared
luminosity functions, obscured star formation and dust temperature of
high-redshift galaxies: We post-process galaxies in the IllustrisTNG simulations with SKIRT radiative
transfer calculations to make predictions for the rest-frame near-infrared
(NIR)... | astro-ph_GA |
Formation of the first galaxies in the aftermath of the first supernovae: We perform high-resolution cosmological hydrodynamic simulations to study the
formation of the first galaxies that reach the masses of
$10^{8-9}~h^{-1}~M_\odot$ at $z=9$. The resolution of the simulations is high
enough to resolve minihaloes and ... | astro-ph_GA |
Application of Convolutional Neural Networks to Predict Magnetic Fields
Directions in Turbulent Clouds: We adopt the deep learning method CASI-3D (Convolutional Approach to
Structure Identification-3D) to infer the orientation of magnetic fields in
sub-/trans- Alfvenic turbulent clouds from molecular line emission. W... | astro-ph_GA |
The Extremely Luminous Quasar Survey in the Pan-STARRS 1 Footprint
(PS-ELQS): We present the results of the Extremely Luminous Quasar Survey in the $3\pi$
survey of the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS;
PS1). This effort applies the successful quasar selection strategy of the
Extremely... | astro-ph_GA |
A gas cloud on its way towards the super-massive black hole in the
Galactic Centre: Measurements of stellar orbits provide compelling evidence that the compact
radio source Sagittarius A* at the Galactic Centre is a black hole four million
times the mass of the Sun. With the exception of modest X-ray and infrared
fla... | astro-ph_GA |
Spectropolarimetry of the changing-look active galactic nucleus Mrk 1018: We have obtained new spectropolarimetric observations at visible wavelengths
of the changing-look active galactic nucleus (AGN) Mrk 1018. The AGN direct
spectrum shows an extremely weak continuum with faint broad H$\beta$ and
H$\alpha$ emission l... | astro-ph_GA |
Implications of the SPEAR FUV Maps on Our Understanding of the ISM: The distribution of a low-density transition temperature (10^4.5 - 10^5.5 K)
gas in the interstellar medium conveys the character and evolution of diffuse
matter in the Galaxy. This difficult to observe component of the ISM emits
mainly in the far-ultr... | astro-ph_GA |
Galactic Wind in the Nearby Starburst Galaxy NGC 253 Observed with the
Kyoto3DII Fabry-Perot Mode: We have observed the central region of the nearby starburst galaxy NGC 253
with the Kyoto Tridimensional Spectrograph II (Kyoto3DII) Fabry-Perot mode in
order to investigate the properties of its galactic wind. Since th... | astro-ph_GA |
The AGORA High-Resolution Galaxy Simulations Comparison Project: We introduce the AGORA project, a comprehensive numerical study of
well-resolved galaxies within the LCDM cosmology. Cosmological hydrodynamic
simulations with force resolutions of ~100 proper pc or better will be run with
a variety of code platforms to f... | astro-ph_GA |
Strong suppression of star formation and spiral arm formation in disk
galaxies with counter-rotating gas disks: Galaxy-wide star formation can be quenched by a number of physical processes
such as environmental effects (e.g., ram pressure stripping) and supernova
feedback. Using numerical simulations, we here demonst... | astro-ph_GA |
Comparisons of Different Fitting Methods for the Physical Parameters of
A Star Cluster Sample of M33 with Spectroscopy and Photometry: Star clusters are good tracers for formation and evolution of galaxies. We
compared different fitting methods by using spectra (or by combining
photometry) to determine the physical p... | astro-ph_GA |
Testing Galaxy Formation Simulations with Damped Lyman-$α$
Abundance and Metallicity Evolution: We examine the properties of damped Lyman-$\alpha$ absorbers (DLAs) emerging
from a single set of cosmological initial conditions in two state-of-the-art
cosmological hydrodynamic simulations: {\sc Simba} and {\sc Technico... | astro-ph_GA |
Image Stacking Analysis of SDSS Galaxies with AKARI Far-Infrared
Surveyor Maps at 65μm, 90μm, and 140μm: We perform image stacking analysis of Sloan Digital Sky Survey (SDSS)
photometric galaxies over the AKARI Far-Infrared Surveyor (FIS) maps at
65{\mu}m, 90{\mu}m, and 140{\mu}m. The resulting image profiles are dec... | astro-ph_GA |
Lyman continuum leakage in faint star-forming galaxies at redshift
z=3-3.5 probed by gamma-ray bursts: We present the observations of Lyman continuum (LyC) emission in the
afterglow spectra of GRB 191004B at $z=3.5055$, together with those of the
other two previously known LyC-emitting long gamma-ray bursts (LGRB) (G... | astro-ph_GA |
PACS photometry of the Herschel Reference Survey -
Far-infrared/sub-millimeter colours as tracers of dust properties in nearby
galaxies: We present Herschel/PACS 100 and 160 micron integrated photometry for the 323
galaxies in the Herschel Reference Survey (HRS), a K-band-, volume-limited
sample of galaxies in the ... | astro-ph_GA |
On the Tremaine-Weinberg method: how much can we trust gas tracers to
measure pattern speeds?: Pattern speeds are a fundamental parameter of the dynamical features (e.g.
bars, spiral arms) of a galaxy, setting resonance locations. Pattern speeds are
not directly observable, so the Tremaine-Weinberg (TW) method has be... | astro-ph_GA |
Interacting Galactic Neutral Hydrogen Filaments and Associated
High-Frequency Continuum Emission: Galactic HI emission profiles in an area where several large-scale filaments
at velocities ranging from -46 km/s to 0 km/s overlap were decomposed into
Gaussian components. Eighteen families of components defined by simi... | astro-ph_GA |
Seeds of Life in Space SOLIS. IX. Chemical segregation of $\rm SO_2$ and
SO toward the low-mass protostellar shocked region of L1157: We present observations of SO and $\rm SO_2$ lines toward the shocked regions
along the L1157 chemically rich outflow, taken in the context of the Seeds Of
Life In Space IRAM-NOrthern ... | astro-ph_GA |
A new method for unveiling Open Clusters in Gaia: new nearby Open
Clusters confirmed by DR2: The publication of the Gaia Data Release 2 (Gaia DR2) opens a new era in
Astronomy. It includes precise astrometric data (positions, proper motions and
parallaxes) for more than $1.3$ billion sources, mostly stars. To analyse... | astro-ph_GA |
The clumpiness of molecular clouds: HCO+ (3--2) survey near Herbig-Haro
objects: Some well-studied Herbig Haro objects have associated with them one or more
cold, dense, and quiescent clumps of gas. We propose that such clumps near an
HH object can be used as a general measure of clumpiness in the molecular cloud
tha... | astro-ph_GA |
JADES: A large population of obscured, narrow line AGN at high redshift: We present the identification of 42 narrow-line active galactic nuclei
(type-2 AGN) candidates in the two deepest observations of the JADES
spectroscopic survey with JWST/NIRSpec. The spectral coverage and the depth of
our observations allow us to... | astro-ph_GA |
An Active Galactic Nucleus Recognition Model based on Deep Neural
Network: To understand the cosmic accretion history of supermassive black holes,
separating the radiation from active galactic nuclei (AGNs) and star-forming
galaxies (SFGs) is critical. However, a reliable solution on photometrically
recognising AGNs ... | astro-ph_GA |
Evidence for a Rotational Component in the Circumgalactic Medium of
Nearby Galaxies: We present results of a study comparing the relative velocity of $\rm
Ly\alpha$ absorbers to the rotation velocity of nearby galaxy disks in the
local universe ($z \leq 0.03$). We have obtained rotation curves via long-slit
spectrosc... | astro-ph_GA |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.