Galaxies & Cosmology
Galaxy formation, evolution, structure, and cosmological simulations.
astro-ph.GA · 340 papersSmall and Complex I: The Three Component Structure of $z \sim 0$ Massive Compact Quiescent Galaxies
Massive compact quiescent galaxies at z~0 predominantly exhibit a three-component structure (bulge, disk, envelope), with compact disks.
X-ray luminous late-type giants: an overlooked population contributing to the Galactic ridge iron line emission
X-ray luminous late-type giants significantly contribute to the Galactic ridge iron line emission puzzle.
Search for quasar pairs with Gaia astrometric data. II. Photometric redshift prediction with machine learning for the MGQPC catalogue
This paper uses machine learning to predict photometric redshifts for quasars, identifying 185 high-probability quasar pair candidates.
The Spitzer Spectroscopic Data Fusion -- Merged Spectroscopic Redshift Catalogs in Spitzer Fields
The Spitzer Spectroscopic Data Fusion provides merged spectroscopic redshift catalogs for extragalactic fields, enhancing astronomical data analysis.
Space as a spectroscopic laboratory: High-resolution spectroscopy of the [$^{13}$C II] hyperfine structure with SOFIA/upGREAT
Astronomical observations with SOFIA/upGREAT precisely determine [$^{13}$C II] hyperfine structure constants, demonstrating space as an atomic physics lab.
Testing the BH$^*$ Model: a UV-to-Optical Spectral Fitting of The Cliff
Using JWST data, this study validates the Black Hole Star (BH*) model for LRDs by fitting "The Cliff," revealing its host galaxy properties.
A Changing-Look Seyfert Discovered by eROSITA Reveals a Two-Component Broad-Line Region
eROSITA discovered a changing-look Seyfert AGN, HE 1237-2252, revealing its broad-line region has two distinct components tied to accretion rate changes.
Systematic Comparison between Constrained Transport and Mixed Divergence Cleaning Methods for Astrophysical Magnetohydrodynamic Simulations
This paper systematically compares Constrained Transport (CT) and Dedner's divergence cleaning for MHD simulations, finding CT more accurate.
Constraining the Galactic bar using the M92 stellar stream
Researchers used the M92 stellar stream and DESI data to precisely measure the Milky Way bar's pattern speed, marking a novel approach for Galactic potential studies.
Potamides: Mapping Dark Matter Halo Shapes from Stellar Stream Tracks in the Local Universe
Potamides uses stellar stream curvature to infer dark matter halo shapes and orientations in individual external galaxies, providing new observational constraints.
The diverse morphologies and evolution of low-luminosity edge-brightened radio galaxies
This study reveals diverse morphologies and active jet dynamics in low-luminosity edge-brightened radio galaxies, challenging traditional classifications.
Origin and evolution of NiI and FeI in the coma of the interstellar comet 3I/ATLAS throughout its trajectory
Observations of interstellar comet 3I/ATLAS reveal strong, asymmetric NiI/FeI emission, explained by subsurface carbonyl sublimation and a transient heat source.
Dynamical evolution of Milky Way globular clusters on the cosmological timescale II. Terzan 2, 4, and 5 mass loss and collision tracking
N-body simulations show that mutual interactions between Terzan globular clusters in the Galactic center significantly increase mass loss and cause shape deformations.
Mass Production of 2023 KMTNet Microlensing Planets. III: Three Planets from the Subprime Field
KMTNet's 2023 subprime field analysis confirms three new microlensing planets, adding to 25 total, with consistent mass-ratio distribution.
First Interstellar Detection of Methyl Carbamate: A New Observational Anchor for Glycine Chemistry
Researchers made the first interstellar detection of methyl carbamate, establishing it as a new anchor for understanding glycine chemistry in star-forming regions.
Scylla VI: Parsec-Scale Dust Extinction Maps in the SMC and LMC
This paper introduces a novel kriging-based method to create the highest-resolution parsec-scale dust extinction maps for the SMC and LMC.
$Ab$ $initio$ modeling of Galactic dust polarized CMB foreground
This paper uses exascale simulations to model Galactic dust polarization, explaining E/B mode asymmetry and positive TE signals for CMB experiments.
$V/σ$ Trends with Mass for Dwarf Galaxies from the Marvelous Massive Dwarfs Suite
Simulations show dwarf galaxy $V/σ$ increases with mass, with gas and young stars being rotation-supported while old stars are dispersion-supported.
On the origin of the rotation of massive stars
Protostellar jets, driven by magnetic fields, are found to be the primary mechanism determining the rotation rates of massive stars by removing angular momentum.
Spectrally and spatially resolved (sub)millimeter HCN-to-HCO$^{+}$ flux ratios in nearby ultraluminous infrared galaxies
This study uses ALMA to investigate spectrally and spatially resolved HCN-to-HCO+ ratios in 18 ULIRGs, linking elevated ratios to outflows and AGN activity.
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