Astrophysics · Physics & Astronomy
Astrophysics of Galaxies
The newest papers in Astrophysics of Galaxies that ReadSearch has read, newest first. Each links to its own page, with its authors, date, where it was published and the original.
1,212 papers, from 6 September 2026 to 5 November 2026: 1,212 arXiv preprints.
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Newest papers, page 46
A two-stage settling of the Milky Way disk revealed by precise ChronoGal ages
The spatial distribution of Galactic disk stars of different ages and metallicities encodes its dynamical evolution history and formation pathways.Merger remnant in TXS 1033+026 - I: $\rm Hα$ and HI 21-cm observations suggest counter-rotating gas
We have conducted eMERLIN and GEMINI IFU observations towards TXS 1033+026, a post-merger ultraluminous infrared galaxy, to study the radio continuum, $\rm Hα$ and HI 21-cm lines at sub-kpc scales.Discovery of thermal radio recombination line emission toward the high-mass protostar IRAS18162$-$2048
The physical conditions within the innermost few tens of au of high-mass protostars ($M_*>8~M_\odot$) remain largely unexplored.A multi-scale view of molecular gas and magnetic fields in the Antennae galaxies
Major mergers are transformative events in galaxy evolution, dynamically reshaping the stellar and gas makeup of the hosts, as well as the galaxy-scale magnetic fields (B-fields) that permeate their…Baryonic Imprints on DM Halos: the concentration-mass relation and its dependence on 28 model parameters in the CAMELS suite
The evolution of baryons in halos, as well as their gravitational impact on the total-matter phase space, has a rich phenomenology and is vital in answering many questions in both cosmology and…Searching for Green Pea Galaxies in the SFACT Survey
Green Pea galaxies (GPs) are a class of rare, extreme star-forming galaxies whose physical properties closely resemble high-redshift Ly-α emitting galaxies.SCALES. I. Bridging Lensed Clump - Giant Clump Scales in Lensed Galaxies at $z=1-4$
Dense star-forming regions in $z>1$ galaxies, often termed 'clumps', have been studied across two distinct regimes of telescope resolution, each motivating interpretations in tension with the other.SCALES. II. The Internal Composition of Giant Star-Forming Clumps at $z = 1 - 4$
Star-forming structures of scale $\sim0.5-1\,\mathrm{kpc}$, dubbed 'giant' star-forming clumps, are routinely detected in unlensed surveys of $z > 1$ galaxies.Internal Radiative Feedback Triggers Global Collapse and Direct-Collapse Black Hole Formation in Metal-free Atomic-Cooling Haloes
The formation of heavy seed black holes from the collapse of supermassive stars (SMSs) is a promising pathway to the supermassive black holes (SMBHs).The Virgo Cluster as a Case Study for Ancient Cosmic Ray Halos in Radio and X-rays
Virgo is the nearest cool core (CC) galaxy cluster, and is archetypal of the class of X-ray weak CCs.The differences in the Narrow Line Region of nearby QSOs 1 and QSOs 2: II - Signatures of kinetic feedback
We compare the integrated kinematic properties of the Narrow-Line Region (NLR) of ~1500 type 1 and ~700 type 2 QSOs at 0.4 < z < 0.5 using emission-line profiles from SDSS-IV spectra.Baryonic Imprints on DM Halos: characterizing the full concentration-mass probability distribution with CAMELS
The halo concentration, which represents the distribution of matter within a halo, is a vital tool for modeling the matter distribution on scales ranging from megaparsecs to sub-kiloparsecs.The Merian Survey: A Statistical Census of Bright Satellites of Sub-Milky Way-Mass Galaxies
Satellite populations provide sensitive tests of the galaxy-halo connection, but studies have largely focused on Milky Way (MW)-mass host galaxies or a small number of nearby dwarf galaxy hosts.A concordance model of neutron star kicks
Neutron stars (NSs) receive natal kicks during supernovae that affect their survival in binaries and motion through the Galaxy.Stars Would Remember a Recent Gravitational Transition: Testing G-step Resolutions of the Hubble Tension with Red Dwarfs
We test the hypothesis that Newton's gravitational constant underwent a rapid transition approximately $73$-$130\,{\rm Myr}$ ago, as proposed in some resolutions of the Hubble tension.Measuring the Age and Initial Composition of Interstellar Objects
Measuring the age and composition of interstellar objects is necessary to understand their origins.Relaxation of a Vlasov gas to an inhomogeneous state due to phase space mixing in an axisymmetric potential: A Newtonian analogy of the Kerr orbital motion
We explore the dynamics of a Vlasov gas propagating in an external axisymmetric potential consisting of a central potential with an additional quadrupolar component which gives rise to two potential…Do Submillimeter Galaxies Trace Megaparsec Large-scale Structures? -- An Overdensity Analysis of 449 Submillimeter Galaxies in COSMOS
We present an environmental analysis and overdensity catalog for a large sample of submillimeter galaxies (SMGs) in the COSMOS field in order to understand whether SMGs are signposts of…Chemical complexity in feedback from supernova remnants: first detection of PO+ in IC443 and W44
Supernova remnant (SNR) may shape the physical and chemical properties of star formation.25 Years of Mrk 421 with XMM-Newton: Unveiling Structured Jets and Energy-Dependent Escape
We present a long-term X-ray spectral and timing analysis of the TeV blazar Mrk~421 based on nearly a quarter century of archival \textit{XMM-Newton}/pn observations obtained between 2000 and 2025.