output
19912026
Showing 2025 · astro-ph.GAShow all

46 papers · 2 filters

astro-ph.GA2025

photoD with Rubin's Data Preview 1: first stellar photometric distances and deficit of faint blue stars. Stellar distances with Rubin's DP1

L. Palaversa, E. Donev, Ž. Ivezić +96

Aims: We investigate the utility of Rubin's Data Preview 1 for estimating stellar number density profile in the Milky Way halo. Methods: Stellar broad-band near-UV to near-IR $ugri…

astro-ph.GA2025★ 2 cited

OzDES Reverberation Mapping of Active Galactic Nuclei: Final Data Release, Black-Hole Mass Results, & Scaling Relations

H. McDougall, T. M. Davis, Z. Yu +53

Over the last decade, the Australian Dark Energy (OzDES) collaboration has used Reverberation Mapping to measure the masses of high redshift supermassive black holes. Here we prese…

astro-ph.GA2025

An almost NIRCam-dark dusty star-forming galaxy at z=6.63

Longji Bing, Seb Oliver, Mengyuan Xiao +28

We present AC-2168, an almost NIRCam-dark, millimetre-bright galaxy in the COSMOS field. The source was identified blindly in ALMA Band-4 continuum data and remains undetected in t…

astro-ph.GA2025★ 3 cited

The AGORA High-resolution Galaxy Simulations Comparison Project. X: Formation and Evolution of Galaxies at the High-redshift Frontier

Hyeonyong Kim, Ji-hoon Kim, Minyong Jung +22

Recent observations from JWST have revealed unexpectedly luminous galaxies, exhibiting stellar masses and luminosities significantly higher than predicted by theoretical models at…

astro-ph.GA2025★ 5 cited

The dark side of early galaxies: uncovers dark-matter fractions at

A. Lola Danhaive, Sandro Tacchella, Andrew J. Bunker +15

JWST/NIRCam slitless spectroscopy enables dynamical mass measurements for typical star-forming galaxies only a billion years after the Big Bang. We model the H morpho-kinematics…

astro-ph.GA2025★ 3 cited

Possible photometric signatures of nebular-dominated emission in JADES galaxies

James A. A. Trussler, Alex J. Cameron, Daniel J. Eisenstein +21

The discovery of high-redshift galaxies exhibiting a steep spectral UV downturn potentially indicative of two-photon continuum emission marks a turning point in our search for sign…

astro-ph.GA2025★ 5 cited

Beyond the stars: Linking H sizes, kinematics, and star formation in galaxies at with JWST grism surveys and

A. Lola Danhaive, Sandro Tacchella, William McClymont +15

Understanding how galaxies assemble their mass during the first billion years of cosmic time is a central goal of extragalactic astrophysics, yet joint constraints on their sizes a…

astro-ph.GA2025★ 3 cited

JADES Dark Horse: demonstrating high-multiplex observations with JWST/NIRSpec dense-shutter spectroscopy in the JADES Origins Field

Francesco D'Eugenio, Erica J. Nelson, Daniel J. Eisenstein +40

We present JWST/NIRSpec dense-shutter spectroscopy (DSS). This novel observing strategy with the NIRSpec/MSA deliberately permits a high number of controlled spectral overlaps to r…

astro-ph.GA2025★ 1 cited

Black Holes in the Shadow: The Missing High-Ionization Lines in the Earliest JWST AGNs

Greta Zucchi, Xihan Ji, Piero Madau +5

Observations with the James Webb Space Telescope (JWST) have uncovered a substantial population of high-redshift, broad-line active galactic nuclei (AGNs), whose properties challen…

astro-ph.GA2025★ 9 cited

JADES Data Release 4 Paper I: Sample Selection, Observing Strategy and Redshifts of the complete spectroscopic sample

Emma Curtis-Lake, Alex J. Cameron, Andrew J. Bunker +34

This paper accompanies Data Release 4 of the JWST Deep Extragalactic Survey (JADES), which presents the full NIRSpec spectroscopy of the survey. We provide spectra of 5190 targets…

astro-ph.GA2025★ 1 cited

Magnetic fields in galactic environments probed by Fast Radio Bursts

Ilya S. Khrykin, Nicolas Tejos, J. Xavier Prochaska +7

FRBs constitute a unique probe of various astrophysical and cosmological environments via their characteristic dispersion and rotation (RM) measures that encode information about t…

astro-ph.GA2025★ 6 cited

COSMOS-Web galaxy groups: Evolution of red sequence and quiescent galaxy fraction

Greta Toni, Matteo Maturi, Gianluca Castignani +33

We investigate the redshift and group richness dependence of the quiescent fraction and red-sequence (RS) parameters in COSMOS galaxy groups from z=0 to z=3.7. We analyzed the deep…

astro-ph.GA2025★ 17 cited

A direct black hole mass measurement in a Little Red Dot at the Epoch of Reionization

Ignas Juodžbalis, Cosimo Marconcini, Francesco D'Eugenio +37

Recent discoveries of faint active galactic nuclei (AGN) at the redshift frontier have revealed a plethora of broad \Halpha emitters with optically red continua, named Little Red D…

astro-ph.GA2025★ 3 cited

Strength in Numbers: Red Galaxies Bolster the Cosmic Star Formation Rate Density at z > 3

L. Barrufet, J. S. Dunlop, R. Begley +20

A comprehensive account of the cosmic star-formation history demands an accurate census of dust-enshrouded star formation over cosmic time. We provide strong new constraints from a…

astro-ph.GA2025★ 8 cited

A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I

B. D. Ball, R. Kothes, E. Rosolowsky +16

We use data from the EMU (Evolutionary Map of the Universe) and POSSUM (Polarization Sky Survey of the Universe's Magnetism) radio southern sky surveys, conducted with the Australi…

astro-ph.GA2025★ 3 cited

Morphology and stellar populations of a candidate ultra-diffuse galaxy in early Euclid and Rubin imaging

Aaron J. Romanowsky, Yimeng Tang, Kevin A. Bundy

We present multi-wavelength imaging and analysis of a low surface brightness (LSB) dwarf galaxy in the Extended Chandra Deep Field South (ECDFS), SMDG0333094-280938, with particula…

astro-ph.GA2025

Intergalactic Medium Tomography with the Sunburst Arc

Michelle A. Berg, John Chisholm, J. Xavier Prochaska +9

Gravitational lensing has transformed the field of gas tomography in the intergalactic medium (IGM) and circumgalactic medium (CGM). Here we use the brightest lensed galaxy identif…

astro-ph.GA2025★ 1 cited

Radial velocities and stellar populations for a sample of MATLAS survey dwarfs

Kate Southon, Jonah S. Gannon, Duncan A. Forbes +4

Spectroscopic observations are essential for confirming associations, measuring kinematics, and determining stellar populations in dwarf galaxies. Here, we present Keck Cosmic Web…

astro-ph.GA2025★ 10 cited

Exploring Spatially-Resolved Metallicities, Dynamics and Outflows in Low-Mass Galaxies at

L. R. Ivey, J. Scholtz, A. L. Danhaive +18

A majority of JWST/NIRSpec/IFU studies at high redshifts to date have focused on UV-bright or massive objects, while our understanding of low-mass galaxies at early cosmic times re…

astro-ph.GA2025★ 11 cited

JADES reveals a large population of low mass black holes at high redshift

Sophia Geris, Roberto Maiolino, Yuki Isobe +24

JWST has revealed a large population of active galactic nuclei (AGN) in the distant universe, which are challenging our understanding of early massive black hole seeding and growth…

astro-ph.GA2025★ 2 cited

Shockingly Effective: Cluster Winds as Engines of Feedback in Starburst Galaxy VV 114

Justin A. Kader, Vivian U, Jeffrey A. Rich +29

We present high-resolution Keck Cosmic Web Imager (KCWI) and MUSE IFU spectroscopy of VV 114, a local infrared-luminous merger undergoing a vigorous starburst and showing evidence…

astro-ph.GA2025★ 2 cited

Clumpiness of galaxies revealed in the near-infrared with COSMOS-Web

Wilfried Mercier, Boris Sindhu Kalita, Marko Shuntov +30

Clumps in the rest-frame UV emission of galaxies have been observed for decades. Since the launch of the James Webb Space Telescope (JWST), a large population is detected in the re…

astro-ph.GA2025★ 5 cited

COSMOS Web: Morphological quenching and size-mass evolution of brightest group galaxies from z = 3.7

Ghassem Gozaliasl, Lilan Yang, Jeyhan Kartaltepe +47

We present a comprehensive study of the structural evolution of Brightest Group Galaxies (BGGs) from redshift to using the \textit{James Webb Space Telesc…

astro-ph.GA2025★ 45 cited

COSMOS2025: The COSMOS-Web galaxy catalog of photometry, morphology, redshifts, and physical parameters from JWST, HST, and ground-based imaging

Marko Shuntov, Hollis B. Akins, Louise Paquereau +55

We present COSMOS2025, the COSMOS-Web catalog of photometry, morphology, photometric redshifts and physical parameters for more than 700,000 galaxies in the Cosmic Evolution Survey…