Showing 2024 · astro-ph.GAShow all

90 papers · 2 filters

astro-ph.GA2024★ 1 cited

Not just PAH: why galaxies turn red in the Near-Infrared

Benedetta Vulcani, Tommaso Treu, Matthew Malkan +11

We measure the spectral properties of a sample of 20 galaxies at z~0.35 selected for having surprisingly red JWST/NIRCAM F200W-F444W colors. 19 galaxies were observed with JWST/NIR…

astro-ph.GA2024★ 6 cited

Overdensity of Lyman-Break Galaxy Candidates Around Hot Dust-Obscured Galaxies

Dejene Zewdie, Roberto J. Assef, Trystan Lambert +15

Hot dust-obscured galaxies (Hot DOGs), are a family of hyper-luminous, heavily obscured quasars. A number of studies have shown that these objects reside in significantly overdense…

astro-ph.GA2024★ 7 cited

Estimating Photometric Redshifts for Galaxies from the DESI Legacy Imaging Surveys with Bayesian Neural Networks Trained by DESI EDR

Xingchen Zhou, Nan Li, Hu Zou +6

We present a catalogue of photometric redshifts for galaxies from DESI Legacy Imaging Surveys, which includes billion sources covering 14,000 . The photomet…

astro-ph.GA2024★ 3 cited

Dynamic Massive Star Formation: Radio Flux Variability in UCHII Regions

A. Y. Yang, M. A. Thompson, J. S. Urquhart +7

Context: Theoretical models of early accretion during the formation process of massive stars have predicted that HII regions exhibit radio variability on timescales of decades. How…

astro-ph.GA2024★ 3 cited

Hidden in Pixels. I. Discovery of dual "little red dots" indicates excess clustering on kilo-parsec scales

Takumi S. Tanaka, John D. Silverman, Kazuhiro Shimasaku +56

``Little Red Dots'' (LRDs) are an abundant high-redshift population newly discovered by the James Webb Space Telescope (JWST) and considered to be an early growth phase of supermas…

astro-ph.GA2024★ 2 cited

ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- XIX. The origin of SiO emission

Rong Liu, Tie Liu, Izaskun Jiménez-Serra +23

The production of silicon monoxide (SiO) can be considered as a fingerprint of shock interaction. In this work, we use high-sensitivity observations of the SiO (2-1) and HCO…

astro-ph.GA2024★ 1 cited

The JCMT BISTRO Survey: The magnetised evolution of star-forming cores in the Ophiuchus Molecular Cloud interpreted using Histograms of Relative Orientation

James P. Perry, Kate Pattle, Doug Johnstone +17

The relationship between B-field orientation and density structure in molecular clouds is often assessed using the Histogram of Relative Orientations (HRO). We perform a plane-of-t…

astro-ph.GA2024★ 2 cited

Investigating the vertical distribution of the disk as a function of radial action: Results from simulations

Yunpeng Jia, Chengqun Yang, Yuqin Chen +2

Previous research has established a relationship between radial action and scale height in Galactic disks, unveiling a correlation between radial and vertical heating. This finding…

astro-ph.GA2024★ 7 cited

WALLABY Pilot Survey: Gas-Rich Galaxy Scaling Relations from Marginally-Resolved Kinematic Models

N. Deg, N. Arora, K. Spekkens +21

We present the first set of galaxy scaling relations derived from kinematic models of the Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) pilot phase observations. Com…

astro-ph.GA2024★ 1 cited

Moving Groups in the Solar Neighborhood with Gaia, APOGEE, GALAH, and LAMOST: Dynamical Effects Gather Gas and the Ensuing Star Formation Plays an Important Role in Shaping the Stellar Velocity Distributions

Xilong Liang, Suk-Jin Yoon, Jingkun Zhao

With Gaia, APOGEE, GALAH, and LAMOST data, we investigate the positional, kinematic, chemical, and age properties of nine moving groups in the solar neighborhood. We find that each…

astro-ph.GA2024★ 9 cited

Mapping the Milky Way with Gaia Bp/Rp spectra I: Systematic flux corrections and atmospheric parameters for 68 million stars

Xianhao Ye, Wenbo Wu, Carlos Allende Prieto +8

Gaia Bp/Rp spectra for over two hundred million stars have great potential for mapping metallicity across the Milky Way. We aim to construct an alternative catalog of atmospheric p…

astro-ph.GA2024★ 10 cited

The HI Mass Function of the Local Universe: Combining Measurements from HIPASS, ALFALFA and FASHI

Wenlin Ma, Hong Guo, Haojie Xu +6

We present the first HI mass function (HIMF) measurement for the recent FAST All Sky HI (FASHI) survey and the most complete measurements of HIMF in the local universe thus far. We…

astro-ph.GA2024★ 3 cited

The Milky Way atlas for linear filaments II. clump rotation versus filament orientation

Xuefang Xu, Ke Wang, Qian Gou +4

Dense clumps distributed along filaments are the immediate medium for star formation. Kinematic properties of the clumps, such as velocity gradient and angular momentum, combined w…

astro-ph.GA2024★ 3 cited

Measuring the Diffuse Interstellar Bands at 5780, 5797, and 6614 Å in Low-Resolution Spectra of Cool Stars from LAMOST

Xiao-Xiao Ma, Jian-Jun Chen, A-Li Luo +7

We attempt to measure the DIBs 5780, 5797 and 6614 in over two million low-resolution spectra of cool stars from LAMOST. Based on the DIB measurements, the correlation bet…

astro-ph.GA2024★ 1 cited

Search for young stellar objects within 4XMM-DR13 using CatBoost and SPE

Xiangyao Ma, Yanxia Zhang, Jingyi Zhang +3

Classifying and summarizing large data sets from different sky survey projects is essential for various subsequent scientific research. By combining data from 4XMM-DR13, SDSS DR18,…

astro-ph.GA2024★ 27 cited

The formation and survival of the Milky Way's oldest stellar disk

Maosheng Xiang, Hans-Walter Rix, Hang Yang +3

It remains a mystery when our Milky Way first formed a stellar disk component that survived and maintained its disk structure from subsequent galaxy mergers. We present a study of…

astro-ph.GA2024

Implications for galaxy property estimation revealed by CO luminosity-FWHM relations in local star-forming galaxies

Yi-Han Wu, Jun-Feng Wang, Xiao-Hu Li +6

This study explores a relationship between the CO luminosity-full width at half-maximum linewidth linear relation (i.e. the CO LFR) and mean galaxy property of the local star-formi…

astro-ph.GA2024

The accretion history of the Milky Way IV. Hints of recent star formation in Milky Way dwarf spheroidal galaxies

Yanbin Yang, Elisabetta Caffau, Piercarlo Bonifacio +3

Dwarf spheroidal galaxies are known to be dominated by old stellar populations. This has led to the assumption that their gas-rich progenitors lost their gas during their infall in…

astro-ph.GA2024★ 28 cited

The Dual Nature of GHZ9: Coexisting Active Galactic Nuclei and Star Formation Activity in a Remote X-ray Source at z = 10.145

Lorenzo Napolitano, Marco Castellano, Laura Pentericci +33

We present James Webb Space Telescope (JWST)/NIRSpec PRISM spectroscopic characterization of GHZ9 at z= 10.145 0.010, currently the most distant source detected by the Chandr…

astro-ph.GA2024★ 9 cited

Identifying supermassive black hole recoil in elliptical galaxies

Alexander Rawlings, Atte Keitaanranta, Max Mattero +8

We study stellar core growth in simulations of merging massive () elliptical galaxies by a supermassive black hole (SMBH) displaced by gravitatio…

astro-ph.GA2024★ 10 cited

ALMA-IMF XVIII: The assembly of a star cluster: Dense NH (1-0) kinematics in the massive G351.77 protocluster

N. A. Sandoval-Garrido, A. M. Stutz, R. H. Álvarez-Gutiérrez +20

ALMA-IMF observed 15 massive protoclusters capturing multiple spectral lines and the continuum emission. We focus on the G351.77 protocluster ( 2500 M, estimated fr…

astro-ph.GA2024★ 18 cited

Exploring the interaction between the MW and LMC with a large sample of blue horizontal branch stars from the DESI survey

Amanda Byström, Sergey E. Koposov, Sophia Lilleengen +42

The Large Magellanic Cloud (LMC) is a Milky Way (MW) satellite that is massive enough to gravitationally attract the MW disc and inner halo, causing significant motion of the inner…

astro-ph.GA2024★ 6 cited

The warm-hot intergalactic medium in inter-cluster filaments -- A forecast for HUBS observations based on eRASS1 superclusters

Yuanyuan Zhao, Haiguang Xu, Ang Liu +8

Cosmological simulations indicate that nearly half of the baryons in the nearby Universe are in the warm-hot intergalactic medium (WHIM) phase, and about a half them reside in cosm…

astro-ph.GA2024

Merging Signatures in an Offset Lyman Continuum Emitter at Redshift 3.8

Fang-Ting Yuan, Zhen-Ya Zheng, Chunyan Jiang +3

Lyman continuum (LyC) emitters at provide critical samples for studying the contribution of galaxies to the ionizing background in the Epoch of Reionization. We collect a sam…