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19932026
most citedThe Seventh Data Release of the Sloan Digital Sky Survey

5.4k citations

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374 papers · 1 filter

astro-ph.GA2026

Mapping the z>=5 SiIV Column Density Distribution onto the Galaxy Stellar Mass Function Using the Cumulative Absorption Cross Section

Kristian Finlator, Sam Patterson, Nora Nava +4

Efforts to constrain directly the activity in low-mass galaxies confront sensitivity limits even in the JWST era. Metal absorbers offer a complementary probe and are easier to dete…

astro-ph.GA2026

Galaxy Proximate Damped Lyman-Alpha Systems and HI Reionization Topology in TECHNICOLOR DAWN

Maya Steen, Kristian Finlator, Samir Kušmić +1

Recent observations from the James Webb Space Telescope (JWST) have revealed proximate damped Lyman- systems (PDLAs) in the foreground of high redshift galaxies (), whi…

astro-ph.GA2026

SDSS-V LVM: Verifying what, and where, the 'Galactic Center' Lobe is

K. Kreckel, O. V. Egorov, N. Drory +23

The so-called 'Galactic Center' Lobe (GCL) is an extended (~1 deg) radio continuum feature situated above the Galactic Plane, for which the literature contains varying claims about…

astro-ph.GA2026★ 1 cited

SDSS-V LVM: A spatially resolved study of the physical conditions and the chemical abundance discrepancy in the Lagoon Nebula (M 8)

Amrita Singh, Guillermo A. Blanc, Nimisha Kumari +19

The abundance discrepancy problem refers to the systematic differences observed between chemical abundances derived from collisionally excited lines (CELs) and recombination lines…

astro-ph.GA2026

Chemical radial gradients for the bulge-bar stellar populations from the APOGEE survey

J. V. Sales-Silva, K. Cunha, V. V. Smith +20

The Milky Way bulge-bar is composed of multiple populations. Using chemical and kinematical planes, we segregate six populations in a bulge-bar sample observed by the APOGEE survey…

astro-ph.GA2026

Initial Investigations of the Outskirts of XLSSC 122

Eleanore. B. Todd, Jon. P. Willis, Rebecca. E. A. Canning +7

We investigate the redshift 1.98 galaxy cluster XLSSC 122 using the Hubble Space Telescope (HST) from the core of the cluster out to 3 Mpc, a scale equivalent to 10 times the R500…

astro-ph.GA2025★ 3 cited

SDSS-V LVM: Resolving Physical Conditions in the Trifid Nebula

Natascha Sattler, J. Eduardo Méndez-Delgado, Kathryn Kreckel +18

The chemical abundance of the interstellar medium sets the initial conditions for star formation and provides a probe of chemical galaxy evolution models. However, unresolved inhom…

astro-ph.GA2025★ 1 cited

Spatial-Kinematic Absorption Models of the Circumgalactic Medium. I. Structures, Orientations, and Kinematics

Christopher W. Churchill

In this two-paper series, we present a straightforward mathematical model for synthesizing quasar absorption line profiles from sight lines through idealized, spatial-kinematic mod…

astro-ph.GA2025★ 2 cited

Spatial-Kinematic Absorption Models of the Circumgalactic Medium. II. Ionized Gas Phases and Absorption Lines

Christopher W. Churchill

In this two-paper series, we present a straightforward mathematical model for synthesizing quasar absorption line profiles from sight lines through idealized, spatial-kinematic mod…

astro-ph.GA2025

The chemodynamical memory of a major merger in a NIHAO-UHD Milky Way analogue -- I. A golden thread through time and space

Sven Buder, Tobias Buck, Ása Skúladóttir +3

Understanding how past major mergers shaped the Milky Way's present-day structure is a key goal of Galactic archaeology. The Galaxy's chemical and dynamical structure retains the i…

astro-ph.GA2025

SDSS-V Black Hole Mapper: The Index Diagram as a tool to disentangle the influence of the Host Galaxy in Quasar spectra

C. A. Negrete, R. Sandoval-Orozco, H. Ibarra-Medel +32

We revisit the Quasar Main Sequence (QMS) by investigating the impact of the stellar component from the host galaxy (HG) on the emission line spectra of the active galactic nuclei…

astro-ph.GA2025★ 1 cited

The large-scale kinematics of young stars in the Milky Way disc: first results from SDSS-V

Eleonora Zari, Jaime Villaseñor, Marina Kounkel +17

We present a first large-scale kinematic map of 50,000 young OB stars ( K), based on BOSS spectroscopy from the Milky Way Mapper OB program in the on…

astro-ph.GA2025★ 4 cited

SDSS-V Local Volume Mapper (LVM): Revealing the Structure of the Rosette Nebula

Mónica A. Villa-Durango, Jorge Barrera-Ballesteros, Carlos G. Román-Zúñiga +19

The Rosette Nebula is a well-known H II region shaped by the interaction of gas with the OB stars of the NGC 2244 stellar association. Located within the remnant of a giant molecul…

astro-ph.GA2025★ 6 cited

A Galactic Self-Portrait: Density Structure and Integrated Properties of the Milky Way Disk

Julie Imig, Jon A. Holtzman, Gail Zasowski +23

The evolution history of the Milky Way disk is imprinted in the ages, positions, and chemical compositions of individual stars. In this study, we derive the intrinsic density distr…

astro-ph.GA2025★ 1 cited

Reconstructing galactic feedback history via the Lyman- forest with Habitable Worlds Observatory

Megan T. Tillman, Joseph N. Burchett, Blakesley Burkhart +2

Recent studies have focused on the low- Ly forest as a potential constraint on galactic feedback, as different AGN and stellar feedback models in hydrodynamic simulations pro…

astro-ph.GA2025★ 4 cited

Introducing the Descriptive Parametric Model: Gaseous Profiles for Galaxies, Groups, and Clusters

Benjamin D. Oppenheimer, G. Mark Voit, Yannick M. Bahé +14

We develop and present the Descriptive Parametric Model (DPM), a tool for generating profiles of gaseous halos (pressure, electron density, and metallicity) as functions of radius,…

astro-ph.GA2024★ 1 cited

Towards Understanding the Milky Way's Typicality: Assessing the Chemodynamics of M31's Bulge & Bar, Thick & Thin Discs

Benjamin J. Gibson, Gail Zasowski, Anil Seth +6

We describe a novel framework to model galaxy spectra with two cospatial stellar populations, such as may represent a bulge & bar or thick & thin disc, and apply it to APOGEE spect…

astro-ph.GA2024★ 12 cited

The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV BAL Acceleration in the Quasar SBS 1408+544

Robert Wheatley, Catherine J. Grier, Patrick B. Hall +20

We present the results of an investigation of a highly variable CIV broad absorption-line feature in the quasar SBS 1408+544 (z=2.337) that shows a significant shift in velocity ov…

astro-ph.GA2024★ 4 cited

The COS-Holes Survey: Connecting Galaxy Black Hole Mass with the State of the CGM

Samantha L. Garza, Jessica K. Werk, Benjamin D. Oppenheimer +9

We present an analysis of \textit{HST}/COS/G160M observations of CIV in the inner circumgalactic medium (CGM) of a novel sample of eight z0, LL galaxies, p…

astro-ph.GA2024

Signatures of AGN feedback modes: A Green Bean Galaxy with 150 kpc jet-induced radio emission

Kelly N. Sanderson, Anna D. Kapińska, Moire K. M. Prescott +4

Jetted Active Galactic Nuclei (AGN) hosting extended photoionized nebulae provide us with a unique view of the timescales associated with AGN activity. Here, we present a new Green…

astro-ph.GA2024★ 12 cited

The Timescales of Star Cluster Emergence: The Case of NGC 4449

Timothy McQuaid, Daniela Calzetti, Sean T. Linden +7

We survey the young star cluster population in the dwarf galaxy NGC4449 with the goal of investigating how stellar feedback may depend on the clusters' properties. Using Ultraviole…

astro-ph.GA2024★ 100 cited

The JWST-PRIMAL Legacy Survey. A JWST/NIRSpec reference sample for the physical properties and Lyman- absorption and emission of galaxies at

K. E. Heintz, G. B. Brammer, D. Watson +45

One of the surprising early findings with JWST has been the discovery of a strong "roll-over" or a softening of the absorption edge of Ly in a large number of galaxies at ($z\gt…

astro-ph.GA2023★ 1 cited

Neutral Hydrogen Mass in Galaxies Estimated via Optical Spectroscopy

Dmitry Bizyaev

We propose to employ emission line luminosities obtained via optical spectroscopy to estimate the content of neutral hydrogen (HI) in galaxies. We use the optical spectroscopy data…

astro-ph.GA2023★ 4 cited

Searching for [CII] Emission from the First Sample of OI Absorption-Associated Galaxies with ALMA

Yunjing Wu, Zheng Cai, Jianan Li +13

We report the first statistical analyses of [CII] and dust continuum observations in six strong OI absorber fields at the end of the reionization epoch obtained by the Atacama Larg…