output
19922026
most citedThe Sloan Digital Sky Survey: Technical Summary

10.4k citations

Showing 2019 · astro-ph.GAShow all

84 papers · 2 filters

astro-ph.GA2019★ 75 cited

Metallicity and -element Abundance Gradients along the Sagittarius Stream as Seen by APOGEE

Christian R. Hayes, Steven R. Majewski, Sten Hasselquist +27

Using 3D positions and kinematics of stars relative to the Sagittarius (Sgr) orbital plane and angular momentum, we identify 166 Sgr stream members observed by the Apache Point Obs…

astro-ph.GA2019★ 7 cited

Setting the scene for BUFFALO: A study of the matter distribution in the HFF galaxy cluster MACS J0416.1-2403 and its parallel field

Elizabeth J. Gonzalez, Martín Chalela, Mathilde Jauzac +11

In the context of the BUFFALO (Beyond Ultra-deep Frontier Fields And Legacy Observations) survey, we present a new analysis of the merging galaxy cluster MACS\,J0416.1-2403 ($z = 0…

astro-ph.GA2019★ 64 cited

Elemental Abundances in M31: The Kinematics and Chemical Evolution of Dwarf Spheroidal Satellite Galaxies

Evan N. Kirby, Karoline M. Gilbert, Ivanna Escala +4

We present deep spectroscopy from Keck/DEIMOS of Andromeda I, III, V, VII, and X, all of which are dwarf spheroidal satellites of M31. The sample includes 256 spectroscopic members…

astro-ph.GA2019★ 203 cited

Milky Way Satellite Census. II. Galaxy--Halo Connection Constraints Including the Impact of the Large Magellanic Cloud

E. O. Nadler, R. H. Wechsler, K. Bechtol +63

The population of Milky Way (MW) satellites contains the faintest known galaxies and thus provides essential insight into galaxy formation and dark matter microphysics. Here we com…

astro-ph.GA2019★ 175 cited

Milky Way Satellite Census. I. The Observational Selection Function for Milky Way Satellites in DES Y3 and Pan-STARRS DR1

A. Drlica-Wagner, K. Bechtol, S. Mau +55

We report the results of a systematic search for ultra-faint Milky Way satellite galaxies using data from the Dark Energy Survey (DES) and Pan-STARRS1 (PS1). Together, DES and PS1…

astro-ph.GA2019★ 95 cited

Two Ultra-Faint Milky Way Stellar Systems Discovered in Early Data from the DECam Local Volume Exploration Survey

S. Mau, W. Cerny, A. B. Pace +56

We report the discovery of two ultra-faint stellar systems found in early data from the DECam Local Volume Exploration survey (DELVE). The first system, Centaurus I (DELVE J1238-40…

astro-ph.GA2019★ 1.5k cited

The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra

Romina Ahumada, Carlos Allende Prieto, Andres Almeida +310

This paper documents the sixteenth data release (DR16) from the Sloan Digital Sky Surveys; the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of…

astro-ph.GA2019★ 57 cited

Constraining the Milky Way Mass Profile with Phase-Space Distribution of Satellite Galaxies

Zhao-Zhou Li, Yong-Zhong Qian, Jiaxin Han +3

We estimate the Milky Way (MW) halo properties using satellite kinematic data including the latest measurements from Gaia DR2. With a simulation-based 6D phase-space distribution f…

astro-ph.GA2019★ 49 cited

Star Formation in Isolated Dwarf Galaxies Hosting Tidal Debris: Extending the Dwarf-Dwarf Merger Sequence

Erin Kado-Fong, Jenny E. Greene, Johnny P. Greco +4

Like massive galaxies, dwarf galaxies are expected to undergo major mergers with other dwarfs. However, the end state of these mergers and the role that merging plays in regulating…

astro-ph.GA2019★ 57 cited

The Growth of Brightest Cluster Galaxies and Intracluster Light Over the Past Ten Billion Years

Tahlia DeMaio, Anthony H. Gonzalez, Ann Zabludoff +9

We constrain the evolution of the brightest cluster galaxy plus intracluster light (BCG+ICL) using an ensemble of 42 galaxy groups and clusters that span redshifts of z = 0.05-1.75…

astro-ph.GA2019★ 40 cited

The Dark Matter Distributions in Low-Mass Disk Galaxies. II. The Inner Density Profiles

Nicole C. Relatores, Andrew B. Newman, Joshua D. Simon +8

Dark matter-only simulations predict that dark matter halos have steep, cuspy inner density profiles, while observations of dwarf galaxies find a range of inner slopes that are oft…

astro-ph.GA2019★ 11 cited

The Initial Mass Function in the Extended Ultraviolet Disk of M83

Sarah M. Bruzzese, David A. Thilker, Gerhardt Meurer +7

Using Hubble Space Telescope ACS/WFC data we present the photometry and spatial distribution of resolved stellar populations of four fields within the extended ultraviolet disk (XU…

astro-ph.GA2019★ 292 cited

The lifecycle of molecular clouds in nearby star-forming disc galaxies

Mélanie Chevance, J. M. Diederik Kruijssen, Alexander P. S. Hygate +29

It remains a major challenge to derive a theory of cloud-scale ( pc) star formation and feedback, describing how galaxies convert gas into stars as a function of the g…

astro-ph.GA2019★ 40 cited

The headlight cloud in NGC 628: An extreme giant molecular cloud in a typical galaxy disk

Cinthya N. Herrera, Jérôme Pety, Annie Hughes +25

Cloud-scale surveys of molecular gas reveal the link between molecular clouds properties and star formation (SF) across a range of galactic environments. Cloud populations in galax…

astro-ph.GA2019★ 52 cited

A Census of Sub-kiloparsec Resolution Metallicity Gradients in Star-forming Galaxies at Cosmic Noon from HST Slitless Spectroscopy

Xin Wang, Tucker A. Jones, Tommaso Treu +12

We present hitherto the largest sample of gas-phase metallicity radial gradients measured at sub-kiloparsec resolution in star-forming galaxies in the redshift range of $z\in[1.2,…

astro-ph.GA2019★ 73 cited

Birds of a Feather? Magellan/IMACS Spectroscopy of the Ultra-Faint Satellites Grus II, Tucana IV, and Tucana V

J. D. Simon, T. S. Li, D. Erkal +54

We present Magellan/IMACS spectroscopy of three recently discovered ultra-faint Milky Way satellites, Grus II, Tucana IV, and Tucana V. We measure systemic velocities of V_hel = -1…

astro-ph.GA2019★ 62 cited

The contribution from stars stripped in binaries to cosmic reionization of hydrogen and helium

Y. Gotberg, S. E. de Mink, M. McQuinn +3

Massive stars are often found in binary systems and it has been argued that binary products boost the ionizing radiation of stellar populations. Accurate predictions for binary pro…

astro-ph.GA2019★ 15 cited

The Properties of Radio and Mid-infrared Detected Galaxies and the Effect of Environment on the Co-evolution of AGN and Star Formation at

Lu Shen, Brian C. Lemaux, Lori M. Lubin +10

In this study we investigate 179 radio-IR galaxies drawn from a sample of spectroscopically-confirmed galaxies that are detected in radio and mid-infrared (MIR) in the redshift ran…

astro-ph.GA2019★ 80 cited

The Gas-Star Formation Cycle in Nearby Star-Forming Galaxies I. Assessment of Multi-scale Variations

Eva Schinnerer, Annie Hughes, Adam Leroy +21

The processes regulating star formation in galaxies are thought to act across a hierarchy of spatial scales. To connect extragalactic star formation relations from global and kpc-s…

astro-ph.GA2019★ 22 cited

Mapping electron temperature variations across a spiral arm in NGC 1672

I-Ting Ho, Kathryn Kreckel, Sharon E. Meidt +17

We report one of the first extragalactic observations of electron temperature variations across a spiral arm. Using MUSE mosaic observations of the nearby galaxy NGC 1672, we measu…

astro-ph.GA2019★ 168 cited

Mapping metallicity variations across nearby galaxy disks

K. Kreckel, I. -T. Ho, G. A. Blanc +21

The distribution of metals within a galaxy traces the baryon cycle and the buildup of galactic disks, but the detailed gas phase metallicity distribution remains poorly sampled. We…

astro-ph.GA2019★ 21 cited

Spectroscopy of the Young Stellar Association Price-Whelan 1: Origin in the Magellanic Leading Arm and Constraints on the Milky Way Hot Halo

David L. Nidever, Adrian M. Price-Whelan, Yumi Choi +7

We report spectroscopic measurements of stars in the recently discovered young stellar association Price-Whelan 1 (PW 1), which was found in the vicinity of the Leading Arm (LA) of…

astro-ph.GA2019★ 10 cited

HSC-XD 52: An X-ray detected AGN in a low-mass galaxy at

Goni Halevi, Andy Goulding, Jenny Greene +8

The properties of low-mass galaxies hosting central black holes provide clues about the formation and evolution of the progenitors of supermassive black holes. In this letter, we p…

astro-ph.GA2019★ 70 cited

MUSEQuBES: Calibrating the redshifts of Ly α emitters using stacked circumgalactic medium absorption profiles

Sowgat Muzahid, Joop Schaye, Raffaella Anna Marino +17

Lyman (Ly) emission lines are typically found to be redshifted with respect to the systemic redshifts of galaxies, likely due to resonant scattering of Ly photons. Here w…