activity
20072026
most citedThe Apache Point Observatory Galactic Evolution Experiment (APOGEE)

1.8k citations · 15.5k across the 133 of their papers we have counts for

collaborators

133 papers

astro-ph.GA2026

The Open Cluster Chemical Abundances and Mapping Survey XI. First Gradients from SDSS/MWM BOSS Determined Clusters

Jonah M. Otto, Peter M. Frinchaboy, John Donor +13

The Milky Way Mapper program in the fifth generation of the Sloan Digital Sky Survey (SDSS-V/MWM) has observed millions of stars, thousands of them in open clusters. The Open Clust…

astro-ph.GA2026

The Twentieth Data Release of the Sloan Digital Sky Survey: First All-Sky BOSS Spectra, eROSITA-SDSS-V Mapper Coordinated Observations, and a Preview of the Local Volume Mapper

SDSS Collaboration, Mojgan Aghakhanloo, David Aguilar +273

This paper presents the twentieth data release (DR20) from the Sloan Digital Sky Survey, the third data release of its fifth generation (SDSS-V). SDSS-V is a panoptic spectroscopy…

astro-ph.GA2026

OCCAM X. Neutron Capture Abundances with Keck/HIRES & Magellan/MIKE

Natalie R. Myers, Peter M. Frinchaboy, Henrique Reggiani +10

The chemistry of stars provides powerful insight into the history of the Milky Way. With multiple large-sky spectroscopic surveys that are currently available, using chemistry as a…

astro-ph.GA2026

The Chemical Homogeneity of Single-Lined Spectroscopic Binaries in Open Clusters

Amaya Sinha, Gail Zasowski, Natalie R. Myers +16

Using SDSS-V DR19 Milky Way Mapper APOGEE data, we measure the impact that close binarity has on surface chemistry across the Hertzsprung-Russell diagram in a broad set of abundanc…

astro-ph.GA2025

Age, Chemistry, and Kinematics of the Inner Galaxy Revealed by MUSE

Zixian Wang, Michael R. Hayden, Sanjib Sharma +3

The bar/bulge and inner disk are fundamental building blocks of the Milky Way, containing a large fraction of its stellar mass. However, stars in these regions are faint, crowded,…

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

The Open Cluster Chemical Abundances and Mapping Survey: VIII. Galactic Chemical Gradient and Azimuthal Analysis from SDSS/MWM DR19

Jonah M. Otto, Peter M Frinchaboy, Natalie R. Myers +16

The Open Cluster Chemical Abundances and Mapping (OCCAM) survey seeks to curate a large, comprehensive, uniform dataset of open clusters and member stars to constrain key Galactic…

astro-ph.GA2025★ 8 cited

The Nineteenth Data Release of the Sloan Digital Sky Survey

SDSS Collaboration, Gautham Adamane Pallathadka, Mojgan Aghakhanloo +210

Mapping the local and distant Universe is key to our understanding of it. For decades, the Sloan Digital Sky Survey (SDSS) has made a concerted effort to map millions of celestial…

astro-ph.IM2025★ 3 cited

Sloan Digital Sky Survey-V: Pioneering Panoptic Spectroscopy

Juna A. Kollmeier, Hans-Walter Rix, Conny Aerts +217

The Sloan Digital Sky Survey-V (SDSS-V) is pioneering panoptic spectroscopy: it is the first all-sky, multi-epoch, optical-to-infrared spectroscopic survey. SDSS-V is mapping the s…

astro-ph.GA2025

Unveiling a young thick disk in the Milky Way

Jianhui Lian, Min Du, Shuai Lu +5

The thickness of a galaxy's disk provides a valuable probe of its formation and evolution history. Observations of the Milky Way and local galaxies have revealed an ubiquitous disk…

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

A Comprehensive Study of Open Cluster Chemical Homogeneity using APOGEE and Milky Way Mapper Abundances

Amaya Sinha, Gail Zasowski, Peter Frinchaboy +4

Stars in an open cluster are assumed to have formed from a broadly homogeneous distribution of gas, implying that they should be chemically homogeneous. Quantifying the level to wh…

astro-ph.GA2024★ 2 cited

The size of the Milky Way galaxy

Jianhui Lian, Gail Zasowski, Bingqiu Chen +4

The size of a galaxy is one of the fundamental parameters that reflects its growth and assembly history. Traditionally, the size of the Milky Way has been characterized by the scal…

astro-ph.GA2024★ 1 cited

The Extremely Metal Rich Knot of Stars at the Heart of the Galaxy

Hans-Walter Rix, Vedant Chandra, Gail Zasowski +15

We show with Gaia XP spectroscopy that extremely metal-rich stars in the Milky Way (EMR; ) - but only those - are largely confined to a tight "knot" at the center…

astro-ph.GA2024

A perspective on the Milky Way Bulge-Bar as seen from the neutron-capture elements Cerium and Neodymium with APOGEE

J. V. Sales-Silva, K. Cunha, V. V. Smith +28

This study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of 2000 stars in the Galact…

astro-ph.IM2023

SDSS-IV from 2014 to 2016: A Detailed Demographic Comparison over Three Years

Amy M. Jones, Rachael L. Beaton, Brian A. Cherinka +24

The Sloan Digital Sky Survey (SDSS) is one of the largest international astronomy organizations. We present demographic data based on surveys of its members from 2014, 2015 and 201…

astro-ph.SR2023★ 8 cited

Chemical abundances of the young inner-disk open cluster NGC 6705 observed by APOGEE: sodium-rich and not -enhanced

V. Loaiza-Tacuri, K. Cunha, D. Souto +19

Previous results in the literature have found the young inner-disk open cluster NGC 6705 to be mildly -enhanced. We examined this possibility via an independent chemical abundan…

astro-ph.GA2023★ 1 cited

Catalog of Integrated-Light Star Cluster Light Curves in TESS

Tobin M. Wainer, Gail Zasowski, Joshua Pepper +10

We present the first integrated light, TESS-based light curves for star clusters in the Milky Way, Small Magellanic Cloud, and Large Magellanic Cloud. We explore the information en…

astro-ph.GA2023

Roman Early-Definition Astrophysics Survey Opportunity: Galactic Roman Infrared Plane Survey (GRIPS)

Roberta Paladini, Catherine Zucker, Robert Benjamin +67

A wide-field near-infrared survey of the Galactic disk and bulge/bar(s) is supported by a large representation of the community of Galactic astronomers. The combination of sensitiv…

astro-ph.GA2023★ 47 cited

Unusual integrated metallicity profile of our Milky Way

Jianhui Lian, Maria Bergemann, Annalisa Pillepich +2

The heavy element abundance profiles in galaxies place stringent constraint on galaxy growth and assembly history. Low-redshift galaxies generally have a negative metallicity gradi…

astro-ph.GA2023★ 8 cited

The Chemodynamics of the Stellar Populations in M31 from APOGEE Integrated Light Spectroscopy

Benjamin J. Gibson, Gail Zasowski, Anil Seth +8

We present analysis of nearly 1,000 near-infrared, integrated light spectra from APOGEE in the inner 7 kpc of M31. We utilize full spectrum fitting with A-LIST simple stellar…

astro-ph.GA2023★ 18 cited

Gas metallicity distributions in SDSS-IV MaNGA galaxies: what drives gradients and local trends?

Nicholas Fraser Boardman, Vivienne Wild, Tim Heckman +4

The gas metallicity distributions across individual galaxies and across galaxy samples can teach us much about how galaxies evolve. Massive galaxies typically possess negative meta…

astro-ph.GA2023★ 282 cited

The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V

Andrés Almeida, Scott F. Anderson, Maria Argudo-Fernández +151

The eighteenth data release of the Sloan Digital Sky Surveys (SDSS) is the first one for SDSS-V, the fifth generation of the survey. SDSS-V comprises three primary scientific progr…

astro-ph.GA2022★ 72 cited

The Open Cluster Chemical Abundances and Mapping Survey: VI. Galactic Chemical Gradient Analysis from APOGEE DR17

Natalie Myers, John Donor, Taylor Spoo +19

The goal of the Open Cluster Chemical Abundances and Mapping (OCCAM) survey is to constrain key Galactic dynamic and chemical evolution parameters by the construction and analysis…