activity
20142025
most citedBinary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions

3.7k citations · 9.5k across the 119 of their papers we have counts for

collaborators

115 papers

astro-ph.GA2025★ 6 cited

CAPOS: The bulge Cluster APOGEE Survey VI. Characterizing multiple stellar populations and chemical abundances in the bulge globular cluster NGC 6569

Nicolás Barrera, Sandro Villanova, Doug Geisler +2

Context. The CAPOS project aims to obtain accurate mean abundances and radial velocities for many elements, and it explores the multiple population (MP) phenomenon in Galactic bulg…

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.SR2025

Atmospheric parameters and chemical abundances of young stars with APOGEE. I. Orion star-forming region

Ricardo López-Valdivia, Lucía Adame, Carlos G. Román-Zúñiga +19

We derive atmospheric parameters and chemical abundances in young G-, K-, and M-type stars (temperatures between 6500 and 3100 K) using infrared APOGEE-2 spectra. Atmospheric param…

astro-ph.GA2025★ 6 cited

Mapping the Distant and Metal-Poor Milky Way with SDSS-V

Vedant Chandra, Phillip A. Cargile, Alexander P. Ji +28

The fifth-generation Sloan Digital Sky Survey (SDSS-V) is conducting the first all-sky low-resolution spectroscopic survey of the Milky Way's stellar halo. We describe the stellar…

astro-ph.GA2025

The VISCACHA survey XIV. Chemical evolution history of the SMC: The Southern Bridge Clusters

Sasi Saroon, B. Dias, T. Tsujimotto +18

The chemical evolution history of the Small Magellanic Cloud (SMC) is complex and is best understood through a comprehensive analysis of star clusters across its various regions. T…

astro-ph.SR2025

Abundances of P, S, and K in 58 bulge spheroid stars from APOGEE

B. Barbuy, H. Ernandes, A. C. S. Friaça +25

We have previously studied several elements in 58 selected bulge spheroid stars, based on spectral lines in the H-band. We now derive the abundances of the less-studied elements ph…

astro-ph.SR2025

Fluorine production in He-burning regions of massive stars during cosmic history

Sophie Tsiatsiou, Georges Meynet, Eoin Farrell +11

The origin of fluorine is still a debated question. AGB stars synthesise this element and likely contribute significantly to its synthesis in the present-day Universe. However, it…

astro-ph.SR2024

Examining the brightness variability, accretion disk, and evolutionary stage of the binary OGLE-LMC-ECL-14413

R. E. Mennickent, G. Djurašević, J. A. Rosales +6

Our study aims to elucidate both short-term and long-term variations in the light curve of the eclipsing system OGLE-LMC-ECL-14413, with a particular focus on the unusual reversals…

astro-ph.GA2024★ 1 cited

SDSS-IV MaNGA: Stellar rotational support in disk galaxies vs. central surface density and stellar population age

Xiaohan Wang, Yifei Luo, S. M. Faber +10

We investigate how the stellar rotational support changes as a function of spatially resolved stellar population age () and relative central stellar surface density ($…

astro-ph.SR2024

Atmospheric parameters and chemical abundances within 100 pc. A sample of G, K, and M main-sequence stars

Ricardo López-Valdivia, Lucía Adame, Eduardo Zagala Lagunas +9

To date, we have access to enormous inventories of stellar spectra that allow the extraction of atmospheric parameters and chemical abundances essential in stellar studies. However…

astro-ph.GA2024★ 38 cited

The VISTA Variables in the Vía Láctea eXtended (VVVX) ESO public survey: Completion of the observations and legacy

R. K. Saito, M. Hempel, J. Alonso-García +143

The ESO public survey VISTA Variables in the Vía Láctea (VVV) surveyed the inner Galactic bulge and the adjacent southern Galactic disk from . Upon its conclusion, the c…

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★ 24 cited

SDSS-V Local Volume Mapper (LVM): A Glimpse into Orion

K. Kreckel, O. V. Egorov, E. Egorova +37

The Orion Molecular Cloud complex, one of the nearest (D = 406 pc) and most extensively studied massive star-forming regions, is ideal for constraining the physics of stellar feedb…

astro-ph.GA2024★ 2 cited

Carbon- and Oxygen-rich stars in MaStar: identification and classification

Lewis Hill, Claudia Maraston, Daniel Thomas +5

Carbon- and Oxygen-rich stars populating the Thermally-Pulsing Asymptotic Giant Branch (TP-AGB) phase of stellar evolution are relevant contributors to the spectra of ~1 Gyr old po…

astro-ph.GA2024

Where do they come from? Identification of globular cluster escaped stars

Cheng Xu, Baitian Tang, Chengyuan Li +5

Globular clusters (GCs), as old as our Galaxy, constantly lose their members to the field as they cross through the Milky Way (MW). These GC escaped stars (or escapees) are suggest…

astro-ph.SR2024★ 3 cited

Near-infrared spectroscopic characterisation of Gaia ultra-cool dwarf candidates; Spectral types and peculiarities

T. Ravinet, C. Reylé, N. Lagarde +10

Context: The local census of very low-mass stars and brown dwarfs is crucial to improving our understanding of the stellar-substellar transition and their formation history. These…

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.GA2023

The globular cluster VVV CL002 falling down to the hazardous Galactic centre

D. Minniti, N. Matsunaga, J. G. Fernandez-Trincado +15

Context. The Galactic centre is hazardous for stellar clusters because of the strong tidal force. Supposedly, many clusters were destroyed and contributed stars to the crowded stel…

astro-ph.GA2023

CAPOS: The bulge Cluster APOgee Survey IV. Elemental Abundances of the bulge globular cluster NGC 6558

Danilo González-Díaz, José G. Fernández-Trincado, Sandro Villanova +12

This study presents the results concerning six red giant stars members of the globular cluster NGC 6558. Our analysis utilized high-resolution near-infrared spectra obtained throug…

astro-ph.GA2023

On the identification of N-rich metal-poor field stars with future China space station telescope

Jiajun Zhang, Baitian Tang, Jiang Chang +6

During the long term evolution of globular clusters (GCs), a part of member stars are lost to the field. The recently found nitrogen-rich (N-rich) metal-poor field stars are promis…

astro-ph.SR2023★ 19 cited

Stellar Characterization and Radius Inflation of Hyades M Dwarf Stars From the APOGEE Survey

Fábio Wanderley, Katia Cunha, Diogo Souto +23

We present a spectroscopic analysis of a sample of 48 M dwarf stars () from the Hyades open cluster using high-resolution H-band spectra from the…

astro-ph.GA2023★ 1 cited

Multiple Populations in Low-mass Globular Clusters: Eridanus

Yue Wang, Baitian Tang, Chengyuan Li +5

Multiple populations (MPs), characterized by variations in light elemental abundances, have been found in stellar clusters in the Milky Way, Magellanic Clouds, as well as several o…

astro-ph.GA2022★ 15 cited

Stellar Properties for a Comprehensive Collection of Star Forming Regions in the SDSS APOGEE-2 Survey

Carlos G. Román-Zúñiga, Marina Kounkel, Jesús Hernández +25

The Sloan Digital Sky Survey IV (SDSS-IV) APOGEE-2 primary science goal was to observe red giant stars throughout the Galaxy to study its dynamics, morphology, and chemical evoluti…

astro-ph.SR2022★ 4 cited

Pre-main Sequence Brackett Emitters in the APOGEE DR17 Catalog: Line Strengths and Physical Properties of Accretion Columns

Hunter Campbell, Elliott Khilfeh, Kevin R. Covey +21

Very young (t 10 Myrs) stars possess strong magnetic fields that channel ionized gas from the interiors of their circumstellar discs to the surface of the star. Upon imp…