APOKASC-3: The Third Joint Spectroscopic and Asteroseismic Catalog for Evolved Stars in the Kepler Fields

Abstract In the third APOKASC catalog, we present data for the complete sample of 15,808 evolved stars with APOGEE spectroscopic parameters and Kepler asteroseismology. We used 10 independent asteroseismic analysis techniques and anchor our system on fundamental radii derived from Gaia L and spectroscopic T eff . We provide evolutionary state, asteroseismic surface gravity, mass, radius, age, and the data used to derive them for 12,418 stars. This includes 10,036 exceptionally precise measurements, with median fractional uncertainties in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>ν</mml:mi> </mml:mrow> <mml:mrow> <mml:mi mathvariant="normal">max</mml:mi> </mml:mrow> </mml:msub> </mml:math> , Δ ν , mass, radius, and age of 0.6%, 0.6%, 3.8%, 1.8%, and 11.1%, respectively. We provide more limited data for 1624 additional stars that either have lower-quality data or are outside of our primary calibration domain. Using lower red giant branch (RGB) stars, we find a median age for the chemical thick disk of 9.14 ± 0.05(ran) ± 0.9(sys) Gyr with an age dispersion of 1.1 Gyr, consistent with our error model. We calibrate our red clump (RC) mass loss to derive an age consistent with the lower RGB and provide asymptotic GB and RGB ages for luminous stars. We also find a sharp upper-age boundary in the chemical thin disk. We find that scaling relations are precise and accurate on the lower RGB and RC, but they become more model dependent for more luminous giants and break down at the tip of the RGB. We recommend the use of multiple methods, calibration to a fundamental scale, and the use of stellar models to interpret frequency spacings.

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Publication Details

Journal
The Astrophysical Journal Supplement Series
Published
2025-02-01
DOI
https://doi.org/10.3847/1538-4365/ad9fef
Citations
49
Primary Topic
Stellar, planetary, and galactic studies
Type
article
Field-Weighted Citation Impact
56.58

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article

APOKASC-3: The Third Joint Spectroscopic and Asteroseismic Catalog for Evolved Stars in the Kepler Fields

Verne V. Smith, Timothy C. Beers, Jon A. Holtzman, Matthew Shetrone et al.
49 citations
The Astrophysical Journal Supplement Series
Stellar, planetary, and galactic studies
56.58
article

APOKASC-3: The Third Joint Spectroscopic and Asteroseismic Catalog for Evolved Stars in the Kepler Fields

Verne V. Smith, Timothy C. Beers, Jon A. Holtzman, Matthew Shetrone, Szabolcs Mészáros, S. Mathur, B. Mosser, Y. Elsworth, Keaton J. Bell, Taylor Spoo, Hans‐Walter Rix, Dennis Stello, T. Kallinger, Peter M. Frinchaboy, Daniel Huber, D. Godoy-Rivera, E. Corsaro, L. Girardi, Â. R. G. Santos, Jamie Tayar, Claudia Reyes, W. J. Chaplin, Rachel A Patton, Henrik Jönsson, Kátia Cunha, Aldo Serenelli, Ji Wang, Marc H. Pinsonneault, L. Bugnet, Joel Zinn, Kaili Cao, S. Hekker, Marc Hon, P. G. Beck, Mathieu Vrard, Sarbani Basu, Keivan G. Stassun, Bastien Liagre, R. A. García, Jennifer A. Johnson, P. Gaulme
article en
49 citations

Abstract

Abstract In the third APOKASC catalog, we present data for the complete sample of 15,808 evolved stars with APOGEE spectroscopic parameters and Kepler asteroseismology. We used 10 independent asteroseismic analysis techniques and anchor our system on fundamental radii derived from Gaia L and spectroscopic T eff . We provide evolutionary state, asteroseismic surface gravity, mass, radius, age, and the data used to derive them for 12,418 stars. This includes 10,036 exceptionally precise measurements, with median fractional uncertainties in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>ν</mml:mi> </mml:mrow> <mml:mrow> <mml:mi mathvariant="normal">max</mml:mi> </mml:mrow> </mml:msub> </mml:math> , Δ ν , mass, radius, and age of 0.6%, 0.6%, 3.8%, 1.8%, and 11.1%, respectively. We provide more limited data for 1624 additional stars that either have lower-quality data or are outside of our primary calibration domain. Using lower red giant branch (RGB) stars, we find a median age for the chemical thick disk of 9.14 ± 0.05(ran) ± 0.9(sys) Gyr with an age dispersion of 1.1 Gyr, consistent with our error model. We calibrate our red clump (RC) mass loss to derive an age consistent with the lower RGB and provide asymptotic GB and RGB ages for luminous stars. We also find a sharp upper-age boundary in the chemical thin disk. We find that scaling relations are precise and accurate on the lower RGB and RC, but they become more model dependent for more luminous giants and break down at the tip of the RGB. We recommend the use of multiple methods, calibration to a fundamental scale, and the use of stellar models to interpret frequency spacings.

The Astrophysical Journal Supplement SeriesVol. 276(2)
Astronomy and Space (AU)
National Science Foundation, Smithsonian Institution, U.S. Department of Energy, National Aeronautics and Space Administration, Alfred P. Sloan Foundation, Carnegie Institution of Washington, Ohio State University, Aspen Center for Physics, University of Utah, Johns Hopkins University, Carnegie Mellon University, University of Notre Dame, University of Portsmouth, New Mexico State University, Space Telescope Science Institute, Ministerio de Ciencia, Innovación y Universidades, Joint Institute for Nuclear Astrophysics - Center for the Evolution of the Elements, York University, University of Oxford, European Commission, Generalitat de Catalunya, Ministério da Ciência, Tecnologia e Inovação, Nuclear Safety and Security Commission, Ministerio de Ciencia e Innovación, Universidad Nacional Autónoma de México, Max-Planck-Institut für Astrophysik, Max-Planck-Institut für Astronomie, Instituto de Astrofísica de Canarias, Office of Science, University of Colorado Boulder, Science Mission Directorate, HORIZON EUROPE Framework Programme, Leibniz-Gemeinschaft, Fundação para a Ciência e a Tecnologia, Agencia Estatal de Investigación, Office of International Science and Engineering, Lawrence Berkeley National Laboratory
Openalex Percentile: Top 0%
Stellar, planetary, and galactic studies
56.58
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