The First APOKASC Catalog of Kepler Dwarf and Subgiant Stars
Aldo Serenelli, Jennifer Johnson, Daniel Huber, Marc Pinsonneault,, Warrick H. Ball, Jamie Tayar, Victor Silva Aguirre, Sarbani Basu, Nicholas, Troup, Saskia Hekker, Thomas Kallinger, Dennis Stello, Guy R. Davies, Mikkel, N. Lund, Savita Mathur, Benoit Mosser, Keivan G. Stassun

TL;DR
This paper presents the first APOKASC catalog combining spectroscopic and asteroseismic data for 415 dwarfs and subgiants, providing precise stellar properties and assessing systematic uncertainties, crucial for future stellar and exoplanet studies.
Contribution
The study introduces the first combined APOKASC catalog with detailed analysis of systematic effects and validation against other measurements, enhancing stellar parameter accuracy.
Findings
Median uncertainties: 2% in log g, 3.4% in density, 2.6% in radius, 5.1% in mass, 19% in age.
Good agreement with previous catalogs and Gaia parallaxes, validating the methods.
Highlighting the importance of metallicity in stellar parameter determination.
Abstract
(Abridged) We present the first APOKASC catalog of spectroscopic and asteroseismic data for 415 dwarfs and subgiants. Asteroseismic data have been obtained by Kepler in short cadence. The spectroscopic parameters are based on spectra taken as part of APOGEE and correspond to DR13 of SDSS. We analyze our data using two Teff scales, the spectroscopic values from DR13 and those derived from SDSS griz photometry. We use the differences in our results arising from these choices as a test of systematic Teff, and find that they can lead to significant differences in the derived stellar properties. Determinations of surface gravity (), mean density (), radius (), mass (), and age () for the whole sample have been carried out with stellar grid-based modeling. We have assessed random and systematic error sources in the spectroscopic and seismic data, as well as in the…
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