The First APOKASC Catalog of Kepler Dwarf and Subgiant Stars

Research output: Research - peer-reviewJournal article

DOI

  • Aldo Serenelli
    Aldo SerenelliInstitute of Space Sciences (IEEC-CSIC), Campus UAB, Carrer de Can Magrans S/N, E-08193, Barcelona, Spain aldos@ice.csic.es
  • Jennifer Johnson
    Jennifer JohnsonDepartment of Astronomy, The Ohio State University, Columbus, OH 43210, USA 0000-0001-7258-1834
  • Daniel Huber
    Daniel Huber
  • Marc Pinsonneault
    Marc PinsonneaultDepartment of Astronomy, The Ohio State University, Columbus, OH 43210, USA 0000-0002-7549-7766
  • Warrick H. Ball
    Warrick H. Ball
  • Jamie Tayar
    Jamie TayarDepartment of Astronomy, The Ohio State University, Columbus, OH 43210, USA 0000-0002-4818-7885
  • Victor Silva Aguirre
  • Sarbani Basu
    Sarbani BasuDepartment of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101, USA 0000-0002-6163-3472
  • Nicholas Troup
    Nicholas TroupDepartment of Astronomy, University of Virginia, Charlottesville, VA 22904-4325, USA 0000-0003-3248-3097
  • Saskia Hekker
    Saskia Hekker
  • Thomas Kallinger
    Thomas KallingerInstitute of Astrophysics, University of Vienna, Türkenschanzstrasse 17, Vienna 1180, Austria 0000-0003-3627-2561
  • Dennis Stello
  • Guy R. Davies
    Guy R. DaviesSchool of Physics and Astronomy, University of Birmingham, Edgbaston Park Road, West Midlands, Birmingham, B15 2TT UK 0000-0002-4290-7351
  • Mikkel N. Lund
  • Savita Mathur
    Savita MathurSpace Science Institute, 4750 Walnut Street Suite #205, Boulder, CO 80301, USA
  • Benoit Mosser
    Benoit MosserLESIA, Observatoire de Paris, PSL Research Univ., CNRS, Univ. Pierre et Marie Curie, Université Paris Diderot, F-92195, Meudon, France
  • Keivan G. Stassun
    Keivan G. StassunFisk University, Department of Physics, 1000 17th Avenue N., Nashville, TN 37208, USA 0000-0002-3481-9052
  • William J. Chaplin
    William J. ChaplinSchool of Physics and Astronomy, University of Birmingham, Edgbaston Park Road, West Midlands, Birmingham, B15 2TT UK 0000-0002-5714-8618
  • Yvonne Elsworth
    Yvonne ElsworthSchool of Physics and Astronomy, University of Birmingham, Edgbaston Park Road, West Midlands, Birmingham, B15 2TT UK
  • Rafael A. García
    Rafael A. GarcíaUniversité Paris Diderot, AIM, Sorbonne Paris Cité, CEA, CNRS, F-91191 Gif-sur-Yvette, France
  • Rasmus Handberg
  • Jon Holtzman
    Jon HoltzmanDepartment of Astronomy, MSC 4500, New Mexico State University, P.O. Box 30001, Las Cruces, NM 88003, USA 0000-0002-9771-9622
  • Fred Hearty
    Fred HeartyDepartment of Astronomy and Astrophysics, Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, PA 16802, USA
  • D. A. García-Hernández
    D. A. García-HernándezDepartamento de Astrofísica, Universidad de La Laguna, (ULL), E-38206 La Laguna, Tenerife, Spain
  • Patrick Gaulme
    Patrick GaulmeApache Point Observatory, 2001 Apache Point Road, P.O. Box 59, sunspot, NM 88349, USA 0000-0001-8330-5464
  • Olga Zamora
    Olga ZamoraDepartamento de Astrofísica, Universidad de La Laguna, (ULL), E-38206 La Laguna, Tenerife, Spain
We present the first APOKASC catalog of spectroscopic and asteroseismic data for dwarfs and subgiants. Asteroseismic data for our sample of 415 objects have been obtained by the Kepler mission in short (58.5 s) cadence, and light curves span from 30 up to more than 1000 days. The spectroscopic parameters are based on spectra taken as part of the Apache Point Observatory Galactic Evolution Experiment and correspond to Data Release 13 of the Sloan Digital Sky Survey. We analyze our data using two independent {T}{eff} 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 temperature uncertainties and find that they can lead to significant differences in the derived stellar properties. Determinations of surface gravity ({log}g), mean density (<ρ > ), radius (R), mass (M), and age (τ) for the whole sample have been carried out by means of (stellar) grid-based modeling. We have thoroughly assessed random and systematic error sources in the spectroscopic and asteroseismic data, as well as in the grid-based modeling determination of the stellar quantities provided in the catalog. We provide stellar properties determined for each of the two {T}{eff} scales. The median combined (random and systematic) uncertainties are 2% (0.01 dex; {log}g), 3.4% (<ρ > ), 2.6% (R), 5.1% (M), and 19% (τ) for the photometric {T}{eff} scale and 2% ({log}g), 3.5% (<ρ > ), 2.7% (R), 6.3% (M), and 23% (τ) for the spectroscopic scale. We present comparisons with stellar quantities in the asteroseismic catalog by Chaplin et al. that highlight the importance of having metallicity measurements for determining stellar parameters accurately. Finally, we compare our results with those coming from a variety of sources, including stellar radii determined from TGAS parallaxes and asteroseismic analyses based on individual frequencies. We find a very good agreement for all inferred quantities. The latter comparison, in particular, gives strong support to the determination of stellar quantities based on global seismology, a relevant result for future missions such as TESS and PLATO.
Original languageEnglish
JournalThe Astrophysical Journal Supplement Series
Volume233
Issue number2
Pages (from-to)23
ISSN0067-0049
DOIs
StatePublished - 1 Dec 2017

    Research areas

  • asteroseismology, catalogs, stars: fundamental parameters, surveys

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