Characterizing solar-type stars from full-length Kepler data sets using the Asteroseismic Modeling Portal

O. L. Creevey, T. S. Metcalfe, M. Schultheis, D. Salabert, Michael Bazot, F. Thévenin, S. Mathur, H. Xu, R. A. García

    Research output: Contribution to journalArticle

    Abstract

    The Kepler space telescope yielded unprecedented data for the study of solar-like oscillations in other stars. The large samples of multi-year observations posed an enormous data analysis challenge that has only recently been surmounted. Asteroseismic modeling has become more sophisticated over time, with better methods gradually developing alongside the extended observations and improved data analysis techniques. We apply the latest version of the Asteroseismic Modeling Portal (AMP) to the full-length Kepler data sets for 57 stars, comprising planetary hosts, binaries, solar-analogs, active stars, and for validation purposes, the Sun. From an analysis of the derived stellar properties for the full sample, we identify a variation of the mixing-length parameter with atmospheric properties. We also derive a linear relation between the stellar age and a characteristic frequency separation ratio. In addition, we find that the empirical correction for surface effects suggested by Kjeldsen and coworkers is adequate for solar-type stars that are not much hotter (Teff≤ 6200 K) or significantly more evolved (log g≥ 4.2, ( Δν )≥ 80 μHz) than the Sun. Precise parallaxes from the Gaia mission and future observations from TESS and PLATO promise to improve the reliability of stellar properties derived from asteroseismology.

    Original languageEnglish (US)
    Article numberA67
    JournalAstronomy and Astrophysics
    Volume601
    DOIs
    StatePublished - May 1 2017

    Fingerprint

    stars
    modeling
    oscillation
    solar oscillations
    asteroseismology
    telescopes
    analogs
    data analysis
    analysis
    effect
    method
    parameter

    Keywords

    • Asteroseismology
    • Methods: numerical
    • Stars: fundamental parameters
    • Stars: interiors
    • Stars: oscillations

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Creevey, O. L., Metcalfe, T. S., Schultheis, M., Salabert, D., Bazot, M., Thévenin, F., ... García, R. A. (2017). Characterizing solar-type stars from full-length Kepler data sets using the Asteroseismic Modeling Portal. Astronomy and Astrophysics, 601, [A67]. https://doi.org/10.1051/0004-6361/201629496

    Characterizing solar-type stars from full-length Kepler data sets using the Asteroseismic Modeling Portal. / Creevey, O. L.; Metcalfe, T. S.; Schultheis, M.; Salabert, D.; Bazot, Michael; Thévenin, F.; Mathur, S.; Xu, H.; García, R. A.

    In: Astronomy and Astrophysics, Vol. 601, A67, 01.05.2017.

    Research output: Contribution to journalArticle

    Creevey, OL, Metcalfe, TS, Schultheis, M, Salabert, D, Bazot, M, Thévenin, F, Mathur, S, Xu, H & García, RA 2017, 'Characterizing solar-type stars from full-length Kepler data sets using the Asteroseismic Modeling Portal', Astronomy and Astrophysics, vol. 601, A67. https://doi.org/10.1051/0004-6361/201629496
    Creevey, O. L. ; Metcalfe, T. S. ; Schultheis, M. ; Salabert, D. ; Bazot, Michael ; Thévenin, F. ; Mathur, S. ; Xu, H. ; García, R. A. / Characterizing solar-type stars from full-length Kepler data sets using the Asteroseismic Modeling Portal. In: Astronomy and Astrophysics. 2017 ; Vol. 601.
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