VERIFICATION OF THE KEPLER INPUT CATALOG FROM ASTEROSEISMOLOGY OF SOLAR-TYPE STARS

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Verner, GA (Author) Other; Chaplin, WJ (Author) Other; Basu, S (Author) Other; Brown, TM (Author) Other; Hekker, S (Author) Other; Huber, D (Author) Other; Karoff, C (Author) Other; Mathur, S (Author) Other; Metcalfe, TS (Author) Other; Mosser, B (Author) Other; Quirion, PO (Author) Other; Appourchaux, T (Author) Other; Bedding, TR (Author) Other; Bruntt, H (Author) Other; Campante, TL (Author) Other; Elsworth, Y (Author) Other; Garcia, RA (Author) Other; Handberg, R (Author) Other; Regulo, C (Author) Other; Roxburgh, IW (Author) Other; Stello, D (Author) Other; Christensen Dalsgaard, J (Author) Other; Gilliland, RL (Author) Other; Kawaler, SD (Author) Other; Kjeldsen, H (Author) Other; Allen, C (Author) Other; Clarke, BD (Author) Other; Girouard, FR (Author) Other

Journal

Title: Astrophysical Journal Letters

Vol. 738

Final page: L28

ISSN: 2041-8205

Publisher: American Astronomical Society

Indexing

ISI Web of Knowledge - 37 Citations

Scopus - 23 Citations

Other information

Authenticus ID: P-002-MKS

DOI: 10.1088/2041-8205/738/2/l28

Abstract (EN): We calculate precise stellar radii and surface gravities from the asteroseismic analysis of over 500 solar-type pulsating stars observed by the Kepler space telescope. These physical stellar properties are compared with those given in the Kepler Input Catalog (KIC), determined from ground-based multi-color photometry. For the stars in our sample, we find general agreement but we detect an average overestimation bias of 0.23 dex in the KIC determination of log(g) for stars with log(g)(KIC) > 4.0 dex, and a resultant underestimation bias of up to 50% in the KIC radii estimates for stars with R-KIC < 2 R-circle dot. Part of the difference may arise from selection bias in the asteroseismic sample; nevertheless, this result implies there may be fewer stars characterized in the KIC with R similar to 1 R-circle dot than is suggested by the physical properties in the KIC. Furthermore, if the radius estimates are taken from the KIC for these affected stars and then used to calculate the size of transiting planets, a similar underestimation bias may be applied to the planetary radii.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5