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

被引：38

作者：

Verner, G. A. ^{[1
,2
]}

Chaplin, W. J. ^{[1
]}

Basu, S. ^{[3
]}

Brown, T. M. ^{[4
]}

Hekker, S. ^{[1
,5
]}

Huber, D. ^{[6
]}

Karoff, C. ^{[7
]}

Mathur, S. ^{[8
,9
]}

Metcalfe, T. S. ^{[8
,9
]}

Mosser, B. ^{[10
]}

Quirion, P. -O. ^{[11
]}

Appourchaux, T. ^{[12
]}

Bedding, T. R. ^{[6
]}

Bruntt, H. ^{[7
]}

Campante, T. L. ^{[13
]}

Elsworth, Y. ^{[1
]}

Garcia, R. A. ^{[14
]}

Handberg, R. ^{[7
]}

Regulo, C. ^{[15
,16
]}

Roxburgh, I. W. ^{[2
]}

Stello, D. ^{[6
]}

Christensen-Dalsgaard, J. ^{[7
]}

Gilliland, R. L. ^{[17
]}

Kawaler, S. D. ^{[18
]}

Kjeldsen, H. ^{[7
]}

Allen, C. ^{[19
]}

Clarke, B. D. ^{[20
]}

Girouard, F. R. ^{[19
]}

机构：

[1] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[2] Univ London, Astron Unit, London E1 4NS, England

[3] Yale Univ, Dept Astron, New Haven, CT 06520 USA

[4] Las Cumbres Observ Global Telescope, Goleta, CA 93117 USA

[5] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands

[6] Univ Sydney, Sch Phys, SIfA, Sydney, NSW 2006, Australia

[7] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[8] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA

[9] Natl Ctr Atmospher Res, Div Comp Sci, Boulder, CO 80307 USA

[10] Univ Paris 07, Observ Paris, Univ Paris 06, LESIA,CNRS, F-92195 Meudon, France

[11] Canadian Space Agcy, St Hubert, PQ J3Y 8Y9, Canada

[12] Univ Paris 11, Inst Astrophys Spatiale, CNRS, UMR8617, F-91405 Orsay, France

[13] Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal

[14] Univ Paris Diderot, IRFU, CNRS, Lab AIM,CEA,DSM,SAp, F-91191 Gif Sur Yvette, France

[15] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain

[16] Inst Astrofis Canarias, E-38200 Tenerife, Spain

[17] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[18] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[19] NASA, Ames Res Ctr, Orbital Sci Corp, Moffett Field, CA 94035 USA

[20] NASA, Ames Res Ctr, SETI Inst, Moffett Field, CA 94035 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2011年 / 738卷 / 02期

基金：

英国科学技术设施理事会;

关键词：

stars: fundamental parameters; stars: interiors; stars: oscillations; OSCILLATIONS; PARAMETERS; EVOLUTION; RADIUS;

D O I：

10.1088/2041-8205/738/2/L28

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：5

共 50 条

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