Cepheid investigations using the Kepler space telescope

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50852

Title:	Cepheid investigations using the Kepler space telescope
Authors:	Szabo,R;Szabados,L;Ngeow,CC;Smolec,R;Derekas,A;Moskalik,P;Nuspl,J;Lehmann,H;Furesz,G;Molenda-Zakowicz,J;Bryson,ST;Henden,AA;Kurtz,DW;Stello,D;Nemec,JM;Benko,JM;Berdnikov,L;Bruntt,H;Evans,NR;Gorynya,NA;Pastukhova,EN;Simcoe,RJ;Grindlay,JE;Los,EJ;Doane,A;Laycock,SG;Mink,DJ;Champine,G;Sliski,A;Handler,G;Kiss,LL;Kollath,Z;Kovacs,J;Christensen-Dalsgaard,J;Kjeldsen,H;Allen,C;Thompson,SE;Van Cleve,J
Contributors:	天文研究所
Keywords:	RR LYRAE STARS;VARIABLE-STARS;CLASSICAL CEPHEIDS;RADIAL-VELOCITIES;LIGHT CURVES;ASTEROSEISMOLOGY PROGRAM;CORRELATION SPECTROMETER;INITIAL CHARACTERISTICS;FOURIER DECOMPOSITION;STRUCTURAL-PROPERTIES
Date:	2011
Issue Date:	2012-03-27 18:11:26 (UTC+8)
Publisher:	國立中央大學
Abstract:	We report results of initial work done on selected candidate Cepheids to be observed with the Kepler space telescope. Prior to the launch, 40 candidates were selected from previous surveys and data bases. The analysis of the first 322 d of Kepler photometry, and recent ground-based follow-up multicolour photometry and spectroscopy allowed us to confirm that one of these stars, V1154 Cyg (KIC 7548061), is indeed a 4.9-d Cepheid. Using the phase lag method, we show that this star pulsates in the fundamental mode. New radial velocity data are consistent with previous measurements, suggesting that a long-period binary component is unlikely. No evidence is seen in the ultraprecise, nearly uninterrupted Kepler photometry for non-radial or stochastically excited modes at the micromagnitude level. The other candidates are not Cepheids, but an interesting mix of possible spotted stars, eclipsing systems and flare stars.
Relation:	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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