KIC 9406652: AN UNUSUAL CATACLYSMIC VARIABLE IN THE KEPLER FIELD OF VIEW

被引：20

作者：

Gies, Douglas R. ^{[1
,2
]}

Guo, Zhao ^{[1
,2
]}

Howell, Steve B. ^{[3
]}

Still, Martin D. ^{[3
,4
]}

Boyajian, Tabetha S. ^{[5
]}

Hoekstra, Abe J. ^{[6
]}

Jek, Kian J. ^{[6
]}

LaCourse, Daryll ^{[6
]}

Winarski, Troy ^{[6
]}

机构：

[1] Georgia State Univ, Ctr High Angular Resolut Astron, Atlanta, GA 30302 USA

[2] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30302 USA

[3] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[4] Bay Area Environm Res Inst Inc, Sonoma, CA 95476 USA

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

[6] Yale Univ, Planet Hunters Program, New Haven, CT 06520 USA

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 775卷 / 01期

基金：

美国国家科学基金会;

关键词：

binaries: spectroscopic; circumstellar matter; novae; cataclysmic variables; stars: individual (KIC 9406652); X-RAY BINARIES; INTERSTELLAR EXTINCTION; WAVELET ANALYSIS; DONOR STARS; V344; LYRAE; EVOLUTION; SPECTROSCOPY; SPECTRA; MAJORIS;

D O I：

10.1088/0004-637X/775/1/64

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

KIC 9406652 is a remarkable variable star in the Kepler field of view that shows both very rapid oscillations and long term outbursts in its light curve. We present an analysis of the light curve over quarters 1-15 and new spectroscopy that indicates that the object is a cataclysmic variable with an orbital period of 6.108 hr. However, an even stronger signal appears in the light curve periodogram for a shorter period of 5.753 hr, and we argue that this corresponds to the modulation of flux from the hot spot region in a tilted, precessing disk surrounding the white dwarf star. We present a preliminary orbital solution from radial velocity measurements of features from the accretion disk and the photosphere of the companion. We use a Doppler tomography algorithm to reconstruct the disk and companion spectra, and we also consider how these components contribute to the object's spectral energy distribution from ultraviolet to infrared wavelengths. This target offers us a remarkable opportunity to investigate disk processes during the high mass transfer stage of evolution in cataclysmic variables.

引用

页数：10

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