Photometric study of neglected eclipsing binary GSC 3576-0170

The new multi-color BVRI photometric light curves of the short-period eclipsing binary GSC 3576-0170 were obtained on two consecutive nights (October 5 and 6, 2009). With the 2003 version of Wilson–Devinney program, the precise photometric solutions are derived for the first time. The result shows t...

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Bibliographic Details
Published inNew astronomy Vol. 15; no. 8; pp. 653 - 656
Main Authors Zhang, Liyun, Jing, Jianghong, Tang, Yanke, Zhang, Xiliang
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.2010
Subjects
97.20.Jg
97.80.Fk
97.80.Hn
Binaries: eclipsing
Stars: binaries: close
Stars: individual
97.80.Hn
Stars: individual
97.20.Jg
Stars: binaries: close
Binaries: eclipsing
97.80.Fk
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Summary:The new multi-color BVRI photometric light curves of the short-period eclipsing binary GSC 3576-0170 were obtained on two consecutive nights (October 5 and 6, 2009). With the 2003 version of Wilson–Devinney program, the precise photometric solutions are derived for the first time. The result shows that GSC 3576-0170 is a semi-detached binary system with a large temperature difference of approximately 1490 K. The light-curve distortions are further explained by a hot spot on the secondary component through mass transfer via a stream hitting the facing surface of the secondary component. By analyzing all available light minimum times, we also derived an update ephemeris and found for the first time a possible periodic oscillation with an amplitude of 0.0038 days and a period of 4.3 years. The periodic oscillation could be explained either by the light-time effect due to a presumed third component or by magnetic activity cycle of the system.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1384-1076
1384-1092
DOI:10.1016/j.newast.2010.04.003