Revision of the photometric parameters of BS Cassiopeiae
He Jiajia1; Qian Shengbang1; Miloslav Zejda2; Zdenek Mikulsek2
Source PublicationResearch in Astronomy and Astrophysics
AbstractSeven charge-coupled device (CCD) photometric times of light minimum of the overcontact binary BS Cas which were obtained from 2007 August to November and one CCD light curve in the R band which was observed on 2007 September 24 and October 15, are presented. It is found that the light curve of BS Cas has characteristics like a typical EW-type light variation. The light curve obtained by us is symmetric and shows total eclipses, which is very useful for determining photometric parameters with high precision. Photometric solutions were derived by using the 2003 version of the Wilson-Devinney code. It shows that BS Cas is a W-subtype overcontact binary (f = 27:5% ± 0:4%) with a mass ratio of q = 2:7188 ± 0:0040. The temperature difference between the two components is 190 K. Analysis of the O–C curve suggests that the period of AE Phe shows a long-term continuous decrease at a rate of dP/dt = -2:45×10~(-7) d yr~(-1). The long-time period decrease can be explained by mass transfer from the primary to the secondary.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
He Jiajia,Qian Shengbang,Miloslav Zejda,et al. Revision of the photometric parameters of BS Cassiopeiae[J]. Research in Astronomy and Astrophysics,2010,10(6):569.
APA He Jiajia,Qian Shengbang,Miloslav Zejda,&Zdenek Mikulsek.(2010).Revision of the photometric parameters of BS Cassiopeiae.Research in Astronomy and Astrophysics,10(6),569.
MLA He Jiajia,et al."Revision of the photometric parameters of BS Cassiopeiae".Research in Astronomy and Astrophysics 10.6(2010):569.
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