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The physical nature of the short-period RS CVn system DV psc
Zhang, X. B.; Zhang, R. X.
2007-12-11
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume382Issue:3Pages:1133-1138
AbstractWe present multicolour CCD photometry of the short-period RS CVn-type binary DV Psc obtained in 2006 September and October. Our observations indicate that GSC0008-789, the comparison star used by Robb et al. in their discovery of DV Psc, is a variable with amplitude exceeding 0.08 mag. Based on the newdata, the orbital period of the eclipsing system is revised to 0.308 536 09 d. From the new observations, a set of completely covered B, V and R light curves and a single V-band light curve are formed in two epochs. The radial-velocity curves obtained by Lu, Rucinski & Ogloza are reformed with the newly determined ephemeris and are analysed along with the light curves using the 2003 version of the Wilson - Devinney code. The results show that DV Psc is a detached, near-contact binary system with a mass ratio of 0.693 +/- 0.005 and a separation of 2.038R(circle dot). The masses and radii for the components are determined as 0.70 +/- 0.02M(circle dot), 0.68 +/- 0.03R(circle dot) for the primary, and 0.49 +/- 0.01M(circle dot), 0.51 +/- 0.02R(circle dot) for the secondary.
KeywordStars Activity Binaries Eclipsing Stars Individual Dv Psc Stars Late-type
DOI10.1111/j.1365-2966.2007.12293.x
Indexed BySCI
Language英语
WOS IDWOS:000251252600018
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8912
Collection光学天文研究部
AffiliationChinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, X. B.,Zhang, R. X.. The physical nature of the short-period RS CVn system DV psc[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2007,382(3):1133-1138.
APA Zhang, X. B.,&Zhang, R. X..(2007).The physical nature of the short-period RS CVn system DV psc.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,382(3),1133-1138.
MLA Zhang, X. B.,et al."The physical nature of the short-period RS CVn system DV psc".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 382.3(2007):1133-1138.
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