The physical nature of the short-period RS CVn system DV psc
The physical nature of the short-period RS CVn system DV psc
复制标题
短周期 RS CVn 系统 DV psc 的物理性质
DOI：
10.1111/j.1365-2966.2007.12293.x
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发表时间：
2007-12
影响因子：
4.8
通讯作者：
Zhang, R. X.
中科院分区：
文献类型：
--
作者：
Zhang, X. B.;Zhang, R. X.
We 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 new data, the orbital period of the eclipsing system is revised to 0.308 53609 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 2.038 R ⊙ . The masses and radii for the components are determined as 0.70 ± 0.02 M ⊙ , 0.68 ± 0.03 R ⊙ for the primary, and 0.49 ± 0.01M ⊙ , 0.51 ± 0.02 R ⊙ for the secondary.
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DOI：
10.1111/j.1365-2966.2004.07200.x
发表时间：
2004
影响因子：
4.8
作者：
X. Zhang;R. Zhang
通讯作者：
X. Zhang;R. Zhang
DOI：
10.1086/346275
发表时间：
2003-03
期刊：
The Astronomical Journal
影响因子：
--
作者：
X. Zhang;R. Zhang
通讯作者：
X. Zhang;R. Zhang
DOI：
10.1086/150986
发表时间：
1971-06
期刊：
The Astrophysical Journal
影响因子：
--
作者：
R. Wilson;E. Devinney
通讯作者：
R. Wilson;E. Devinney
DOI：
10.1086/322336
发表时间：
2001-09
期刊：
The Astrophysical Journal
影响因子：
--
作者：
D. J. Mullan;J. MacDonald
通讯作者：
D. J. Mullan;J. MacDonald
影响因子：
1.9
作者：
F. Salehi;M. Edalati
通讯作者：
F. Salehi;M. Edalati