Physical parameters and orbital period variation of a newly discovered cataclysmic variable GSC 4560-02157
文献类型：期刊论文
| 作者 | Han ZT(韩忠涛)1,2,3 ; Qian SB(钱声帮)1,2,3; Voloshina, Irma4; Metlov, Vladimir G.4; Zhu LY(朱俐颖)1,2,3; Li LJ(李临甲)1,2
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2016-10-01 |
| 卷号 | 16期号:10页码:156-U62 |
| ISSN号 | 1674-4527 |
| 关键词 | techniques: photometric stars: binaries: cataclysmic variables stars: individual: GSC 4560-02157 |
| 通讯作者 | Han, ZT |
| 产权排序 | 第一完成单位 |
| 英文摘要 | GSC 4560-02157 is a new eclipsing cataclysmic variable with an orbital period of 0.265359 days. By using the published V- and R-band data together with our observations, we discovered that the O - C curve of GSC 4560-02157 may show a cyclic variation with a period of 3.51 years and an amplitude of 1.40 min. If this variation is caused by a light travel-time effect via the existence of a third body, then its mass can be derived as M-3 sin i' approximate to 1.08 M-Jup, and it should be a low-mass star. In addition, several physical parameters were measured. The color of the secondary star was determined to be V - R = 0.77(+/- 0.03) which corresponds to a spectral type of K2-3. The secondary star's mass was estimated as M-2 = 0.73(+/- 0.02) M-circle dot by combing the derived V - R value around phase 0 with the assumption that it obeys the mass-luminosity relation for main sequence stars. This mass is consistent with the mass period relation for CV donor stars. For the white dwarf, the eclipse durations and contacts of the white dwarf yield an upper limit on the white dwarf's radius corresponding to a lower limit on mass of M-1 approximate to 0.501 M-circle dot. The overestimated radius and previously published spectral data indicate that the boundary layer may have a very high temperature. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | WHITE-DWARF ; MASS ; QUIESCENCE ; BINARIES ; CATALOG ; STAR |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/1674-4527/16/10/156/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000385996000007 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9744]  |
| 专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China 3.University of Chinese Academy of Sciences, Beijing 100049, China 4.Sternberg Astronomical Institute, Moscow State University, Universitetskij prospect 13, Moscow 119992, Russia |
| 推荐引用方式 GB/T 7714 | Han ZT,Qian SB,Voloshina, Irma,et al. Physical parameters and orbital period variation of a newly discovered cataclysmic variable GSC 4560-02157[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(10):156-U62. |
| APA | Han ZT,Qian SB,Voloshina, Irma,Metlov, Vladimir G.,Zhu LY,&Li LJ.(2016).Physical parameters and orbital period variation of a newly discovered cataclysmic variable GSC 4560-02157.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(10),156-U62. |
| MLA | Han ZT,et al."Physical parameters and orbital period variation of a newly discovered cataclysmic variable GSC 4560-02157".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.10(2016):156-U62. |
入库方式： OAI收割
来源：云南天文台
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