A CCD photometric survey of variable stars in the field of NGC 188
文献类型：期刊论文
| 作者 | Zhang, XB ; Deng, L; Tian, B; Zhou, X
|
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2002-03-01 |
| 卷号 | 123期号:3页码:1548-1558 |
| 关键词 | binaries : general open clusters and associations : individual (NGC 188) stars : variables : general |
| 英文摘要 | The results of a recent CCD photometry survey of variables in a 1degrees field covering the old open cluster NGC 188 are presented. A total of 16 short-period variables were identified during five nights, among which eight are new variables in the program field. By adopting the method of phase-dispersion minimization, the periods for seven of the eight new variables are determined. The main properties, the classifications, as well as the memberships are discussed for all of these variable stars, based on the behavior of light curves, the locations in the color-magnitude diagram, and the results of proper motions. Among the eight new objects, six are W UMa binaries, in which one definitely is and two probably are members of the cluster. A detached or semidetached eclipsing binary with an orbital period longer than 1 day is found, which is a likely cluster star. In addition, a field star with a peculiar light curve is detected, which can be classified as a RRd type variable. Moreover, revised basic data for the eight old variables are given according to our observations. V8 can be classified as an RS CVn-type star with light variations larger than 0.2 mag. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000174585700029 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8536]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Natl Astron Observ, Beijing Astron Observ, Beijing 100012, Peoples R China 2.Natl Astron Observ, Beijing Astrophys Ctr, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, XB,Deng, L,Tian, B,et al. A CCD photometric survey of variable stars in the field of NGC 188[J]. ASTRONOMICAL JOURNAL,2002,123(3):1548-1558. |
| APA | Zhang, XB,Deng, L,Tian, B,&Zhou, X.(2002).A CCD photometric survey of variable stars in the field of NGC 188.ASTRONOMICAL JOURNAL,123(3),1548-1558. |
| MLA | Zhang, XB,et al."A CCD photometric survey of variable stars in the field of NGC 188".ASTRONOMICAL JOURNAL 123.3(2002):1548-1558. |
入库方式： OAI收割
来源：国家天文台
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