Photometric variability of four coronally active stars

被引：0

作者：

J. C. Pandey

K. P. Singh

R. Sagar

S. A. Drake

机构：

[1] State Observatory,

[2] Tata Institute of Fundamental Research,undefined

[3] Indian Institute of Astrophysics,undefined

[4] Code 668,undefined

[5] LHEA,undefined

[6] NASA/Goddaard Space Flight Center,undefined

来源：

Journal of Astrophysics and Astronomy | 2002年 / 23卷

关键词：

Stars; variable, optical photometry, X-rays; source;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We present photometric observations of four stars that are optical counterparts of soft X-ray/EUV sources, namely 1ES 0829+15.9, 1ES0920-13.6, 2RE J1 10159+223509 and 1ES 1737+61.2. We have discovered periodic variability in two of the stars, viz., MCC 527 (1ES 0829+15.9; Period = 0d.828 ± 0.0047) and HD 81032 (1ES 0920-13.6; Period = ∼ 57.02 ± 0.560 days). HD 95559 (2RE J1 10159+223509) is found to show a period of 3d. HD 160934 (1ES1737+61.2) also shows photometric variability but needs to be monitored further for finding its period. These stars most likely belong to the class of chromospherically active stars.

引用

页码：9 / 14

页数：5

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