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.
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页码：9 / 14
页数：5
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