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Detection of a cool stellar companion to the delta Scuti variable star BP Peg
Wang SM(王树民)1,2,3; Qian SB(钱声帮)1,2,3; He JJ(何家佳)1,2; Zhou X(周肖)1,2,3; Zhao EG(赵二刚)1,2,3; Wang, SM (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊NEW ASTRONOMY
2014-10
卷号32页码:6-9
DOI10.1016/j.newast.2014.03.003
产权排序第1完成单位
收录类别SCI
关键词Stars : Variable : Delta Scuti Stars : Individuals (Bp Peg) Techniques : Photometry
摘要New CCD photometric monitoring on the high-amplitude delta Scuti variable BP Peg was carried out on November 4, 2013 by using the 1.0-m reflecting telescope of Yunnan Observatories in China as well as on December 29, 2013 by using the 85-cm telescope at Xinglong Station of National Astronomical Observatory in China. BP Peg is a new high-amplitude B Scuti variable with a period of 0.10954357 day. We have collected all the times of light maximum from the literature together with our data, and the pulsation period changes are analyzed through Observed-Calculated (O-C) method. With the available data, we discover that the pulsating period of BP Peg shows a cyclic oscillation with a period of 24.5 years and an amplitude of 0.0060 days. If the cyclic period changes are caused by light-time effect in a binary system, the reckoned mass of the hidden companion could be 0.20 M-circle dot and possibly, it is an M-type star. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-SA license.
项目资助者Chinese Natural Science Foundation [11133007, 11325315, 10933002]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
归档日期2014-06-09
WOS记录号WOS:000336874400002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LYNCIS
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5895
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Wang, SM (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, PR China
2.Key Laboratory of the Structure and Evolution Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, PR China
3.University of the Chinese Academy of Sciences, Yuquan Road 19#, Shijingshan Block, 100049 Beijing, PR China
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Wang SM,Qian SB,He JJ,et al. Detection of a cool stellar companion to the delta Scuti variable star BP Peg[J]. NEW ASTRONOMY,2014,32:6-9.
APA Wang SM,Qian SB,He JJ,Zhou X,Zhao EG,&Wang, SM .(2014).Detection of a cool stellar companion to the delta Scuti variable star BP Peg.NEW ASTRONOMY,32,6-9.
MLA Wang SM,et al."Detection of a cool stellar companion to the delta Scuti variable star BP Peg".NEW ASTRONOMY 32(2014):6-9.
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