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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
Source PublicationNEW ASTRONOMY
2014-10
Volume32Pages:6-9
DOI10.1016/j.newast.2014.03.003
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars : Variable : Delta Scuti Stars : Individuals (Bp Peg) Techniques : Photometry
Abstract

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.

Funding ProjectChinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Chinese Natural Science Foundation[10933002]
Funding OrganizationChinese Natural Science Foundation[11133007, 11325315, 10933002]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherELSEVIER SCIENCE BV
Publication PlacePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN1384-1076
URL查看原文
Archive Date2014-06-09
WOS IDWOS:000336874400002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordLYNCIS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5895
Collection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
Corresponding AuthorWang SM(王树民)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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.(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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