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Period study of the delta Scuti variable DE Lac
Wang SM(王树民)1,2,3; Qian SB(钱声帮)1,2,3; Liao WP(廖文萍)1,2; Zhang J(张嘉)1,2; Zhou X(周肖)1,2,3; Zhao EG(赵二刚)1,2
Source PublicationBULLETIN OF THE ASTRONOMICAL SOCIETY OF INDIA
2014-03
Volume42Issue:1Pages:19-25
Contribution Rank第1完成单位
Indexed BySCI
KeywordTechniques: Photometric Stars: Variable: Delta Scuti Stars: Individual: De Lacertae
Abstract

DE Lac is a high-amplitude delta Scuti variable with a period of 0.253694 days. New CCD photometric monitoring of DE Lac was carried out on 2013 December 18 and 2014 January 5, by using the 1.0-m reflecting telescope at Yunnan Observatories. Photometric observations of DE Lac were also obtained by using the 85-cm telescope at Xinglong Station of National Astronomical Observatory. By using a few new determined times of maximum light together with those collected from the literature, the period changes in Observed-Calculated (O - C) diagram are analyzed. We discover that the pulsating period of DE Lac is increasing continuously at a rate of (P) over dot = + 3.7 x 10(-8) days/year. It is compatible with the prediction from the stellar evolution model calculations. Meanwhile, we collect other delta Scuti stars that have exhibited period changes.

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
PublisherINDIAN INST ASTROPHYSICS
Publication PlaceG C ANUPAMA EDITOR, BANGALORE, 560 034, INDIA
ISSN0304-9523
URL查看原文
Archive Date2015-03-18
WOS IDWOS:000342398800002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTARS ; EVOLUTION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5904
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, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
3.University of Chinese Academy of Sciences, Yuquan Road 19#, Shijingshan Block, 100049 Beijing, P.R. 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,Liao WP,et al. Period study of the delta Scuti variable DE Lac[J]. BULLETIN OF THE ASTRONOMICAL SOCIETY OF INDIA,2014,42(1):19-25.
APA Wang SM,Qian SB,Liao WP,Zhang J,Zhou X,&Zhao EG.(2014).Period study of the delta Scuti variable DE Lac.BULLETIN OF THE ASTRONOMICAL SOCIETY OF INDIA,42(1),19-25.
MLA Wang SM,et al."Period study of the delta Scuti variable DE Lac".BULLETIN OF THE ASTRONOMICAL SOCIETY OF INDIA 42.1(2014):19-25.
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