NAOC Open IR
The high-amplitude δ Scuti variable CY Aqr is probably a triple system
Fang Weijing1; Luo Zhiquan1; Zhang Xiaobin2; Deng Licai2; Wang Kun2; Luo Yangping1; Pan Yang1; Peng Yinjiang1
2016
Source PublicationResearch in Astronomy and Astrophysics
ISSN1674-4527
Volume16Issue:6Pages:96
AbstractData representing 864 times of light maxima of the high-amplitude δ Scuti star CY Aqr were collected from the literature, based on which, long-term period changes of the variable star were investigated. A revised period and new ephemerides were given for the pulsating star. Remarkable cyclic variations were found in the O - C residuals which can be attributed to the light-time effects due to probable unseen components of the object. By using Kopal's method, the orbital parameters of the supposed component stars were derived. The solution suggests that CY Aqr is very probably in a triple system orbited eccentrically by two low-mass companions with periods of 54.2 and 47.3 yr. The lower limits on masses were estimated as 0.04 M_⊙ and 0.02 M_⊙, respectively, for the two hidden companions.
Keywordmethods data analysis - stars variables δ Scuti - stars individual (CY Aqr)
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/66440
Collection中国科学院国家天文台
Affiliation1.西华师范大学
2.中国科学院国家天文台
Recommended Citation
GB/T 7714
Fang Weijing,Luo Zhiquan,Zhang Xiaobin,et al. The high-amplitude δ Scuti variable CY Aqr is probably a triple system[J]. Research in Astronomy and Astrophysics,2016,16(6):96.
APA Fang Weijing.,Luo Zhiquan.,Zhang Xiaobin.,Deng Licai.,Wang Kun.,...&Peng Yinjiang.(2016).The high-amplitude δ Scuti variable CY Aqr is probably a triple system.Research in Astronomy and Astrophysics,16(6),96.
MLA Fang Weijing,et al."The high-amplitude δ Scuti variable CY Aqr is probably a triple system".Research in Astronomy and Astrophysics 16.6(2016):96.
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