Is there a low-mass triple system orbiting around the massive semi-detached binary ZZ Cassiopeiae? | |
Li FX(李福兴)1,2,5,6; Qian SB(钱声帮)1,2,5,6; Lajús, Eduardo Fernández3,4; Liu L(刘亮)1,2,5; Zhao EG(赵二刚)1,2,5 | |
刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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2022-04 | |
关键词 | binaries: close binaries: eclipsing stars: evolution stars: individual: ZZ Cassiopeiae |
ISSN号 | 0004-6264 |
DOI | 10.1093/pasj/psac016 |
产权排序 | 第1完成单位 |
文献子类 | Article; Early Access |
英文摘要 | ZZ Cassiopeiae (ZZ Cas) is an early spectral B-type close binary with an orbital period of 1.243527 d. By analyzing the continuous light curve obtained by TESS, and the spectroscopic data with low resolution observed by the 2.16 m telescope in Xinglong station, we found that it is a semi-detached binary; the secondary component fulfills the critical Roche lobe, while the more massive one is detached from the lobes with a fraction of the third light 1.82%. Our O-C diagram time spanning 32.6 yr shows a cyclical oscillation with a semi-amplitude of 0.0255(+/- 0.0010) d and a period of 19.11(+/- 0.27) yr superimposed on an upward parabolic curve with a period increase rate of dP/dt = +2.93 x 10(-8) d yr(-1). The upward parabolic variation and photometric solutions reveal that ZZ Cas is undergoing a late Case A mass transfer process on the nuclear timescale of the secondary component, and it was formed from originally detached binary systems. Its evolution is different from that of V606 Cen in the massive binaries. Meanwhile, the cyclic change in the O-C curve can be interpreted by the light-travel-time effect via the presence of a tertiary body. The tertiary companion with a minimal mass of M-3 = 4.23(+/- 0.22) M-circle dot orbits around the central eclipsing binary in an eccentric orbit (e = 0.62). The estimation of an extremely low luminosity ratio of the primary component and the tertiary body may reveal that the additional component is a low-mass triple system or a compact object candidate. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
资助项目 | Chinese Natural Science FoundationNational Natural Science Foundation of China (NSFC)[11933008] ; Chinese Natural Science FoundationNational Natural Science Foundation of China (NSFC)[11922306] ; Chinese Natural Science FoundationNational Natural Science Foundation of China (NSFC)[11773066] ; Chinese Natural Science FoundationNational Natural Science Foundation of China (NSFC)[11903076] |
WOS关键词 | LIGHT-CURVES ; STARS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000788204000001 |
资助机构 | Chinese Natural Science FoundationNational Natural Science Foundation of China (NSFC)[11933008, 11922306, 11773066, 11903076] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25081] ![]() |
专题 | 云南天文台_双星与变星研究组 |
通讯作者 | Li FX(李福兴) |
作者单位 | 1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China; 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P. O. Box 110, 650216 Kunming, China; 3.Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900 La Plata, Buenos Aires, Argentina; 4.Instituto de Astrofísica de La Plata (CCT La Plata − CONICET/UNLP), 1900 La Plata, Argentina 5.Yunnan Observatories, Chinese Academy of Sciences (CAS), P. O. Box 110, 650216 Kunming, China; 6.University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China; |
推荐引用方式 GB/T 7714 | Li FX,Qian SB,Lajús, Eduardo Fernández,et al. Is there a low-mass triple system orbiting around the massive semi-detached binary ZZ Cassiopeiae?[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2022. |
APA | Li FX,Qian SB,Lajús, Eduardo Fernández,Liu L,&Zhao EG.(2022).Is there a low-mass triple system orbiting around the massive semi-detached binary ZZ Cassiopeiae?.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN. |
MLA | Li FX,et al."Is there a low-mass triple system orbiting around the massive semi-detached binary ZZ Cassiopeiae?".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2022). |
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