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V1005 Her: a solar-type shallow-contact binary in a triply fossil system
Zhu, L-Y1,2,3,4; Wang, Z. H.1,2,3,4; Tian, X. M.5; Lil, L. J.1,2,3; Gao, X.6
2019-10-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume489Issue:2Pages:2677-2684
Contribution Rank6
AbstractFour sets of complete multicolour light curves of the short-period solar-type eclipsing binary V1005 Her are presented. It is found that the depth of the primary minima in the light curves went deeper from 2013 to 2018, and then became shallower again in 2019, while those of the secondary minima were unchanged. The total-eclipse characteristics in the light curves enable us to determine reliable photometric solutions of this system. Our results from the detailed light-curve analysis show that V1005 Her is a W-type shallow-contact binary with spot activities. We have monitored this system for 7 yr and 22 new times of light minimum have been determined. Together with those collected from the literature, we investigate its Observed-Calculated O-C curve and detect a cyclic variation. Because of the insufficient energy, this cyclic change cannot be explained by magnetic activity cycles of the components even if it has high spots activities. The detected cyclic variation is more plausible as the results of the light-time effect due to the existence of a third body orbiting around the central binary. The minimal mass of the additional stellar companion is determined around 0.45M(circle dot) in both circular orbit and eccentric orbit cases when a total mass of 1.2M(circle dot) for the binary is adopted. This mass is larger than that of the less massive component of the central binary. It implies that the secondary body was not replaced by the third body during early stellar interactions, suggesting that it is a fossil system and keeps original dynamical information.
Keywordbinaries: close binaries: eclipsing stars: evolution stars: individuals (V1005 Her)
DOI10.1093/mnras/stz2294
Indexed BySCI
Language英语
WOS KeywordANGULAR-MOMENTUM LOSS ; ALGOL-TYPE BINARIES ; CLOSE-BINARY ; ADDITIONAL COMPONENTS ; PERIOD CHANGES ; POSSIBLE MASS ; EVOLUTION
Funding ProjectNational Natural Science Foundation of China[11573063] ; National Natural Science Foundation of China[11922306] ; Science Foundation of Yunnan Province[2017FA001] ; Science Foundation of Yunnan Province[2016FB004] ; Chinese Academy of Sciences(CAS) 'Light of West China' Program ; CAS Interdisciplinary Innovation Team
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000489298100089
PublisherOXFORD UNIV PRESS
Funding OrganizationNational Natural Science Foundation of China ; Science Foundation of Yunnan Province ; Chinese Academy of Sciences(CAS) 'Light of West China' Program ; CAS Interdisciplinary Innovation Team
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/3228
Collection其它
Corresponding AuthorZhu, L-Y; Wang, Z. H.; Lil, L. J.
Affiliation1.Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Yunnan, Peoples R China
2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, POB 110, Kunming 650216, Yunnan, Peoples R China
3.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
4.Univ Chinese Acad Sci, Yuquan Rd 19,Sijingshang Block, Beijing 100049, Peoples R China
5.Shandong Jiaotong Univ, Sch Aeronaut, 5001 Haitang Rd, Jinan 250000, Shandong, Peoples R China
6.Xinjiang Astron Observ, 150 Sci 1 Str, Urumqi 830011, Peoples R China
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GB/T 7714
Zhu, L-Y,Wang, Z. H.,Tian, X. M.,et al. V1005 Her: a solar-type shallow-contact binary in a triply fossil system[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,489(2):2677-2684.
APA Zhu, L-Y,Wang, Z. H.,Tian, X. M.,Lil, L. J.,&Gao, X..(2019).V1005 Her: a solar-type shallow-contact binary in a triply fossil system.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,489(2),2677-2684.
MLA Zhu, L-Y,et al."V1005 Her: a solar-type shallow-contact binary in a triply fossil system".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 489.2(2019):2677-2684.
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