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V723 Persei: A short-period Algol-like near-contact binary
Tian XM(田晓慢)1,2,3; Zhu LY(朱俐颖)1,2,3,4
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2019-06-01
卷号71期号:3页码:9
DOI10.1093/pasj/psz044
产权排序第1完成单位
收录类别SCI ; EI
关键词stars: binaries: close stars: binaries: eclipse stars: binaries: individual (V723 Persei) stars: evolution
摘要

Complete multi-color photometric observations in the BVRC/(C) bands and low-resolution spectra of the short-period binary V723 Per are presented for the first time. The stellar atmospheric parameters of effective temperature, gravitational acceleration, and metallicity are determined as T-eff = 7407 +/- 53 K, log g = 3.98 +/- 0.10 cms(-2), and [Fe/H] = -0.25 +/- 0.10 dex, respectively. Photometric solutions are obtained by analyzing the phased light curves with the Wilson-Devinney method. We found that V723 Per is an Algol-like semi-detached-type near-contact binary with a mass ratio of q = 0.3168 +/- 0.0011. The secondary component is filling the critical Roche lobe, while the primary is nearly filling its Roche lobe (the filling degree is about 80.93%). The primary component contributes about 96% of the luminosity of the total system, and the temperature difference between the two component stars is about 3000 K. All available times of light minimum, including three new observed eclipse times, were used to construct the O - C curve. The period shows a continuous increase at a rate of dP/dt = +7.63(+/- 0.75) x 10(-6) dyr(-1) superposed with a periodic oscillation of amplitude of 0.0392 d and period 17.4 yr. The period increase could be explained by mass transfer from the secondary component to the primary one on the thermal timescale, which is in agreement with the semi-detached configuration. The cyclic change may be caused by the light-time effect due to a massive (M-3 = 3.03 M-circle dot) but quite faint (L-3/L-total similar or equal to 3%) tertiary companion orbiting the central binary. Such a third body might be a black hole or a binary with two nearly identical stars. More observations are required in the future to confirm our conclusion about the cycle variation and tertiary companion.

资助项目National Natural Science Foundation of China[11573063] ; National Natural Science Foundation of China[11611530685] ; Key Science Foundation of Yunnan Province[2017FA001] ; CAS "Light of West China" Program ; CAS Interdisciplinary Innovation Team
项目资助者National Natural Science Foundation of China[11573063, 11611530685] ; Key Science Foundation of Yunnan Province[2017FA001] ; CAS "Light of West China" Program ; CAS Interdisciplinary Innovation Team
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
WOS记录号WOS:000489564600018
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ANGULAR-MOMENTUM LOSS ; UNSOLVED QUADRUPLE SYSTEM ; POSSIBLE MASS ; PARAMETERS ; COMPANION ; DELPHINI ; CATALOG ; CURVES ; STARS
EI入藏号20215211379307
EI主题词Photometry
EI分类号641.3 Mass Transfer - 657.2 Extraterrestrial Physics and Stellar Phenomena - 691.2 Materials Handling Methods - 941.4 Optical Variables Measurements
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/21421
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Tian XM(田晓慢)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P. O. Box 110, 650216 Kunming, China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P. O. Box 110, 650216 Kunming, China
3.University of the Chinese Academy of Science, Yuquan Road 19, Sijingshang Block, 100049 Beijing, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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GB/T 7714
Tian XM,Zhu LY. V723 Persei: A short-period Algol-like near-contact binary[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2019,71(3):9.
APA Tian XM,&Zhu LY.(2019).V723 Persei: A short-period Algol-like near-contact binary.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,71(3),9.
MLA Tian XM,et al."V723 Persei: A short-period Algol-like near-contact binary".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 71.3(2019):9.
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