Two W-subtype contact binaries: GQ Boo and V1367 Tau
Two W-subtype contact binaries: GQ Boo and V1367 Tau
复制标题
两个 W 亚型接触双星：GQ Boo 和 V1367 Tau
DOI：
10.1093/mnras/stw3153
复制
发表时间：
2017-04
影响因子：
4.8
通讯作者：
Wu Yue
中科院分区：
文献类型：
--
作者：
Zhang Jia;Qian Sheng-Bang;Han Zhong-Tao;Wu Yue
用一种新的方法观测和分析了两个接触双星GQ Boo和V1367 Tau的绝对参数。光变曲线分析表明，它们都是明显的W型接触双星，质量大得多，但温度明显较低（M2/M12和4，T2/T10.95和0.94）。利用O-C图研究了轨道周期的变化，认为最小值的出现受星星表面长期磁场活动的影响较大，不能代表真实的周期变化。通过光变曲线分析得到了质量-半径关系，这与平均密度是等价的。在大多数情况下，密度和温度可以决定其他绝对参数。利用PARSEC提供的几乎完整的星星参数空间，获得了近似的质量和半径（GQ Boo为0.52 ± 0.08 M和1.01 ± 0.15 M，V1367 Tau为0.22 ± 0.01 M和0.92 ± 0.06 M）。质量-半径关系是计算双星质量和半径的一个被忽视的有用工具，特别是对于分离双星。
Two contact binaries, GQ Boo and V1367 Tau, were observed and analysed with a new method to obtain the absolute parameters. The light-curve analysis shows that both of them are obvious W-subtype contact binaries, with much more massive but apparently cooler components (M2/M1 2 and 4, T2/T1 0.95 and 0.94). The orbital periods were studied using the O–C diagrams, and it is thought that the minima timings were heavily affected by the longstanding magnetic activities on the star surface, so the minima timings cannot represent the real period changes. The mass–radius relationships were proposed by the light-curve analysis alone, which is equivalent to the mean density. The density and temperature can determine the other absolute parameters in most of the time. With the almost complete star parameter space provided by PARSEC, approximate masses and radii were obtained (0.52 ± 0.08 M and 1.01 ± 0.15 M for GQ Boo, and 0.22 ± 0.01 M and 0.92 ± 0.06 M for V1367 Tau). The mass–radius relationship is a neglected useful tool to calculate the mass and radius, especially for the detached binaries.
登录
查看更多内容
DOI：
--
发表时间：
2017-11
期刊：
--
影响因子：
--
作者：
Xianming Liu;D. Shemansky;J. Yoshii;Melinda J. Liu;P. Johnson;C. P. Malone;M. Khakoo
通讯作者：
Xianming Liu;D. Shemansky;J. Yoshii;Melinda J. Liu;P. Johnson;C. P. Malone;M. Khakoo
DOI：
10.1088/0004-637x/739/1/25
发表时间：
2011-06
期刊：
The Astrophysical Journal
影响因子：
--
作者：
S. Majewski;G. Zasowski;D. Nidever
通讯作者：
S. Majewski;G. Zasowski;D. Nidever
基于干涉数据对矮星和巨星的有效温度与颜色进行经验金属丰度校准
影响因子：
4.8
作者：
Huang Y;Liu X W;Yuan H B;Xiang M S;Chen B Q;Zhang H W
通讯作者：
Zhang H W
影响因子：
1.9
作者：
M. Hoffmann;U. Hopp
通讯作者：
M. Hoffmann;U. Hopp
影响因子：
1.8
作者：
Yue Wu;A. Luo;Haining Li;Jian-rong Shi;P. Prugniel;Yan-chun Liang;Yongheng Zhao;Jian-Na Zhang
通讯作者：
Yue Wu;A. Luo;Haining Li;Jian-rong Shi;P. Prugniel;Yan-chun Liang;Yongheng Zhao;Jian-Na Zhang