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The Detached Binary TW Coronae Borealis
New Astronomy ( IF 2 ) Pub Date : 2021-05-01 , DOI: 10.1016/j.newast.2020.101497
Robert H. Nelson

Abstract New radial velocity and photometric data for TW CrB have been obtained, and Roche-based simultaneous analysis of RV and light curve data for the system has been accomplished for the first time, using the 2003 version of the Wilson-Devinney code. Values for the masses and radii have been obtained: M1 = 1.31 (6) Mʘ, M2 = 1.22 (4) Mʘ, and R1 = 1.50 (1) Rʘ, R2 = 1.42 (1) Rʘ. For the luminosities the most likely values are L1 = 2.78 (5) Lʘ and L2 = 2.01 (4) Lʘ. Both stars are likely unevolved. There is general agreement with earlier photometric values for Zhang and Zhang (2003) with the exception of their masses and mass ratio. Because the values in this paper for the latter quantities are based on radial velocities, they are to be preferred.

中文翻译:

分离的二进制 TW Coronae Borealis

摘要 获得了新的 TW CrB 径向速度和光度数据,并首次使用 2003 版的 Wilson-Devinney 代码完成了基于 Roche 的系统 RV 和光变曲线数据的同步分析。已获得质量和半径的值:M1 = 1.31 (6) Mʘ,M2 = 1.22 (4) Mʘ,R1 = 1.50 (1) Rʘ,R2 = 1.42 (1) Rʘ。对于光度,最可能的值是 L1 = 2.78 (5) Lʘ 和 L2 = 2.01 (4) Lʘ。两颗恒星都可能未进化。除了质量和质量比之外,Zhang 和 Zhang (2003) 的早期光度测量值基本一致。因为本文中后一个量的值是基于径向速度的,所以它们是首选。
更新日期:2021-05-01
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