首次详细分析了偏心双星v990her的天体物理特性

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Revista Mexicana de Astronomia y Astrofisica Pub Date : 2021-10-01 DOI:10.22201/ia.01851101p.2021.57.02.09

E. Kıran, V. Bakış, H. Bakış, Ö. Değirmenci

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引用次数: 0

摘要

利用轨道周期P=8.193315±0.000003天的偏心双星系统V990 Her的光度和光谱数据，给出了其精确的物理参数。得到各组分的物性参数为Teff1=8000±200 K, Teff2=7570±200 K, M1=2.01±0.07 M突，M2=1.83±0.03 M突，R1=2.22±0.02 R突，R2=2.12±0.01 R突，log(L1/L突)=1.25±0.04,log(L2/L突)=1.12±0.05。我们的研究结果表明，这两个组成部分都是由年龄为6.3×108年的零年龄主层序略微演化而来的。我们估计了一个周期为U=14683±2936年的系统的侧移运动，并首次导出了组件的内部结构常数。

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THE FIRST DETAILED ANALYSIS ON THE ASTROPHYSICAL PROPERTIES OF THE ECCENTRIC BINARY V990 HER

We present accurate physical parameters of the eccentric binary system V990 Her which has an orbital period of P=8.193315±0.000003 days using its photometric and spectroscopic data. The physical parameters of the components were derived as Teff1=8000±200 K, Teff2=7570±200 K, M1=2.01±0.07 Mʘ, M2=1.83±0.03 Mʘ, R1=2.22±0.02 Rʘ, R2=2.12±0.01 Rʘ, log(L1/Lʘ)=1.25±0.04, log(L2/Lʘ)=1.12±0.05. Our findings revealed that both components are slightly evolved from the zero-age main sequence with an age of 6.3×108 years. We estimated an apsidal motion with a period of U=14683±2936 years in the system and the internal structure constants of the components were derived for the first time.

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来源期刊

Revista Mexicana de Astronomia y Astrofisica 地学天文-天文与天体物理

CiteScore

1.30

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Revista Mexicana de Astronomía y Astrofísica, founded in 1974, publishes original research papers in all branches of astronomy, astrophysics and closely related fields. Two numbers per year are issued and are distributed free of charge to all institutions engaged in the fields covered by the RMxAA.