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Analysis of the Spectroscopic Observations of RS CVn Type Star V837 Tau
Astrophysical Bulletin ( IF 1.2 ) Pub Date : 2019-12-10 , DOI: 10.1134/s1990341319040114
A. I. Kolbin , V. V. Shimansky , I. Yu. Alekseev , N. N. Shimanskaya , M. M. Gabdeev , V. V. Tsymbal

We present an analysis of the spectra of the star V837 Tau, which belongs to a class of chromosphere-active RSCVn type stars. The observational material was obtained with the 1.5-m Russian-Turkish telescope RTT-150 and the 2.6-m Shajn telescope of the Crimean astrophysical observatory. To reveal signs of the photosphere spottedness of the primary and to isolate the faint secondary, we performed the deconvolution of the “averaged” spectral profile of the system. By describing the radial velocity curves, we refined the orbital elements of the binary system, and by modeling spectrawe determined the fundamental parameters of the components, as well as the chemical composition of the atmosphere of the bright component. Using the Doppler mapping method we reconstructed the distribution of spots on the surface of the bright star. We show that the spots are concentrated in a belt at medium (about 40) latitudes. The hydrogen line profiles have a variable emission feature in the bright component, and the Hα line exhibits traces of chromospheric activity in the secondary.

中文翻译:

RS CVn型Star V837 Tau的光谱观测分析。

我们提出了对V837 Tau星的光谱分析,该星属于色球活性RSCVn型星。观测材料是使用克里米亚天文观测台的1.5米俄罗斯-土耳其望远镜RTT-150和2.6米沙恩望远镜获得的。为了揭示原色的光球斑点的迹象并隔离微弱的次色,我们对系统的“平均”光谱轮廓进行了反卷积。通过描述径向速度曲线,我们完善了二元系统的轨道元素,并通过对光谱进行建模,确定了组分的基本参数以及明亮组分大气的化学组成。使用多普勒映射方法,我们重构了亮星表面上的斑点分布。我们显示斑点集中在中纬度(约40个)的带中。氢谱线在亮组分中具有可变的发射特征,而氢α线在次级中表现出色球活动的痕迹。
更新日期:2019-12-10
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