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Observations of Radial Velocity Variability in Stars from the Spectra Obtained with the BTA Fiber-Fed Spectrograph in High Spectral Resolution Mode
Astrophysical Bulletin ( IF 1.3 ) Pub Date : 2021-01-14 , DOI: 10.1134/s1990341320040033
T. E. Burlakova , G. G. Valyavin , V. N. Aitov , G. A. Galazutdinov , A. F. Valeev , I. A. Yakunin , D. R. Gadelshin , V. D. Bychkov , A. V. Tavrov , A. E. Ivanova , O. I. Korablev

Abstract—We present the results of observations of radial velocity variability in stars with exoplanets. Observations of a number of stars with characteristic stellar magnitudes from 8.54m to 10.5m were carried out using a new high-resolution (R = 35 000–120 000) fiber-fed spectrograph mounted at the foundation of the 6-m BTA telescope, in the mode of resolutions from R = 45 000 to R = 65 000 with a simultaneous registration of the calibration spectrum of a thorium–argon hollow cathode lamp. The achieved characteristic measurement accuracies ranged from a few to several tens of m s−1. In the future, the thorium-argon lamp will be supplemented with a Fabri–Perot etalon to reach the radial velocity measurement accuracy in stars up to 1 m s−1.



中文翻译:

从BTA光纤进给光谱仪以高光谱分辨率模式获得的光谱中观测星的径向速度变化

摘要—我们介绍了系外行星恒星径向速度变化的观测结果。从8开始观测到许多具有特征恒星的恒星54至10 5进行了使用新的高清晰度([R = 35 000-120 000)的光纤馈送摄谱仪安装在6米BTA望远镜的基础上,在分辨率从所述模式- [R = 45 000〜- [R = 65 000同时注册registration-氩空心阴极灯的校准光谱。达到的特性测量精度范围从几毫秒到几十毫秒-1。将来,the氩灯将补充有Fabri-Perot标准具,以达到高达1 ms -1的恒星径向速度测量精度。

更新日期:2021-01-14
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