论文标题
OBA星星III的光谱中的超快线轮廓变化：A0 Star $α^2 \，$ CVN，新结果
Superfast Line Profile Variations in the Spectra of OBA Stars III: A0 Star $α^2\,$CVn, New Results
论文作者
论文摘要
这项工作是对早期型恒星光谱中线谱的超快变异性的研究的延续。频谱中的线条曲线变化（LPV）是一种化学特殊的A0VP星$α^2 \，$ CVN使用2020年1月6日，在2020年的2020年1月6日与6米BTA望远镜在俄罗斯特殊天文学（SAO）的6米BTA望远镜（SAO）进行了观察，该观测与俄罗斯科学界（SAO）相比（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）（RAS）配备了MSSSPECTRECHECHEMESSPECTRISPRECTRATION。检测到h $_β$，fe \，ii和cr \，ii行的常规短期定期变化，周期为$ \ sim \！$ 4到$ \ sim \！$ 140分钟。确定所有观测值的恒星的磁场。在整个观测持续时间内，测量的纵向磁场成分的平均值约为$ \ $ 600 \，G，它接近众所周知的磁场相曲线所期望的值。
This work is a continuation of the studies of the ultrafast variability of line profiles in the spectra of early-type stars. Line profile variations (LPVs) in the spectrum a chemically peculiar A0Vp star $α^2\,$CVn are investigated using the January 6, 2020 observations carried out with the 6-meter BTA telescope at Special Astrophysical observatory (SAO) of the Russian Academy of Sciences (RAS) equipped with the MSS spectrograph. Regular short-term periodic variations of the H$_β$, Fe\,II, and Cr\,II lines were detected with periods ranging from $\sim\!$4 to $\sim\!$140 minutes. The magnetic field of the star was determined for all observations. The average measured longitudinal magnetic field component over the entire duration of observations is about $\approx$600\,G, which is close to the value expected from the well-known magnetic field phase curve.
