Abstract

We searched again for a radial (vertical) gradient of the longitudinal magnetic field of the chemically peculiar star \(\alpha^{2}\) CVn. We considered the history of magnetic studies of this object demonstrating large differences in the data obtained with different methods. Such differences can be explained by the fact that the magnetic field sharply drops (by 2 orders stronger than in the case of a dipole structure) with height in the atmosphere. The spectroscopic, spectropolarimetric, and photometric data indicate that the large- and small-scale structure of the atmosphere of \(\alpha^{2}\) CVn has not changed over more than 90 years of observations.

中文翻译：

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关于化学特征星的磁场结构 $$\boldsymbol{\alpha}^{\mathbf{2}}$$ CVn

摘要

我们再次寻找化学奇特恒星\(\alpha^{2}\) CVn 的纵向磁场的径向（垂直）梯度。我们考虑了对该物体的磁性研究的历史，证明了用不同方法获得的数据存在巨大差异。这种差异可以解释为磁场在大气中随高度急剧下降（比偶极结构强 2 个数量级）。光谱、光谱偏振和光度数据表明， \(\alpha^{2}\) CVn的大气大尺度和小尺度结构在 90 多年的观测中没有发生变化。