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Abstract <p>The paper is aimed at studying the variability of the Be star <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11755_2025_5245_Article_IEq1.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="14" /> </InlineMediaObject> <EquationSource Format="TEX">\(\omega\)</EquationSource> <!--ASPBull2460077Kholtygin-m3--> </InlineEquation> Ori. We analyzed the optical spectra of the star taken with the 2.5-m SAI25 telescope of the Caucasus Mountain Observatory (CMO) of SAI MSU. A rapid variability of the H and He line profiles with periods from 37 to 150 minutes are revealed. The photometric light curves of <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11755_2025_5245_Article_IEq1.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="14" /> </InlineMediaObject> <EquationSource Format="TEX">\(\omega\)</EquationSource> <!--ASPBull2460077Kholtygin-m4--> </InlineEquation> Ori obtained with the TESS satellite regular brightness variations with periods of 0.94 and 1.86 days have been detected. We also discuss X-ray observations and search for a magnetic field of <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11755_2025_5245_Article_IEq1.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="14" /> </InlineMediaObject> <EquationSource Format="TEX">\(\omega\)</EquationSource> <!--ASPBull2460077Kholtygin-m5--> </InlineEquation> Ori.</p>

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Optical and X-Ray Variability of Be Stars: \(\omega\) Ori

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • A. F. Kholtygin,
  • A. V. Dodin,
  • I. A. Yakunin

摘要

Abstract

The paper is aimed at studying the variability of the Be star \(\omega\) Ori. We analyzed the optical spectra of the star taken with the 2.5-m SAI25 telescope of the Caucasus Mountain Observatory (CMO) of SAI MSU. A rapid variability of the H and He line profiles with periods from 37 to 150 minutes are revealed. The photometric light curves of \(\omega\) Ori obtained with the TESS satellite regular brightness variations with periods of 0.94 and 1.86 days have been detected. We also discuss X-ray observations and search for a magnetic field of \(\omega\) Ori.