Strong magnetic field of the peculiar red supergiant VY Canis Majoris
Description
<jats:title>Abstract</jats:title><jats:p>We report on magnetic field measurements associated with the well-known extreme red supergiant (RSG), VY Canis Majoris (VY CMa). We measured both linear and circular polarization of the SiO <jats:italic>v</jats:italic> = 0, <jats:italic>J</jats:italic> = 1 − 0 transition using a sensitive radio interferometer. The measured magnetic field strengths are surprisingly high. A lower limit for the field strength is expected to be at least ~ 10 Gauss based on the high degree of linear polarization. Since the field strengths are very high, the magnetic field must be a key element in understanding the stellar evolution of VY CMa as well as the dynamical and chemical evolution of the complex circumstellar envelope of the star.</jats:p>
Journal
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- Proceedings of the International Astronomical Union
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Proceedings of the International Astronomical Union 13 (S336), 391-392, 2017-09
Cambridge University Press (CUP)
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Details 詳細情報について
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- CRID
- 1360567183057910272
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- ISSN
- 17439221
- 17439213
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- Article Type
- journal article
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- Data Source
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- Crossref
- KAKEN
