The ring around SN 1987A and rotation of the progenitor

DOI オープンアクセス

説明

The ring discovered around SN 1987A is likely to be related to the rotation of the progenitor. Two rotational effects of the progenitor of SN 1987A have been studied : (1) mass-shedding from the equator and (2) an aspherical mass distribution in a stellar wind due to the direction-dependent mass loss. With approximate models for a rotating star and a wind, the following results have been obtained. First, if the rotational velocity of the progenitor at the main sequence exceeds 270 km/s, mass-shedding can occur (i.e., the angular velocity can exceed the critical angular velocity) at the blue supergiant stage. Second, the stellar wind combined with the rotation forms an aspherical mass distribution in the distant region from the star

収録刊行物

詳細情報 詳細情報について

  • CRID
    1873961342785131392
  • DOI
    10.1086/171422
  • ISSN
    15384357
    0004637X
  • データソース種別
    • OpenAIRE

問題の指摘

ページトップへ