Mass accumulation efficiency in helium shell flashes for various white dwarf masses

Mariko Kato, Izumi Hachisu

研究成果: Article査読

105 被引用数 (Scopus)

抄録

We have calculated the mass accumulation efficiency during helium shell flashes on white dwarfs (WDs) of mass 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, and 1.35 M for the helium accretion rates logMHe (M yr-1) = -7.4 to -5.8. This efficiency is a crucial factor for binary evolutions of Type Ia supernovae. For less massive WDs (<0.8 M) no wind mass loss occurs, and all the accreted mass accumulates on the WD if the Roche lobe size is large enough. The efficiency takes the minimum values in between 1.1 and 1.2 M WD for a given mass accretion rate, as well as increases in both less and more massive WDs. The mass accumulation efficiency is larger than 0.5 for log MHe ≥ -6.72 in all the WD masses.

本文言語English
ページ(範囲)L129-L132
ジャーナルAstrophysical Journal
613
2 II
DOI
出版ステータスPublished - 2004 10月 1
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 宇宙惑星科学

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