A modeling of the super-Eddington luminosity in Nova outbursts: V1974 Cygni

Mariko Kato, Izumi Hachisu

研究成果: Article査読

14 被引用数 (Scopus)

抄録

We have modeled nova light curves exceeding the Eddington luminosity. It has been suggested that a porous structure develops in nova envelopes during the super-Eddington phase and that the effective opacity is much reduced for such a porous atmosphere. Based on this reduced opacity model, we have calculated envelope structures and light curves of novae. The optically thick wind model is used to simulate nova winds. We find that the photospheric luminosity and the wind mass-loss rate increase inversely proportional to the reducing factor of opacities but that the wind velocity hardly changes. We also reproduce the optical light curve of V1974 Cygni (Nova Cygni 1992) in the super-Eddington phase, which lasts 13 days from the optical peak 1.7 mag above the Eddington luminosity.

本文言語English
ページ(範囲)L117-L120
ジャーナルAstrophysical Journal
633
2 II
DOI
出版ステータスPublished - 2005 11 10
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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