Recurrent novae and long-term evolution of mass-accreting white dwarfs – toward the accurate mass retention efficiency

黄金时代 Pub Date : 2017-11-05 DOI:10.22323/1.315.0056
M. Kato, I. Hachisu, H. Saio
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引用次数: 4

Abstract

The mass growth rate of mass-accreting white dwarfs (WDs) is a key factor in binary evolution scenarios toward Type Ia supernovae. Many authors have reported very different WD mass increasing rates. In this review, we clarify the reasons for such divergence, some of which come from a lack of numerical techniques, usage of old opacities, different assumptions for binary configurations, inadequate initial conditions, and unrealistic mass-loss mechanisms. We emphasize that these assumptions should be carefully chosen in calculating the long-term evolution of accreting WDs. Importantly, the mass-loss mechanism is the key process determining the mass retention efficiency: the best approach involves correctly incorporating the optically thick wind because it is supported by the multiwavelength light curves of novae.
复发新星与质量吸积白矮星的长期演化——迈向精确的质量保持效率
质量吸积白矮星(WDs)的质量增长速度是Ia型超新星双星演化场景的关键因素。许多作者报告了不同的WD质量增加速率。在这篇综述中,我们澄清了这种分歧的原因,其中一些是由于缺乏数值技术,使用旧的不透明,对二元结构的不同假设,不充分的初始条件,以及不现实的质量损失机制。我们强调,在计算逐渐增加的WDs的长期演变时,应谨慎选择这些假设。重要的是,质量损失机制是决定质量保持效率的关键过程:最好的方法包括正确地结合光学厚风,因为它是由新星的多波长光曲线支持的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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