On the DB gap of white dwarf evolution： effects of hydrogen mass fraction and convective overshootin

• 作 者: Jie Su Yan Li
• 机 构: NationalAstronomicalObservatories/YunnanObservatory,GraduateUniversityofChineseAcademyofSciences
• 出 处: 天文和天体物理学研究：英文版
• 发表日期: 2010年3期
• 关键词: 质量分数 白矮星 对流层 数据库 超调 差距 演变 氢 convection -- stars： evolution -- stars： white dwarf
• 基金项目: We thank Q. S. Zhang for the many valuable discussions. This work is supported by the National Key Fundamental Research Project through grant 2007CB815406.

We investigate the spectral evolution of white dwarfs by considering the effects of hydrogen mass in the atmosphere and convective overshooting above the convection zone.Our numerical results show that white dwarfs with MH～10-16M⊙ show the DA spectral typ