Binary population synthesis for the core-degenerate scenario of type Ia supernova progenitors

被引：4
作者：
Zhou, Wei-Hong [1 ,2 ,3 ]
Wang, Bo [4 ,5 ]
Meng, Xiang-Cun [4 ,5 ]
Liu, Dong-Dong [2 ,4 ,5 ]
Zhao, Gang [1 ]
机构：
[1] Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Yunnan Minzu Univ, Kunming 650031, Peoples R China
[4] Chinese Acad Sci, Yunnan Observ, Kunming 650026, Peoples R China
[5] Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650026, Peoples R China
来源：
RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2015年 / 15卷 / 10期
基金：
中国国家自然科学基金;
关键词：
binaries: close; stars: evolution; supernovae: general; DELAY-TIME DISTRIBUTION; WHITE-DWARF BINARIES; COMMON ENVELOPE; PTF; 11KX; MASS; EVOLUTION; EXPLOSION; CHANNEL; STARS; COLLISIONS;
D O I：
10.1088/1674-4527/15/10/007
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The core-degenerate (CD) scenario has been suggested to be a possible progenitor model of type Ia supernovae (SNe Ia), in which a carbon-oxygen white dwarf merges with the hot CO core of a massive asymptotic giant branch star during their common-envelope phase. However, the SN Ia birthrates for this scenario are still uncertain. We conducted a detailed investigation into the CD scenario and then gave the birthrates for this scenario using a detailed Monte Carlo binary population synthesis approach. We found that the delay times of SNe Ia from this scenario are similar to 70Myr-1400Myr, whichmeans that the CD scenario contributes to young SN Ia populations. The Galactic SN Ia birthrates for this scenario are in the range of similar to 7.4x10(-5) yr(-1) - 3.7 x 10(-4) yr(-1), which roughly accounts for similar to 2%-10% of all SNe Ia. This indicates that, under the assumptions made here, the CD scenario only contributes a small portion of all SNe Ia, which is not consistent with the results of Ilkov & Soker.
引用
收藏
页码：1701 / 1712
页数：12
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