Double White Dwarf Merger Rates

被引：0
作者：
Toonen, Silvia [1 ]
Nelemans, Gijs [1 ]
Zwart, Simon Portegies [2 ]
机构：
[1] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, POB 9010, NL-6500 GL Nijmegen, Netherlands
[2] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands
来源：
BINARY PATHS TO TYPE IA SUPERNOVAE EXPLOSIONS | 2013年 / 281期
关键词：
stars:; evolution; white dwarfs; binaries: close; SUPERNOVA RATES; EVOLUTION;
D O I：
10.1017/S1743921312015086
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Type Ia supernovae (SNe Ia) are very successfully used as standard candles on cosmological distance scales, but so far the nature of the progenitor(s) is unclear. A possible scenario for SNe Ia are merging carbon/oxygen white dwarfs with a combined mass exceeding the Chandrasekhar mass. We determine the theoretical rates and delay time distribution of these mergers for two different common envelope prescriptions and metallicities. The shape of the delay time distributions is rather insensitive to the assumptions. The normalization is a factor similar to 3-13 too low compared to observations.
引用
收藏
页码：223 / +
页数：2
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