The progenitors of Type Ia supernovae with long delay times

doi:10.1111/j.1365-2966.2009.15857.x

YNAO OpenIR > 大样本恒星演化研究组

	The progenitors of Type Ia supernovae with long delay times
	Wang B(王博)1,2 ; Li, XD 3; Han ZW(韩占文)1 ; Wang, B (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2010-02-01
卷号	401 期号:4 页码:2729-2738
DOI	10.1111/j.1365-2966.2009.15857.x
产权排序	第1完成单位
收录类别	SCI
关键词	Binaries: Close Stars: Evolution Supernovae: General White Dwarfs
摘要	The nature of the progenitors of Type Ia supernovae (SNe Ia) is still unclear. In this paper, by considering the effect of the instability of accretion disc on the evolution of white dwarf (WD) binaries, we performed binary evolution calculations for about 2400 close WD binaries, in which a carbon-oxygen WD accretes material from a main-sequence (MS) star or a slightly evolved subgiant star (WD + MS channel), or a red-giant star (WD + RG channel) to increase its mass to the Chandrasekhar (Ch) mass limit. According to these calculations, we mapped out the initial parameters for SNe Ia in the orbital period-secondary mass (log P(i) - M(2)(i)) plane for various WD masses for these two channels, respectively. We confirm that WDs in the WD + MS channel with a mass as low as 0.61 M(circle dot) can accrete efficiently and reach the Ch limit, while the lowest WD mass for the WD + RG channel is 1.0 M(circle dot). We have implemented these results in a binary population synthesis study to obtain the SN Ia birthrates and the evolution of SN Ia birthrates with time for both a constant star formation rate and a single starburst. We find that the Galactic SN Ia birthrate from the WD + MS channel is similar to 1.8 x 10(-3) yr(-1) according to our standard model, which is higher than the previous results. However, similar to the previous studies, the birthrate from the WD + RG channel is still low (similar to 3 x 10(-5) yr(-1)). We also find that about one-third of SNe Ia from the WD + MS channel and all SNe Ia from the WD + RG channel can contribute to the old populations (greater than or similar to 1 Gyr) of SN Ia progenitors.
项目资助者	National Natural Science Foundation of China [10873008, 10821061] ; National Basic Research Program of China [007CB815406, 2009CB824800] ; Yunnan Natural Science Foundation [08YJ041001]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0035-8711
URL	查看原文
归档日期	2010-01-19
WOS记录号	WOS:000273687800048
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	MASS-RATIO DISTRIBUTION ; ANGULAR-MOMENTUM EVOLUTION ; SINGLE-DEGENERATE CHANNEL ; ACCRETING WHITE-DWARFS ; SUBDWARF-B-STARS ; X-RAY BINARIES ; STELLAR EVOLUTION ; SPECTROSCOPIC BINARIES ; SYMBIOTIC CHANNEL ; EXPLOSION MODELS
引用统计	被引频次：86[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/4509
专题	大样本恒星演化研究组
通讯作者	Wang, B (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, the Chinese Academy of Sciences, Kunming 650011, China 2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3.Department of Astronomy, Nanjing University, Nanjing 210093, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Wang B,Li, XD,Han ZW,et al. The progenitors of Type Ia supernovae with long delay times[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,401(4):2729-2738.
APA	Wang B,Li, XD,Han ZW,&Wang, B .(2010).The progenitors of Type Ia supernovae with long delay times.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,401(4),2729-2738.
MLA	Wang B,et al."The progenitors of Type Ia supernovae with long delay times".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 401.4(2010):2729-2738.

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