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The double-degenerate model for the progenitors of Type Ia supernovae
Liu DD(刘栋栋)1,2,3; Wang B(王博)1,2,3; Han ZW(韩占文)1,2,3; Liu, D.(Chinese Acad Sci, Yunnan Observ, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China)
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2018-02-01
卷号473期号:4页码:5352-5361
DOI10.1093/mnras/stx2756
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 double-degenerate (DD) model, involving the merging of massive double carbon-oxygen white dwarfs (CO WDs) driven by gravitational wave radiation, is one of the classical pathways for the formation of Type Ia supernovae (SNe Ia). Recently, it has been proposed that the WD+He subgiant channel has a significant contribution to the production of massive double WDs, in which the primary WD accumulates mass by accreting He-rich matter from an He subgiant. We evolved about 1800 CO WD+He star systems and obtained a large and dense grid for producing SNe Ia through the DD model. We then performed a series of binary population synthesis simulations for the DD model, in which the WD+He subgiant channel is calculated by interpolations in the SN Ia production grid. According to our standard model, the Galactic birth rate of SNe Ia is about 2.4 x 10(-3) yr(-1) for the WD+He subgiant channel of the DD model; the total birth rate is about 3.7 x 10(-3) yr(-1) for all channels, reproducing that of observations. Previous theoretical models still have deficit with the observed SNe Ia with delay times <1Gyr and >8Gyr. After considering the WD+He subgiant channel, we found that the delay time distributions are comparable with the observed results. Additionally, some recent studies proposed that the violent WD mergers are more likely to produce SNe Ia based on the DD model. We estimated that the violent mergers through the DD model may contribute to at most 16 per cent of all SNe Ia.
项目资助者National Basic Research Program of China (973 programme)(2014CB845700) ; Natural Science Foundation of China(11673059, 11521303, 11573016, 11390374) ; Chinese Academy of Sciences(KJZD-EW-M06-01, QYZDB-SSW-SYS001) ; Yunnan Province(2013HA005, 2013HB097, 2017HC018)
语种英语
学科领域天文学
文章类型Article
ISSN0035-8711
URL查看原文
WOS记录号WOS:000424117300077
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]WHITE-DWARF BINARIES ; DELAY-TIME DISTRIBUTION ; ASYMPTOTIC-GIANT-BRANCH ; X-RAY SOURCES ; EXPLOSION MODELS ; KPD 1930+2752 ; INITIAL MASS ; HELIUM NOVA ; POPULATION SYNTHESIS ; MERGER REMNANTS
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被引频次:3[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/114a53/12115
专题大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
通讯作者Liu, D.(Chinese Acad Sci, Yunnan Observ, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China)
作者单位1.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, CAS, Kunming 650216, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Center for Astronomical Mega-Science, CAS, Beijing 100012, China
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GB/T 7714
Liu DD,Wang B,Han ZW,et al. The double-degenerate model for the progenitors of Type Ia supernovae[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,473(4):5352-5361.
APA Liu DD,Wang B,Han ZW,&Liu, D..(2018).The double-degenerate model for the progenitors of Type Ia supernovae.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,473(4),5352-5361.
MLA Liu DD,et al."The double-degenerate model for the progenitors of Type Ia supernovae".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 473.4(2018):5352-5361.
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