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Double CO WD systems from the WD plus He subgiant channel and type Ia supernovae
Liu DD(刘栋栋)1,2,3; Wang B(王博)1,2,3; Wu CY(吴程远)1,2,3
Source PublicationOPEN ASTRONOMY
2017-04-01
Volume26Issue:1Pages:195-198
DOI10.1515/astro-2017-0436
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Stars: Evolution Supernovae: General
Abstract

Recent studies suggested that at least some of the observed SNe Ia originate from the double-degenerate model, which involves the merging of double carbon-oxygen white dwarfs (CO WDs). However, the delay time distributions predicted by previous theoretical studies are inconsistent with the observed SNe Ia at the early epoches of < 1 Gyr and old epoches of > 8 Gyr. Previous studies suggested that the CO WD+He subgiant channel has a significant contribution to the formation of massive double CO WDs, the merging of which may produce SNe Ia. In the present work, we added this channel into the double-degenerate model to investigate its influence on the delay time distributions of SNe Ia. We found that the delay time distributions would match better with the observed SNe Ia when the CO WD+He subgiant channel is included in the double-degenerate model.

Funding ProjectNatural Science Foundation of China[11390374]
Funding OrganizationNatural Science Foundation of China[11390374]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherDE GRUYTER POLAND SP ZOO
Publication PlaceBOGUMILA ZUGA 32A STR., 01-811 WARSAW, POLAND
ISSN2543-6376
URL查看原文
WOS IDWOS:000427930200013
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDELAY-TIME DISTRIBUTION ; WHITE-DWARFS ; PROGENITORS ; STARS ; MERGERS ; MASS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12298
Collection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
Corresponding AuthorLiu DD(刘栋栋)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu DD,Wang B,Wu CY. Double CO WD systems from the WD plus He subgiant channel and type Ia supernovae[J]. OPEN ASTRONOMY,2017,26(1):195-198.
APA Liu DD,Wang B,&Wu CY.(2017).Double CO WD systems from the WD plus He subgiant channel and type Ia supernovae.OPEN ASTRONOMY,26(1),195-198.
MLA Liu DD,et al."Double CO WD systems from the WD plus He subgiant channel and type Ia supernovae".OPEN ASTRONOMY 26.1(2017):195-198.
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