A closer look at non-interacting He stars as a channel for producing the old population of type Ia supernovae
文献类型:期刊论文
作者 | Liu ZW(柳正伟)1,2,3; Stancliffe, Richard J.4 |
刊名 | Astronomy and Astrophysics |
出版日期 | 2020-09-01 |
卷号 | 641页码:6 |
ISSN号 | 0004-6361 |
关键词 | supernovae: general binaries: close |
DOI | 10.1051/0004-6361/202038443 |
通讯作者 | Liu, Zhengwei(zwliu@ynao.ac.cn) |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | The nature of the progenitors of type Ia supernovae (SNe Ia) remains a mystery. Binary systems consisting of a white dwarf (WD) and a main-sequence (MS) donor are potential progenitors of SNe Ia, in which a thermonuclear explosion of the WD may occur when its mass reaches the Chandrasekhar limit during accretion of material from a companion star. In the present work, we address theoretical rates and delay times of a specific MS donor channel to SNe Ia, in which a helium (He) star + MS binary produced from a common envelope event subsequently forms a WD + MS system without the He star undergoing mass transfer by Roche lobe overflow. By combining the results of self-consistent binary evolution calculations with population synthesis models, we find that the contribution of SNe Ia in this channel is around 2.0 × 10-4 yr-1. In addition, we find that delay times of SNe Ia in this channel cover a range of about 1.0-2.6 Gyr, and almost all SNe Ia produced in this way (about 97%) have a delay time of 1 Gyr. While the rate of SN Ia in this work is about 10% of the overall SN Ia rate, the channel represents a possible contribution to the old population (1-3 Gyr) of observed SNe Ia. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
WOS关键词 | SUB-CHANDRASEKHAR SUPERNOVAE ; MASS ACCUMULATION EFFICIENCY ; CORE-DEGENERATE SCENARIO ; DELAY-TIME DISTRIBUTION ; ACCRETING WHITE-DWARFS ; HELIUM SHELL FLASHES ; PROGENITOR MODEL ; COMMON ENVELOPE ; RATES ; EVOLUTION |
资助项目 | National Natural Science Foundation of China (NSFC)[11873016] ; Chinese Academy of Sciences ; STFC, through the University of Hull Consolidated grant[ST/R000840/1] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | EDP SCIENCES S A |
WOS记录号 | WOS:000571554300008 |
资助机构 | National Natural Science Foundation of China (NSFC)[11873016] ; Chinese Academy of Sciences ; STFC, through the University of Hull Consolidated grant[ST/R000840/1] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/23683] |
专题 | 云南天文台_大样本恒星演化研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Liu ZW(柳正伟) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences (CAS), 396 Yangfangwang, Guandu District, Kunming, 650216, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Cas, Kunming, 650216, China 3.Center for Astronomical Mega-Science, Cas, 20A Datun Road, Chaoyang District, Beijing, 100012, China 4.E. A. Milne Centre for Astrophysics, Department of Physics and Mathematics, University of Hull, HU6 7RX, United Kingdom |
推荐引用方式 GB/T 7714 | Liu ZW,Stancliffe, Richard J.. A closer look at non-interacting He stars as a channel for producing the old population of type Ia supernovae[J]. Astronomy and Astrophysics,2020,641:6. |
APA | Liu ZW,&Stancliffe, Richard J..(2020).A closer look at non-interacting He stars as a channel for producing the old population of type Ia supernovae.Astronomy and Astrophysics,641,6. |
MLA | Liu ZW,et al."A closer look at non-interacting He stars as a channel for producing the old population of type Ia supernovae".Astronomy and Astrophysics 641(2020):6. |
入库方式: OAI收割
来源:云南天文台
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