Type Ia supernovae in NS+He star systems and the isolated mildly recycled pulsars | |
Guo YL(郭云浪)2,3,4; Wang B(王博)2,3,4; Wu CY(吴程远)2,3,4; Chen, Wen-Cong1; Jiang, Long1; Han ZW(韩占文)2,3,4 | |
刊名 | Monthly Notices of the Royal Astronomical Society |
2023-11-01 | |
卷号 | 526期号:1页码:932-941 |
关键词 | binaries: close pulsars: general supernovae: general |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnras/stad2578 |
产权排序 | 第1完成单位 |
文献子类 | Journal article (JA) |
英文摘要 | Type Ia supernovae (SNe Ia) are successful cosmological distance indicators and important element factories in the chemical evolution of galaxies. They are generally thought to originate from thermonuclear explosions of carbon-oxygen white dwarfs in close binaries. However, the observed diversity among SNe Ia implies that they have different progenitor models. In this article, we performed the long-term evolution of NS+He star binaries with different initial He star masses () and orbital periods () for the first time, in which the He star companions can explode as SNe Ia eventually. Our simulations indicate that after the He stars develop highly degenerate oxygen-neon (ONe) cores with masses near the Chandrasekhar limit, explosive oxygen burning can be triggered due to the convective Urca process. According to these calculations, we obtained an initial parameter space for the production of SNe Ia in the plane. Meanwhile, we found that isolated mildly recycled pulsars can be formed after He stars explode as SNe Ia in NS+He star binaries, in which the isolated pulsars have minimum spin periods () of ∼30-110 ms and final orbital velocities of, corresponding to initial orbital periods of 0.07-10 d. Our work suggests that the NS+He star channel may contribute to the formation of isolated mildly recycled pulsars with velocity in observations, and such isolated pulsars should locate in the region of pulsars with massive white dwarf companions in the diagram. © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
URL标识 | 查看原文 |
资助项目 | N/A |
语种 | 英语 |
资助机构 | N/A |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26367] |
专题 | 云南天文台_大样本恒星演化研究组 |
作者单位 | 1.School of Science, Qingdao University of Technology, Qingdao, 266525, China 2.University of Chinese Academy of Sciences, Beijing, 100049, China; 3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming, 650216, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China; |
推荐引用方式 GB/T 7714 | Guo YL,Wang B,Wu CY,et al. Type Ia supernovae in NS+He star systems and the isolated mildly recycled pulsars[J]. Monthly Notices of the Royal Astronomical Society,2023,526(1):932-941. |
APA | Guo YL,Wang B,Wu CY,Chen, Wen-Cong,Jiang, Long,&Han ZW.(2023).Type Ia supernovae in NS+He star systems and the isolated mildly recycled pulsars.Monthly Notices of the Royal Astronomical Society,526(1),932-941. |
MLA | Guo YL,et al."Type Ia supernovae in NS+He star systems and the isolated mildly recycled pulsars".Monthly Notices of the Royal Astronomical Society 526.1(2023):932-941. |
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