Eccentric millisecond pulsar plus subdwarf B star from rotationally delayed accretion-induced-collapse scenario
文献类型：期刊论文
| 作者 | Meng XC(孟祥存) |
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
 |
| 出版日期 | 2026-04-22 |
| 卷号 | 43 |
| 关键词 | (stars:) Subdwarfs white dwarfs binaries: general |
| ISSN号 | 1323-3580 |
| DOI | 10.1017/pasa.2026.10189 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Eccentric millisecond pulsar + helium white dwarf (MSP + He WD) systems have attracted increasing attention, with the rotationally delayed accretion-induced collapse (RD-AIC) scenario proposed as a possible formation channel. Given the similarity between the formation channels of He WDs and subdwarf B (sdB) stars, eccentric MSP + sdB binaries could also exist in the Galaxy, though none have been detected so far. Theoretical predictions of their properties would greatly aid in their discovery. Here, within the RD-AIC framework, I present predictions for their orbital parameters, including MSP mass, secondary mass, eccentricity, and orbital period. Based on two detailed binary population synthesis calculations, I estimate their Galactic birth rate to be (0.67-1.5) & times; 10(-4)yr(-1). Then, a very conservative upper limit for their total number in the Galaxy is 15 000, implying that the most optimistic fraction of eccentric MSP + sdB systems among all MSP + sdB populations could reach up to 55%. These systems are relatively young, with ages on the order of a few hundred Myr, and should therefore be found in relatively young environments. Furthermore, most MSPs in such eccentric binaries have masses below 1.5 M-circle dot. I also briefly discuss their potential future applications in various astrophysical contexts. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | EDINBURGH BLDG, SHAFTESBURY RD, CB2 8RU CAMBRIDGE, ENGLAND |
| WOS关键词 | COMPANIONS |
| 资助项目 | National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12333008]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160303]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160000]; National Science Foundation of China; National Key R&D Program of China[2021YFA1600403]; Yunnan Fundamental Research Projects[202401BC070007]; Yunnan Fundamental Research Projects[202201BC070003]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; Yunnan Revitalization Talent Support Program - Yunling Scholar Project[202305AB350003]; China Manned Space Program[CMS-CSST-2025-A13] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001757134200001 |
| 出版者 | CAMBRIDGE UNIV PRESS |
| 资助机构 | National Natural Science Foundation of China[12288102, 12333008] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160303, XDB1160000] ; National Science Foundation of China ; National Key R&D Program of China[2021YFA1600403] ; Yunnan Fundamental Research Projects[202401BC070007, 202201BC070003] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; Yunnan Revitalization Talent Support Program - Yunling Scholar Project[202305AB350003] ; China Manned Space Program[CMS-CSST-2025-A13] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29168]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 通讯作者 | Meng XC(孟祥存) |
| 作者单位 | International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research, Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, China |
| 推荐引用方式 GB/T 7714 | Meng XC. Eccentric millisecond pulsar plus subdwarf B star from rotationally delayed accretion-induced-collapse scenario[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,2026,43. |
| APA | 孟祥存.(2026).Eccentric millisecond pulsar plus subdwarf B star from rotationally delayed accretion-induced-collapse scenario.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,43. |
| MLA | 孟祥存."Eccentric millisecond pulsar plus subdwarf B star from rotationally delayed accretion-induced-collapse scenario".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA 43(2026). |
入库方式： OAI收割
来源：云南天文台
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