A Compact Object with a K-type Star Companion in the Solar Neighborhood: A Wide Postcommon Envelope Binary with a White Dwarf Candidate
文献类型：期刊论文
| 作者 | Lin, Jie2; Chen HL(陈海亮)1,6; Wang, Bojun5; Luo, Yudong4; Tang, Wenshi2; Huang, Bo3 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-02-20 |
| 卷号 | 998期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae3c77 |
| 产权排序 | 第2完成单位 |
| 文献子类 | Article |
| 英文摘要 | Post-common envelope binaries (PCEBs) consisting of a white dwarf (WD) plus a main-sequence star can constrain current prescriptions of common envelope evolution (CEE) and calibrate theoretical models of binary formation and evolution. Most PCEBs studied to date have typical orbital periods of hours to a few days and can be well explained by assuming inefficient CEE to expel the envelope. However, there are currently several systems with relatively wide orbital periods (>18 days). To explain these wide PCEBs, additional sources of energy have been suggested to be taken into account. Here, we present the discovery and observational characterization of a compact object (M >= 0.58 M-circle dot) with a K-type star companion in the solar neighborhood (d similar to 112 pc) and an orbital period of P-orb similar to 14 days. The compact object binary is likely to be a system consisting of a WD and a barium dwarf, making it the shortest-period barium star binary candidate known. Such a system with an orbital period within the gap between tight and wide binaries provides a test of whether additional energy sources are required to explain its formation. Using binary evolution models, we investigate the evolutionary history of this wide PCEB system and find that the observed properties of this source can be explained without invoking any extra energy source. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | STELLAR ATMOSPHERIC PARAMETERS ; NEUTRON-STAR ; DATA RELEASE ; CONVECTIVE BOUNDARIES ; PATHWAYS SURVEY ; FGK STARS ; EVOLUTION ; LAMOST ; MODULES ; GAIA |
| 资助项目 | National Natural Science Foundation of China[12403055]; National Natural Science Foundation of China[12221003]; National Natural Science Foundation of China[12335009]; National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12333008 and 12422305]; Postdoctoral Fellowship Program of CPSF[GZC20240905] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001696145100001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China[12403055, 12221003, 12335009, 12288102, 12333008 and 12422305] ; Postdoctoral Fellowship Program of CPSF[GZC20240905] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28991]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 通讯作者 | Lin, Jie |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 2.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China; j.lin@pku.edu.cn; 3.Institut de Ciències de l’Espai (ICE-CSIC), Campus UAB, Can Magrans S/N, E-08193 Cerdanyola del Vallès, Catalonia, Spain 4.School of Physics, Peking University, and Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People’s Republic of China; 5.National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China; 6.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People’s Republic of China; |
| 推荐引用方式 GB/T 7714 | Lin, Jie,Chen HL,Wang, Bojun,et al. A Compact Object with a K-type Star Companion in the Solar Neighborhood: A Wide Postcommon Envelope Binary with a White Dwarf Candidate[J]. ASTROPHYSICAL JOURNAL,2026,998(2). |
| APA | Lin, Jie,陈海亮,Wang, Bojun,Luo, Yudong,Tang, Wenshi,&Huang, Bo.(2026).A Compact Object with a K-type Star Companion in the Solar Neighborhood: A Wide Postcommon Envelope Binary with a White Dwarf Candidate.ASTROPHYSICAL JOURNAL,998(2). |
| MLA | Lin, Jie,et al."A Compact Object with a K-type Star Companion in the Solar Neighborhood: A Wide Postcommon Envelope Binary with a White Dwarf Candidate".ASTROPHYSICAL JOURNAL 998.2(2026). |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。