中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 大样本恒星演化研究组
Discovery and Characterization of White Dwarf-FGK Main-sequence Binaries within the Optical Main-sequence Locus

文献类型：期刊论文

作者Yang MK(杨明宽)1,2,3,4; Yuan, Hailong1; Yang, Xiaozhen1,2; Bai, Zhongrui1; He, Yuji1,5; Xiong JP(熊建萍)3,4; Li J(李蛟)3,4; Wang, Mengxin1; Dong, Yiqiao1; Jiang, Ziyue1,2
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2026-06-01
卷号284期号:2
ISSN号0067-0049
DOI10.3847/1538-4365/ae5bc2
产权排序第3完成单位
文献子类Article
英文摘要White dwarf-main sequence (WDMS) binaries provide important laboratories for studying binary evolution and the formation of low-mass white dwarfs. In this work, we identify 654 reliable WDMS candidates with FGK-type companions from an initial set of 772 ultraviolet-excess sources, selected using stellar atmospheric parameters from LAMOST spectroscopy and subsequently refined with Gaia DR3 astrometry and photometry together with ultraviolet data from GALEX. Candidates were selected based on ultraviolet excess relative to the Gaia main-sequence (MS) locus and refined using isochrone constraints to exclude systems inconsistent with MS companions. Binary spectral energy distribution fitting yields effective temperatures and radii for both components, as well as distance and extinction estimates. The MS companions are dominated by G-type stars (similar to 52%), with comparable fractions of F- and K-type companions, and no A-type primaries. Using white-dwarf (WD) evolutionary cooling models, we find that the WD components are predominantly low-mass (M-WD similar to 0.2-0.4 M-circle dot), including a substantial population of extremely low-mass (<0.3 M-circle dot) WDs likely produced through binary interaction. The WDs are generally hot (similar to 1.5 & times; 10(4) K), consistent with the ultraviolet selection bias favoring luminous, large-radius WDs. Multiepoch LAMOST radial velocities show larger amplitudes than those of a comparison sample of MS stars, supporting the close-binary nature of these systems. Although subject to strong selection effects, the catalog offers a clean and well-characterized sample of FGK+WD binaries.
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CVN-TYPE BINARIES ; PATHWAYS SURVEY ; DATA RELEASE ; CONVECTIVE BOUNDARIES ; MESA ISOCHRONES ; GAIA EDR3 ; CATALOG ; MODULES ; LAMOST ; STARS
资助项目Strategic Priority Program of CAS[XDB1160302]; Strategic Priority Program of CAS[XDB1160000]; Strategic Priority Program of CAS[XDB1160200]; International Centre of Supernovae, Yunnan Key Laboratory[202505AV340004]; Youth Innovation Promotion Association of CAS[20200060]; National K&D Program of China[2021YFA1600401]; National K&D Program of China[2021YFA1600403]; National K&D Program of China[2022YFA1603002]; National K&D Program of China[2023YFA1607901]; National Natural Science Foundation of China[12125303]; National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12273056]; National Natural Science Foundation of China[12090041]; National Natural Science Foundation of China[11873066]; National Natural Science Foundation of China[12090040]; National Natural Science Foundation of China[12090043]; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB350003]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001764435700001
出版者IOP Publishing Ltd
资助机构Strategic Priority Program of CAS[XDB1160302, XDB1160000, XDB1160200] ; International Centre of Supernovae, Yunnan Key Laboratory[202505AV340004] ; Youth Innovation Promotion Association of CAS[20200060] ; National K&D Program of China[2021YFA1600401, 2021YFA1600403, 2022YFA1603002, 2023YFA1607901] ; National Natural Science Foundation of China[12125303, 12288102, 12273056, 12090041, 11873066, 12090040, 12090043] ; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB350003]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/29234]  
专题云南天文台_大样本恒星演化研究组
通讯作者Zhang, Haotong; Chen XF(陈雪飞)
作者单位1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China; htzhang@bao.ac.cn;
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; cxf@ynao.ac.cn;
3.International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China;
4.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China;
5.Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany;
6.College of Photonics and Optical Engineering, Aerospace Information Technology University, Jinan 250299, People’s Republic of China
推荐引用方式
GB/T 7714		 Yang MK,Yuan, Hailong,Yang, Xiaozhen,et al. Discovery and Characterization of White Dwarf-FGK Main-sequence Binaries within the Optical Main-sequence Locus[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2026,284(2).
APA 杨明宽.,Yuan, Hailong.,Yang, Xiaozhen.,Bai, Zhongrui.,He, Yuji.,...&陈雪飞.(2026).Discovery and Characterization of White Dwarf-FGK Main-sequence Binaries within the Optical Main-sequence Locus.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,284(2).
MLA 杨明宽,et al."Discovery and Characterization of White Dwarf-FGK Main-sequence Binaries within the Optical Main-sequence Locus".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 284.2(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。