Discoveries and Properties of EL CVn-type Binaries in the TESS Survey

doi:10.3847/1538-4357/ad9b9c

YNAO OpenIR > 大样本恒星演化研究组

	Discoveries and Properties of EL CVn-type Binaries in the TESS Survey
	Xiong JP(熊建萍)1,2,3 ; Li ZW(李振威)1,2,3 ; Li J(李蛟)1,2,3 ; Zhang, Xiaobin 4,5,6; Chen, Xiaodian 4,5,6; Ji KF(季凯帆)1 ; Han ZW(韩占文)1,2,3 ; Chen XF(陈雪飞)1,2,3
发表期刊	ASTROPHYSICAL JOURNAL
	2025-02-01
卷号	979 期号:2
DOI	10.3847/1538-4357/ad9b9c
产权排序	第1完成单位
收录类别	SCI
摘要	EL CVn-type systems represent a rare evolutionary stage in binary star evolution, providing ideal laboratories for investigating stable mass-transfer processes and the formation of extremely low-mass white dwarfs (ELM WDs). The Transiting Exoplanet Survey Satellite (TESS) has delivered an extensive collection of high-precision time-domain photometric data, which is invaluable for studying EL CVn binaries. In this study, we identified 29 EL CVn systems from the TESS eclipsing binary catalogs (sectors 1-65), 11 of which are newly discovered. These systems consist of smaller, hotter prehelium WDs and A/F main-sequence stars. The orbital periods of these binaries range from 0.64 to 2.5 days. Utilizing TESS light curves, Gaia distances, and multiband photometric data (e.g., Galaxy Evolution Explorer, Two Micron All Sky Survey, Wide-field Infrared Survey Explorer, SkyMapper), we modeled the light curves and spectral energy distributions to derive system parameters, including effective temperatures, masses, and radii. These systems were then compared with the WD mass-period relation and the evolutionary tracks of ELM WDs. The comparison reveals that these binaries are consistent with the expected mass-period relation for WDs and align well with the evolutionary tracks on the Teff - logg diagram for ELM WDs. This result suggests that these EL CVn systems likely formed through stable mass-transfer processes. We provide a catalog of complete parameters for 29 EL CVn systems identified from the TESS survey. This catalog will serve as an essential resource for studying binary mass transfer, WD formation, and pulsation phenomena in EL CVn-type systems.
资助项目	MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12288102]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12125303]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12090040/3]; National Natural Science Foundation of China (NSFC)[2021YFA1600401/2021YFA1600403]; National Key R&D Program of China[12303106]; National Key R&D Program of China[12473034]; National Key R&D Program of China[12103086]; National Key R&D Program of China[12373037]; NFSC[GZC20232976]; Postdoctoral Fellowship Program of CPSF[202401AT070139]; Postdoctoral Fellowship Program of CPSF[202101AU070276]; Yunnan Fundamental Research Projects[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory[202305AB350003]; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[CMS-CSST-2021-A10]; China Manned Space Project; NASA's Science Mission Directorate; Gaia Data Processing and Analysis Consortium
项目资助者	MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12288102, 12125303, 12090040/3] ; National Natural Science Foundation of China (NSFC)[2021YFA1600401/2021YFA1600403] ; National Key R&D Program of China[12303106, 12473034, 12103086, 12373037] ; NFSC[GZC20232976] ; Postdoctoral Fellowship Program of CPSF[202401AT070139, 202101AU070276] ; Yunnan Fundamental Research Projects[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory[202305AB350003] ; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[CMS-CSST-2021-A10] ; China Manned Space Project ; NASA's Science Mission Directorate ; Gaia Data Processing and Analysis Consortium
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:001401274600001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	DIGITAL SKY SURVEY ; MASS WHITE-DWARFS ; ECLIPSING BINARIES ; DATA RELEASE ; MESA ISOCHRONES ; LIGHT CURVES ; KEPLER ; GAIA ; I. ; MODULES
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/28062
专题	大样本恒星演化研究组中国科学院天体结构与演化重点实验室天文技术实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, 396 YangFangWang, Guandu District, Kunming 650216, People's Republic of China; [email protected], [email protected]; 2.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China; 3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China; 4.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; 5.School of Astronomy and Space Science, University of the Chinese Academy of Sciences, Beijing 101408, People's Republic of China; 6.Department of Astronomy, China West Normal University, Nanchong, People's Republic of China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Xiong JP,Li ZW,Li J,et al. Discoveries and Properties of EL CVn-type Binaries in the TESS Survey[J]. ASTROPHYSICAL JOURNAL,2025,979(2).
APA	熊建萍.,李振威.,李蛟.,Zhang, Xiaobin.,Chen, Xiaodian.,...&陈雪飞.(2025).Discoveries and Properties of EL CVn-type Binaries in the TESS Survey.ASTROPHYSICAL JOURNAL,979(2).
MLA	熊建萍,et al."Discoveries and Properties of EL CVn-type Binaries in the TESS Survey".ASTROPHYSICAL JOURNAL 979.2(2025).

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