Observational Properties of 155 β Cephei Pulsating Variable Stars

doi:10.3847/1538-4365/ad1f66

	Observational Properties of 155 β Cephei Pulsating Variable Stars
	Shi XD(施相东)1,2,3,4; Qian, Sheng-bang 1,2,3; Zhu LY(朱俐颖)1,2,4; Li LJ(李临甲)1,2,4; Zhao EG(赵二刚)1,2,4; Lin WX(林文徐)1,2,4
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2024-03-01
卷号	271 期号:1
ISSN号	0067-0049
DOI	10.3847/1538-4365/ad1f66
产权排序	第1完成单位
文献子类	Article
英文摘要	beta Cephei pulsating variable (BCEP) stars are the most massive pulsating variable stars in the main sequence, exhibiting both p- and g-mode pulsations. In this study, we identified 155 BCEP stars or candidates using data from TESS and Gaia, of which 83 were first confirmed as BCEP stars. They have visual magnitudes ranging from 8 to 12 mag and effective temperatures between approximately 20,000 and 30,000 K, while the parallaxes of most targets are between 0.2 and 0.6 mas. The study indicates that these BCEP stars have pulsation periods ranging from 0.06 to 0.31 days, with amplitudes ranging from 0.1 to 55.8 mmag in the TESS band. Additionally, the number of BCEP stars increases as the pulsation amplitude decreases. These targets align with the distribution region of BCEP stars in the luminosity-period (L-P) and temperature-period diagrams. We have updated the L-P relation of BCEP stars. The Hertzsprung-Russell diagram indicates that these targets are in the main-sequence evolutionary phase, with masses ranging from 7 to 20 M-circle star and luminosities between 2800 and 71,000 L (circle star). They are almost in the theoretical instability region of BCEP stars but as previously reported, this region at the low-mass end (red) is not filled. The distribution of the pulsation constant indicates that the dominant pulsation periods of BCEP stars consist mainly of low-order p-mode pulsations with a high proportion of radial fundamental modes. These BCEP stars are excellent objects for enhancing our understanding of the structure and evolution of massive stars through asteroseismology.
学科主题	天文学
URL标识	查看原文
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
资助项目	International Cooperation Projects of the National Key RD Program[2022YFE0127300]; Chinese Natural Science Foundation[11933008]; Chinese Natural Science Foundation[12103084]; Chinese Natural Science Foundation[12273103]; Yunnan Revitalization Talent Support Program; Basic research project of Yunnan Province[202301AT070352]; NASA Office of Space Science; NASA Explorer Program
WOS关键词	B-TYPE STARS ; BOLOMETRIC CORRECTIONS ; CONVECTIVE BOUNDARIES ; MODULES ; CATALOG ; ASTEROSEISMOLOGY ; ROTATION ; BINARIES ; SPECTRA
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:001178883700001
资助机构	International Cooperation Projects of the National Key RD Program[2022YFE0127300] ; Chinese Natural Science Foundation[11933008, 12103084, 12273103] ; Yunnan Revitalization Talent Support Program ; Basic research project of Yunnan Province[202301AT070352] ; NASA Office of Space Science ; NASA Explorer Program
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/26483]
专题	云南天文台_双星与变星研究组
作者单位	1.Key Laboratory of the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, People's Republic of China 2.University of Chinese Academy of Sciences, No. 1 Yanqihu East Rd., Huairou District, Beijing 101408, People's Republic of China; 3.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China; 4.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, Kunming 650216, People's Republic of China; sxd@ynao.ac.cn;
推荐引用方式 GB/T 7714	Shi XD,Qian, Sheng-bang,Zhu LY,et al. Observational Properties of 155 β Cephei Pulsating Variable Stars[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2024,271(1).
APA	施相东,Qian, Sheng-bang,朱俐颖,李临甲,赵二刚,&林文徐.(2024).Observational Properties of 155 β Cephei Pulsating Variable Stars.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,271(1).
MLA	施相东,et al."Observational Properties of 155 β Cephei Pulsating Variable Stars".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 271.1(2024).