| Observational Properties of 155 β Cephei Pulsating Variable Stars | |
Shi XD(施相东)1,2,3,4 ; Qian, Sheng-bang2,3,4; Zhu LY(朱俐颖)1,3,4; Li LJ(李临甲)1,3,4; Zhao EG(赵二刚)1,3,4; Lin WX(林文徐)1,3,4
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| 发表期刊 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
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| 2024-03-01 | |
| 卷号 | 271期号:1 |
| DOI | 10.3847/1538-4365/ad1f66 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 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. |
| 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 |
| 项目资助者 | 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 |
| 语种 | 英语 |
| 学科领域 | 天文学 |
| 文章类型 | Article |
| 出版者 | IOP Publishing Ltd |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| ISSN | 0067-0049 |
| URL | 查看原文 |
| WOS记录号 | WOS:001178883700001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | B-TYPE STARS ; BOLOMETRIC CORRECTIONS ; CONVECTIVE BOUNDARIES ; MODULES ; CATALOG ; ASTEROSEISMOLOGY ; ROTATION ; BINARIES ; SPECTRA |
| 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/114a53/26483 |
| 专题 | 双星与变星研究组 中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, Kunming 650216, People's Republic of China; [email protected]; 2.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China; 3.University of Chinese Academy of Sciences, No. 1 Yanqihu East Rd., Huairou District, Beijing 101408, People's Republic of China; 4.Key Laboratory of the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, 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 | 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). |
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