Observational Properties of β Cephei Stars: 88 New Samples Discovered Based on TESS and Gaia Data
文献类型：期刊论文
| 作者 | Shi XD(施相东)2,3; Qian, Sheng-bang1; Zhu LY(朱俐颖)2,3; Li LJ(李临甲)2,3; Zhao EG(赵二刚)2,3; Mkrtichian, David4; Khamrakulov, Farkhodjon5; Lin, Wen-xu1 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 281期号:1 |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/ae101e |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | We present a systematic investigation of beta Cephei (BCEP) stars by integrating photometric data from the Transiting Exoplanet Survey Satellite (TESS) with astrometric parameters from Gaia Data Release 3. Utilizing TESS's short-cadence (SC) and full-frame image (FFI) photometry, along with Gaia parallaxes and temperatures derived from the Extended Stellar Parametrizer for Hot Stars pipeline, we identify 88 new BCEP stars and candidates-85 from SC data and three from SPOC-processed FFI observations. These targets exhibit visual magnitudes ranging from 8.0 to 12.0 mag, parallaxes between 0.11 and 1.74 mas, effective temperatures of 18,000-30,000 K, and luminosities from 1500-38,000 L-circle dot, consistent with previously cataloged BCEP populations, thereby demonstrating the robustness of our classification criteria. Key findings include: (1) a significant detection disparity between SC and FFI datasets, with 30% of SC targets exceeding 18,000 K compared to only 0.7% in FFI, reflecting observational biases toward high-luminosity, hotter stars in SC data; (2) four samples near the red edge of the theoretical instability strip, exhibiting sparse pulsation modes that are important samples for testing pulsation models under low-mass, low-temperature conditions; and (3) spatial clustering within the Galactic disk (divided by b divided by < 20 degrees), with two high-latitude outliers likely representing runaway stars ejected from disk environments. Our analysis underscores the critical role of space-based photometry in detecting low-amplitude pulsators and the transformative potential of multisurvey integration in the era of time-domain astronomy. These results provide new samples to constrain stellar pulsation theories of massive stars and to study Galactic dynamics. |
| 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 | B-TYPE STARS ; CONVECTIVE BOUNDARIES ; MODULES ; PULSATORS ; BINARIES ; CATALOG ; ASTEROSEISMOLOGY ; ROTATION |
| 资助项目 | International Cooperation Projects of the National Key RD Program[2022YFE0116800]; International Partnerships Program of Chinese Academy of Sciences[020GJHZ2023030GC]; Chinese Natural Science Foundation[12273103]; Yunnan Revitalization Talent Support Program; Basic research project of Yunnan Province[202501AS070055]; Basic research project of Yunnan Province[202301AT070352]; Chinese Academy of Sciences President's International Fellowship Initiative[2025PVA0089]; NASA Explorer Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001607887700001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | International Cooperation Projects of the National Key RD Program[2022YFE0116800] ; International Partnerships Program of Chinese Academy of Sciences[020GJHZ2023030GC] ; Chinese Natural Science Foundation[12273103] ; Yunnan Revitalization Talent Support Program ; Basic research project of Yunnan Province[202501AS070055, 202301AT070352] ; Chinese Academy of Sciences President's International Fellowship Initiative[2025PVA0089] ; NASA Explorer Program |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28706]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 通讯作者 | Zhu LY(朱俐颖) |
| 作者单位 | 1.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People’s Republic of China; 2.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, Kunming 650216, People’s Republic of China; zhuly@ynao.ac.cn; 3.University of Chinese Academy of Sciences, No.1 Yanqihu East Rd., Huairou District, Beijing 101408, People’s Republic of China; 4.National Astronomical Research Institute of Thailand, 260 Moo 4, T. Donkaew, A. Maerim 50180, Chiangmai, Thailand; 5.Samarkand State University named after Sharof Rashidov, Engineering Physics Institute, Department of Nuclear Physics and Astronomy, University blv. 15, 140104 Samarkand, Uzbekistan |
| 推荐引用方式 GB/T 7714 | Shi XD,Qian, Sheng-bang,Zhu LY,et al. Observational Properties of β Cephei Stars: 88 New Samples Discovered Based on TESS and Gaia Data[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2025,281(1). |
| APA | 施相东.,Qian, Sheng-bang.,朱俐颖.,李临甲.,赵二刚.,...&Lin, Wen-xu.(2025).Observational Properties of β Cephei Stars: 88 New Samples Discovered Based on TESS and Gaia Data.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,281(1). |
| MLA | 施相东,et al."Observational Properties of β Cephei Stars: 88 New Samples Discovered Based on TESS and Gaia Data".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 281.1(2025). |
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来源：云南天文台
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