A Catalog of New Slowly Pulsating B-type Stars
文献类型:期刊论文
作者 | Shi XD(施相东)1,2,3,4; Qian SB(钱声帮)1,2,3,4; Zhu LY(朱俐颖)1,3,4; Li LJ(李临甲)1,3,4; Li LJ(李临甲); Qian SB(钱声帮); Shi XD(施相东); Zhu LY(朱俐颖) |
刊名 | The Astrophysical Journal Supplement Series |
出版日期 | 2023-08-24 |
卷号 | 268期号:1 |
ISSN号 | 0067-0049 |
DOI | 10.3847/1538-4365/ace88c |
产权排序 | 第1完成单位 |
英文摘要 | This paper reports the discovery of new slowly pulsating B-type stars. Based on the photometric, spectral, and astrometric data of the TESS, LAMOST, and Gaia surveys, we have found 286 new slowly pulsating B-type (SPB) stars and 21 candidates. Among these, 20 are Be stars or candidates with emission-line profiles. It is shown that these SPB stars have luminosities between 40 and 2850 L ⊙ and effective temperatures ranging from 10,000 to 21,000 K. Their pulsation periods are from 0.14 to 6.5 days with amplitude ranges of 0.2–20 mmag in the TESS band. It is indicated that these targets follow the distribution of the SPB stars in the period–luminosity and the period–temperature diagrams. Their positions on the H-R diagram reveal that most of these pulsators are distributed in the instability region of SPB stars, in the main-sequence evolutionary stage, and with mass ranges of 2.5–7 M ⊙. However, there are some targets beyond the red edge of the theoretical instability region, which should be caused by the rapid rotation reducing the measured effective temperature. The discovery of these new SPB stars increases the total number by over 60%, which are significant samples for further investigating the structure and evolution of intermediate-mass and even massive stars by asteroseismology. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
语种 | 英语 |
出版者 | The American Astronomical Society |
WOS记录号 | IOP:APJS_268_1_16 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26209] |
专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Shi XD(施相东); Zhu LY(朱俐颖) |
作者单位 | 1.University of Chinese Academy of Sciences, No. 1 Yanqihu East Road, Huairou District, Beijing 101408, People’s Republic of China 2.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People’s Republic of China 3.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, Kunming 650216, People’s Republic of China; sxd@ynao.ac.cn 4.Key Laboratory of the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, People’s Republic of China |
推荐引用方式 GB/T 7714 | Shi XD,Qian SB,Zhu LY,et al. A Catalog of New Slowly Pulsating B-type Stars[J]. The Astrophysical Journal Supplement Series,2023,268(1). |
APA | Shi XD.,Qian SB.,Zhu LY.,Li LJ.,李临甲.,...&朱俐颖.(2023).A Catalog of New Slowly Pulsating B-type Stars.The Astrophysical Journal Supplement Series,268(1). |
MLA | Shi XD,et al."A Catalog of New Slowly Pulsating B-type Stars".The Astrophysical Journal Supplement Series 268.1(2023). |
入库方式: OAI收割
来源:云南天文台
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