| An18.9 min blue large-amplitude pulsator crossing the 'Hertzsprung gap' of hot subdwarfs | |
Lin, Jie1; Wu CY(吴程远)1,16 ; Wang, Xiaofeng1,2; Németh, Péter3,4; Xiong HR(熊赫然)16,17; Wu T(吴涛)5,6,7,8,16; Filippenko, Alexei V.9; Cai, Yongzhi1; Brink, Thomas G.9; Yan, Shengyu1; Zeng, Xiangyun10; Luo, Yangping11; Xiang, Danfeng1; Zhang JJ(张居甲)16; Zheng, WeiKang9; Yang, Yi9; Mo, Jun1; Xi, Gaobo1; Zhang, Jicheng12; Iskandar, Abdusamatjan13; Esamdin, Ali13; Jiang, Xiaojun7,14; Sai, Hanna1; Wei, Zixuan1; Chen, Liyang1; Guo, Fangzhou1; Chen, Zhihao1; Li, Wenxiong15; Lin, Weili1; Lin, Han1; Zhang, Xinghan1
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| 发表期刊 | NATURE ASTRONOMY
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| 2022-09-29 | |
| DOI | 10.1038/s41550-022-01783-z |
| 产权排序 | 第16完成单位 |
| 收录类别 | SCI |
| 摘要 | Blue large-amplitude pulsators (BLAPs) represent a new and rare class of hot pulsating stars with unusually large amplitudes and short periods. The evolutionary path that could give rise to such kinds of stellar configurations is unclear. Here we report a comprehensive study ofthe peculiar BLAP discovered by the Tsinghua University-Ma Huateng Telescopes for Survey (TMTS), namely, TMTSJ035143.63+584,504.2 (TMTS-BLAP-1). This new BLAP has an 18.9 min pulsation period and is similar to the BLAPs with a low surface gravity and extended helium-enriched envelope, suggesting that it is a low-gravity BLAP at the shortest-period end. In particular, the long-term monitoring data reveal that this pulsating star has an unusually large rate of period change, namely, (P) over dot/P = 2.2 x 10(-6) yr(-1). Such a significant and positive value challenges its origins from both helium-core pre-white-dwarfs and core helium-burning subdwarfs, but is consistent with that derived from shell helium-burning subdwarfs. The particular pulsation period and unusual rate of period change indicate that TMTS-BLAP-1 is at a short-lived (similar to 10(6) yr) phase of shell helium ignition before the stable shell helium burning; in other words, TMTS-BLAP-1 is going through a 'Hertzsprung gap' of hot subdwarfs. |
| 资助项目 | National Science Foundation of China (NSFC)[12033003] ; National Science Foundation of China (NSFC)[11633002] ; Ma Huateng Foundation ; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002] ; Tencent Xplorer Prize ; National Natural Science Foundation of China (NSFC)[12003013] ; Grant Agency of the Czech Republic[GACR 22-34467S] ; Polish National Science Centre[UMO-2017/26/E/ST9/00703] ; Polish National Science Centre[UMO-2017/25/B/ST9/02218] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; National Key R&D Program of China[2021YFA1600402] ; NSFC of China[11873084] ; NSFC of China[12133011] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents ; Miller Institute for Basic Research in Science ; Christopher R. Redlich Fund ; China Postdoctoral Science Foundation[2021M691821] ; W. M. Keck Foundation ; NASA[NN12AR55G] ; NASA[80NSSC18K0284] ; NASA[80NSSC18K1575] ; Kepler/K2 grant[J1944/80NSSC19K0112] ; Kepler/K2 grant[HST GO-15889] ; STFC[ST/T000198/1] ; STFC[ST/S006109/1] ; US National Science Foundation[AST-1440341] ; US National Science Foundation[AST-2034437] ; Caltech ; IPAC ; Weizmann Institute for Science ; Oskar Klein Center at Stockholm University ; University of Maryland ; University of Washington ; Deutsches Elektronen-Synchrotron and Humboldt University ; Los Alamos National Laboratories ; TANGO Consortium of Taiwan ; University of Wisconsin at Milwaukee ; Trinity College Dublin ; Lawrence Livermore National Laboratories ; Lawrence Berkeley National Laboratory ; IN2P3 (France) ; [RVO:67985815] |
| 项目资助者 | National Science Foundation of China (NSFC)[12033003, 11633002] ; Ma Huateng Foundation ; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002] ; Tencent Xplorer Prize ; National Natural Science Foundation of China (NSFC)[12003013] ; Grant Agency of the Czech Republic[GACR 22-34467S] ; Polish National Science Centre[UMO-2017/26/E/ST9/00703, UMO-2017/25/B/ST9/02218] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; National Key R&D Program of China[2021YFA1600402] ; NSFC of China[11873084, 12133011] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents ; Miller Institute for Basic Research in Science ; Christopher R. Redlich Fund ; China Postdoctoral Science Foundation[2021M691821] ; W. M. Keck Foundation ; NASA[NN12AR55G, 80NSSC18K0284, 80NSSC18K1575] ; Kepler/K2 grant[J1944/80NSSC19K0112, HST GO-15889] ; STFC[ST/T000198/1, ST/S006109/1] ; US National Science Foundation[AST-1440341, AST-2034437] ; Caltech ; IPAC ; Weizmann Institute for Science ; Oskar Klein Center at Stockholm University ; University of Maryland ; University of Washington ; Deutsches Elektronen-Synchrotron and Humboldt University ; Los Alamos National Laboratories ; TANGO Consortium of Taiwan ; University of Wisconsin at Milwaukee ; Trinity College Dublin ; Lawrence Livermore National Laboratories ; Lawrence Berkeley National Laboratory ; IN2P3 (France) ; [RVO:67985815] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
| 文章类型 | Article; Early Access |
| 出版者 | NATURE PORTFOLIO |
| 出版地 | HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY |
| ISSN | 2397-3366 |
| URL | 查看原文 |
| WOS记录号 | WOS:000863153200002 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | B-STARS ; EVOLUTIONARY STATUS ; DRIVING MECHANISM |
| 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/114a53/25590 |
| 专题 | 大样本恒星演化研究组 恒星物理研究组 南方基地 中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Wang, Xiaofeng |
| 作者单位 | 1.Physics Department and Tsinghua Center for Astrophysics, Tsinghua University, Beijing, People’s Republic of China; 2.Beijing Planetarium, Beijing Academy of Sciences and Technology, Beijing, People’s Republic of China; 3.Astronomical Institute of the Czech Academy of Sciences, Ondřejov, Czech Republic; 4.Astroserver.org, Malomsok, Hungary; 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, People’s Republic of China; 6.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, People’s Republic of China; 7.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, People’s Republic of China; 8.Institute of Theoretical Physics, Shanxi University, Taiyuan, People’s Republic of China; 9.Department of Astronomy, University of California, Berkeley, USA; 10.Center for Astronomy and Space Sciences, China Three Gorges University, Yichang, People’s Republic of China; 11.Department of Astronomy, China West Normal University, Nanchong, People’s Republic of China; 12.Department of Astronomy, Beijing Normal University, Beijing, People’s Republic of China; 13.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, People’s Republic of China; 14.National Astronomical Observatories of China, Chinese Academy of Sciences, Beijing, People’s Republic of China; 15.The School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel 16.Yunnan Observatories, Chinese Academy of Sciences, Kunming, People's Republic of China 17.Research School of Astronomy & Astrophysics, Australian National University, Canberra, Australia; |
| 推荐引用方式 GB/T 7714 | Lin, Jie,Wu CY,Wang, Xiaofeng,et al. An18.9 min blue large-amplitude pulsator crossing the 'Hertzsprung gap' of hot subdwarfs[J]. NATURE ASTRONOMY,2022. |
| APA | Lin, Jie.,Wu CY.,Wang, Xiaofeng.,Németh, Péter.,Xiong HR.,...&Zhang, Xinghan.(2022).An18.9 min blue large-amplitude pulsator crossing the 'Hertzsprung gap' of hot subdwarfs.NATURE ASTRONOMY. |
| MLA | Lin, Jie,et al."An18.9 min blue large-amplitude pulsator crossing the 'Hertzsprung gap' of hot subdwarfs".NATURE ASTRONOMY (2022). |
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