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Irregular changes in H alpha emission line of V423 Aur observed by LAMOST Medium-Resolution Spectrographs

文献类型：期刊论文

作者Wu, Chao-Jian1; Wu, Hong1; Hsia, Chih-Hao2; Zhang, Wei1; Ren, Juan-Juan3; Li, Guang-Wei1; Chen, Jian-Jun1; Yang, Fan1; Shi, Jian-Rong1; Hou, Yong-Hui4,5
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2020-03-01
卷号20期号:3页码:8
关键词stars: emission-line, Be stars: variables: general stars: rotation
ISSN号1674-4527
DOI10.1088/1674-4527/20/3/33
英文摘要We obtained seven spectra of the Be star V423 Aur on 2017 Dec. 5 using the LAMOST Medium-Resolution Spectrograph with exposures from 600 to 1200 seconds. These spectra show the irregular H alpha emission line profile variations (LPVs). In the seven spectra, from the 4th to 7th, the left part of H alpha profile even shows excess. However, no variation can be seen from the follow-up observation of photometry by 1.26-m telescope and High-Resolution spectra by 2.16-m telescope. According to the High-Resolution spectra, we conclude that it is a B7V type star with E(B - V) = 0.709 +/- 0.036 and its vsini is similar to 221.8 km s(-1). The short-term H alpha LPVs could be explained as a result of the transient ejection of matter from rotating disk or shell around V423 Aur.
WOS关键词INTENSIVE PHOTOMETRY ; B-STARS ; VARIABLES ; SOUTHERN ; PERIOD
资助项目National Key R&D Program of China[2017YFA0402704] ; National Natural Science Foundation of China[11733006] ; National Natural Science Foundation of China[11403061] ; National Natural Science Foundation of China[11903048] ; National Natural Science Foundation of China[U1631131] ; National Natural Science Foundation of China[11973060] ; National Natural Science Foundation of China[U1531118] ; National Natural Science Foundation of China[11403037] ; National Natural Science Foundation of China[11225316] ; National Natural Science Foundation of China[11173030] ; National Natural Science Foundation of China[11303038] ; National Natural Science Foundation of China[Y613991N01] ; National Natural Science Foundation of China[U1531245] ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-SLH007] ; Science and Technology Development Fund, Macau SAR[119/2017/A3] ; Science and Technology Development Fund, Macau SAR[061/2017/A2] ; Science and Technology Development Fund, Macau SAR[0007/2019/A] ; Macau University of Science and Technology[FRG-19-004-SSI] ; National Development and Reform Commission ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000525679000001
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Macau University of Science and Technology ; Macau University of Science and Technology ; National Development and Reform Commission ; National Development and Reform Commission ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Macau University of Science and Technology ; Macau University of Science and Technology ; National Development and Reform Commission ; National Development and Reform Commission ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Macau University of Science and Technology ; Macau University of Science and Technology ; National Development and Reform Commission ; National Development and Reform Commission ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Key Research Program of Frontier Sciences, CAS ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Macau University of Science and Technology ; Macau University of Science and Technology ; National Development and Reform Commission ; National Development and Reform Commission ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
源URL[http://ir.bao.ac.cn/handle/114a11/55908]  
专题中国科学院国家天文台
通讯作者Wu, Chao-Jian
作者单位1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China
2.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Taipa, Macao, Peoples R China
3.Chinese Acad Sci, Key Lab Space Astron & Technol, Natl Astron Observ, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Peoples R China
5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Chao-Jian,Wu, Hong,Hsia, Chih-Hao,et al. Irregular changes in H alpha emission line of V423 Aur observed by LAMOST Medium-Resolution Spectrographs[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(3):8.
APA Wu, Chao-Jian.,Wu, Hong.,Hsia, Chih-Hao.,Zhang, Wei.,Ren, Juan-Juan.,...&Liu, Ji-Feng.(2020).Irregular changes in H alpha emission line of V423 Aur observed by LAMOST Medium-Resolution Spectrographs.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(3),8.
MLA Wu, Chao-Jian,et al."Irregular changes in H alpha emission line of V423 Aur observed by LAMOST Medium-Resolution Spectrographs".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.3(2020):8.

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