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题名: DISCOVERY OF MULTIPLE PULSATIONS IN THE NEW delta SCUTI STAR HD 92277: ASTEROSEISMOLOGY FROM DOME A, ANTARCTICA
作者: Zong, Weikai1, 2, 3; Fu, Jian-Ning1, 4; Niu, Jia-Shu1; Charpinet, S.2, 3; Vauclair, G.2, 3; Ashley, Michael C. B.5; Cui, Xiangqun6; Feng LongLong(冯珑珑)7; Gong, Xuefei6; Lawrence, Jon S.5, 8; Luong-Van, Daniel5; Liu, Qiang9; Pennypacker, Carl R.10; Wang, Lingzhi9; Wang LiFan(王力帆)7, 11; Yuan, Xiangyan7, 12; York, Donald G.13, 14; Zhou, Xu9; Zhu ZhenXi(朱镇熹)7; Zhu, Zonghong1
刊名: ASTRONOMICAL JOURNAL
出版日期: 2015-02-01
卷号: 149, 期号:2, 页码:84
关键词: stars: individual (HD 92277) ; stars: variables: delta Scuti ; techniques: photometric
学科分类: 天文和天体物理
DOI: 10.1088/0004-6256/149/2/84
文章类型: Article
英文摘要: We report the discovery of low-amplitude oscillations in the star HD 92277 from long, continuous observations in the r and g bands using the CSTAR telescopes in Antarctica. A total of more than 1950 hours of high-quality light curves were used to categorize HD 92277 as a new member of the delta Scuti class. We have detected 21 (20 frequencies are independent and one is the linear combination) and 14 (13 frequencies are independent and one is the linear combination) pulsation frequencies in the r and g bands, respectively, indicating a multi-periodic pulsation behavior. The primary frequency f(1) = 10.810 days(-1) corresponds to a period of 0.0925 days and is an l = 1 mode. We estimate a B - V index of 0.39 and derive an effective temperature of 6800 K for HD 92277. We conclude that long, continuous and uninterrupted time-series photometry can be performed from Dome A, Antarctica, and that this is especially valuable for asteroseismology where multi-color observations (often not available from space-based telescopes) assist with mode identification.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: VARIABLE-STARS ; SKY SURVEY ; PHOTOMETRY ; TELESCOPE ; CATALOG ; CSTAR ; REDUCTION ; NETWORK ; KEPLER ; SITE
收录类别: SCI
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000349360200049
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14894
Appears in Collections:南极天文中心_期刊论文

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作者单位: 1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Univ Toulouse, UPS OMP, IRAP, F-31400 Toulouse, France
3.CNRS, IRAP, F-31400 Toulouse, France
4.Chinese Acad Sci, Visiting Astronomer Xinjiang Astron Observ, Urumqi 830011, Peoples R China
5.Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia
6.Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China
7.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
8.Australian Astron Observ, Epping, NSW 1710, Australia
9.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
10.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Astrophys, Berkeley, CA 94720 USA
11.Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA
12.Chinese Ctr Antarct Astron, Nanjing 210008, Jiangsu, Peoples R China
13.Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA
14.Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
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