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DISCOVERY OF MULTIPLE PULSATIONS IN THE NEW delta SCUTI STAR HD 92277: ASTEROSEISMOLOGY FROM DOME A, ANTARCTICA
Zong, W. K.1,2,3; Fu, J. N.1,4; Niu, J. S.1; Charpinet, S.2,3; Vauclair, G.2,3; Ashley, M. C. B.5; Cui, X. Q.6; Feng, L. L.7; Gong, X. F.6; Lawrence, J. S.5,8; Luong-Van, D.5; Liu, Q.9; Pennypacker, C. R.10; Wang, L. Z.9; Wang, L. F.7,11; Yuan, X. Y.7,12; York, D. G.13; Zhou, X.9; Zhu, Z. X.7; Zhu, Z. H.1
2015-02-01
Source PublicationAstronomical Journal
ISSN0004-6256
Volume149Issue:2Pages:1184
Contribution Rank4
AbstractWe 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.
Correspondent Emailjnfu@bnu.edu.cn
Keywordstars: individual (HD 92277) stars: variables: delta Scuti techniques: photometric VARIABLE-STARS SKY SURVEY PHOTOMETRY TELESCOPE CATALOG CSTAR REDUCTION NETWORK KEPLER SITE Astronomy & Astrophysics
SubtypeArticle
DOI10.1088/0004-6256/149/2/84
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000349360200049
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/3235
Collection其它
Affiliation1.Department of Astronomy, Beijing Normal University, Beijing 100875, China;
2.Université de Toulouse, UPS-OMP, IRAP, F-31400 Toulouse, France; jnfu@bnu.edu.cn;
3.CNRS, IRAP, 14 Av. E. Belin, F-31400 Toulouse, France;
4.Visiting Astronomer at Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China;
5.School of Physics, University of New South Wales, Sydney, NSW 2052, Australia;
6.Nanjing Institute of Astronomical Optics and Technology, Nanjing 210042, China;
7.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China;
8.Australian Astronomical Observatory, Epping, NSW 1710, Australia;
9.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;
10.Center for Astrophysics, Lawrence Berkeley National Laboratory, Berkeley, CA, USA;
11.Department of Physics & Astronomy, Texas A&M University, College Station, TX 77843, USA;
12.Chinese Center for Antarctic Astronomy, Nanjing 210008, China;
13.Department of Astronomy and Astrophysics and Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA
Recommended Citation
GB/T 7714
Zong, W. K.,Fu, J. N.,Niu, J. S.,et al. DISCOVERY OF MULTIPLE PULSATIONS IN THE NEW delta SCUTI STAR HD 92277: ASTEROSEISMOLOGY FROM DOME A, ANTARCTICA[J]. Astronomical Journal,2015,149(2):1184.
APA Zong, W. K..,Fu, J. N..,Niu, J. S..,Charpinet, S..,Vauclair, G..,...&Zhu, Z. H..(2015).DISCOVERY OF MULTIPLE PULSATIONS IN THE NEW delta SCUTI STAR HD 92277: ASTEROSEISMOLOGY FROM DOME A, ANTARCTICA.Astronomical Journal,149(2),1184.
MLA Zong, W. K.,et al."DISCOVERY OF MULTIPLE PULSATIONS IN THE NEW delta SCUTI STAR HD 92277: ASTEROSEISMOLOGY FROM DOME A, ANTARCTICA".Astronomical Journal 149.2(2015):1184.
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