Discovery of the 'missing' mode in HR 1217 by the Whole Earth Telescope
文献类型：期刊论文
| 作者 | Kurtz, DW; Kawaler, SD; Riddle, RL; Reed, MD; Cunha, MS; Wood, M; Silvestri, N; Watson, TK; Dolez, N; Moskalik, P |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2002-03-01 |
| 卷号 | 330期号:3页码:L57-L61 |
| 关键词 | stars : individual : HR 1217 stars : magnetic fields stars : oscillations stars : variables : other |
| 英文摘要 | HR 1217 is a prototypical rapidly oscillating Ap star that has presented a test to the theory of non-radial stellar pulsation. Prior observations showed a clear pattern of five modes with alternating frequency spacings of 33.3 and 34.6 muHz, with a sixth mode at a problematic spacing of 50.0 muHz (which equals 1.5 X 33.3 muHz) to the high-frequency side. Asymptotic pulsation theory allowed for a frequency spacing of 34 muHz, but Hipparcos observations rule out such a spacing. Theoretical calculations of magnetoacoustic modes in Ap stars by Cunha predicted that there should be a previously undetected mode 34 muHz higher than the main group, with a smaller spacing between it and the highest one. In this Letter. we present preliminary results from a multisite photometric campaign on the rapidly oscillating Ap star HR 1217 using the 'Whole Earth Telescope'. While a complete analysis of the data will appear in a later paper, one outstanding result from this run is the discovery of a newly detected frequency in the pulsation spectrum of this star. at the frequency predicted by Cunha. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000174365200002 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8628]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Univ Cent Lancashire, Ctr Astrophys, Preston PR1 2HE, Lancs, England 2.Univ Cape Town, Dept Astron, ZA-7701 Rondebosch, South Africa 3.Observ Midi Pyrenees, CNRS, UMR 5572, F-31400 Toulouse, France 4.Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA 5.Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal 6.Inst Super Maia, P-4475690 Avisoso S Pedro, Castelo da Maia, Portugal 7.Florida Inst Technol, Dept Phys & Space Sci, Melbourne, FL 32901 USA 8.Florida Inst Technol, SARA Observ, Melbourne, FL 32901 USA 9.Southwestern Univ, Informat Technol Serv, Georgetown, TX 78626 USA 10.Nicholaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland |
| 推荐引用方式 GB/T 7714 | Kurtz, DW,Kawaler, SD,Riddle, RL,et al. Discovery of the 'missing' mode in HR 1217 by the Whole Earth Telescope[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2002,330(3):L57-L61. |
| APA | Kurtz, DW.,Kawaler, SD.,Riddle, RL.,Reed, MD.,Cunha, MS.,...&WET collaboration.(2002).Discovery of the 'missing' mode in HR 1217 by the Whole Earth Telescope.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,330(3),L57-L61. |
| MLA | Kurtz, DW,et al."Discovery of the 'missing' mode in HR 1217 by the Whole Earth Telescope".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 330.3(2002):L57-L61. |
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来源：国家天文台
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