FIRST DETECTION OF MULTI-SHOCKS IN RR LYRAE STARS FROM ANTARCTICA: A POSSIBLE EXPLANATION OF THE BLAZHKO EFFECT
文献类型：期刊论文
| 作者 | Chadid, M.1; Vernin, J.1; Preston, G.2; Zalian, C.1; Pouzenc, C.1; Abe, L.1; Agabi, A.1; Aristidi, E.1; Liu, L. Y.3; Mekarnia, D.1 |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2014-11-01 |
| 卷号 | 148期号:5 |
| 关键词 | hydrodynamics methods: observational stars: atmospheres stars: oscillations stars: variables: general techniques: photometric |
| 英文摘要 | We present the first detection of multi-shocks propagating through the atmosphere of the Blazhko star S Arae using uninterrupted, accurate optical photometric data collected during one polar night, 150 days from Antarctica at Dome C, with the Photometer AntarctIca eXtinction (PAIX). We acquired 89,736 CCD frames during 323 pulsation cycles and 3 Blazhko cycles. We detected two new light curve properties in the PAIX light curve, jump and rump, which we associated with two new post-maximum shock waves Sh(PM1) and Sh(PM2). jump, lump, rump, bump, and hump are induced by five shock waves, with different amplitudes and origins, Sh(PM1), Sh(PM), Sh(PM2), Sh(PM3), and the main shock Sh(H+He). Correlations between the length of rise time and light amplitude and Sh(PM3) are monotonous during three Blazhko cycles, but the pulsation curve is double peaked. We discuss the physical mechanisms driving the modulation of these quantities. Finally, we hypothesize that the origin of the Blazhko effect is a dynamical interaction between a multi-shock structure and an outflowing wind in a coronal structure. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000344141200014 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6380]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | 1.Univ Nice Sophia Antipolis, Observ Cote Azur, UMR 7293, F-06108 Nice 02, France 2.Carnegie Observ, Pasadena, CA 91101 USA 3.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China 4.DGA Matrise Informat, F-35998 Rennes Armees, France |
| 推荐引用方式 GB/T 7714 | Chadid, M.,Vernin, J.,Preston, G.,et al. FIRST DETECTION OF MULTI-SHOCKS IN RR LYRAE STARS FROM ANTARCTICA: A POSSIBLE EXPLANATION OF THE BLAZHKO EFFECT[J]. ASTRONOMICAL JOURNAL,2014,148(5). |
| APA | Chadid, M..,Vernin, J..,Preston, G..,Zalian, C..,Pouzenc, C..,...&Trinquet, H..(2014).FIRST DETECTION OF MULTI-SHOCKS IN RR LYRAE STARS FROM ANTARCTICA: A POSSIBLE EXPLANATION OF THE BLAZHKO EFFECT.ASTRONOMICAL JOURNAL,148(5). |
| MLA | Chadid, M.,et al."FIRST DETECTION OF MULTI-SHOCKS IN RR LYRAE STARS FROM ANTARCTICA: A POSSIBLE EXPLANATION OF THE BLAZHKO EFFECT".ASTRONOMICAL JOURNAL 148.5(2014). |
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来源：国家天文台
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