Detection of small-amplitude oscillations in the G-giant HD 76294 (zeta hydrae)
文献类型：期刊论文
| 作者 | Ando, Hiroyasu1,2,3; Tan, Kefeng4 ; Kambe, Eiji5; Sato, Bun'ei6; Zha, Gang
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2008 |
| 卷号 | 60期号:2页码:219-222 |
| 关键词 | asteroseismology stars : G giants stars : individual (zeta Hydrae) stars : oscillation stars : statistics techniques : radial velocities |
| 英文摘要 | We made a precise radial-velocity measurement of the G-giant zeta Hya with an iodine cell technique, and found small-amplitude oscillations. The time scale of the oscillations was 6-10 hours, in which a wavy motion was clearly seen. Their power spectrum shows a maximum peak frequency of 38.3 mu Hz. A further period analysis with a pre-whitening procedure reveals that the four peaks, including 38.3 mu Hz, are significant. The peak frequency of the power envelope of the oscillations is about 35 mu Hz, which is quite low compared with a value (about 60 mu Hz) predicted by the scaling law. We also point out that the power excess is confined to a very narrow bandwidth (40 mu Hz) compared with previously observed G giants, zeta Hya and epsilon Oph. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000255818400008 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8338]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Natl Inst Nat Sci, Natl Astron Observ Japan, Tokyo 1818588, Japan 2.Grad Univ Adv Studies, Dept Astron, Kanagawa 2400193, Japan 3.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Natl Inst Nat Sci, Natl Astron Observ Japan, Okayama Astrophys Observ, Kamogatacho, Okayama 7190232, Japan 6.Tokyo Inst Technol, Meguro Ku, Tokyo 1528550, Japan |
| 推荐引用方式 GB/T 7714 | Ando, Hiroyasu,Tan, Kefeng,Kambe, Eiji,et al. Detection of small-amplitude oscillations in the G-giant HD 76294 (zeta hydrae)[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2008,60(2):219-222. |
| APA | Ando, Hiroyasu,Tan, Kefeng,Kambe, Eiji,Sato, Bun'ei,&Zha, Gang.(2008).Detection of small-amplitude oscillations in the G-giant HD 76294 (zeta hydrae).PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,60(2),219-222. |
| MLA | Ando, Hiroyasu,et al."Detection of small-amplitude oscillations in the G-giant HD 76294 (zeta hydrae)".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 60.2(2008):219-222. |
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来源：国家天文台
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