NAOC Open IR  > 光学天文研究部
Detection of small-amplitude oscillations in the G-giant HD 76294 (zeta hydrae)
Ando, Hiroyasu1,2,3; Tan, Kefeng4; Kambe, Eiji5; Sato, Bun'ei6; Zha, Gang
2008
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
Volume60Issue:2Pages:219-222
AbstractWe 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.
KeywordAsteroseismology Stars : g Giants Stars : Individual (Zeta Hydrae) Stars : Oscillation Stars : Statistics Techniques : Radial Velocities
Indexed BySCI
Language英语
WOS IDWOS:000255818400008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8338
Collection光学天文研究部
Affiliation1.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
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ando, Hiroyasu]'s Articles
[Tan, Kefeng]'s Articles
[Kambe, Eiji]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ando, Hiroyasu]'s Articles
[Tan, Kefeng]'s Articles
[Kambe, Eiji]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ando, Hiroyasu]'s Articles
[Tan, Kefeng]'s Articles
[Kambe, Eiji]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.