NAOC Open IR  > 光学天文研究部
Non-adiabatic oscillations of red giants
Xiong, D. R.; Deng, L.
2007-07-11
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号378期号:4页码:1270-1282
摘要Using our non-local time-dependent theory of convection, the linear non-adiabatic oscillations of 10 evolutionary model series with masses of 1-3 M-circle dot are calculated. The results show that there is a red giant instability strip in the lower temperature side of the Hertzsprung-Russell diagram which goes along the sequences of the red giant branch and the asymptotic giant branch. For red giants of lower luminosities, pulsation instability is found at high order overtones; the lower order modes from the fundamental to the second overtone are stable. Towards higher luminosity and lower effective temperature, instability moves to lower order modes, and the amplitude growth rate of oscillations also grows. At the high luminosity end of the strip, the fundamental and the first overtone become unstable, while all the modes above the fourth order become stable. The excitation mechanisms have been studied in detail. It is found that turbulent pressure plays a key role for excitation of red variables. The frozen convection approximation is unavailable for the low temperature stars with extended convective envelopes. In any case, this approximation can explain neither the red edge of the Cepheid instability strip, nor the blue edge of the pulsating red giant instability strip. An analytic expression of a pulsation constant as a function of stellar mass, luminosity and effective temperature is presented from this work.
关键词Convection Stars : Evolution Stars : Late-type Stars : Variables : Other
DOI10.1111/j.1365-2966.2007.11642.x
收录类别SCI
语种英语
WOS记录号WOS:000247667900006
引用统计
被引频次:36[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8974
专题光学天文研究部
作者单位1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714
Xiong, D. R.,Deng, L.. Non-adiabatic oscillations of red giants[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2007,378(4):1270-1282.
APA Xiong, D. R.,&Deng, L..(2007).Non-adiabatic oscillations of red giants.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,378(4),1270-1282.
MLA Xiong, D. R.,et al."Non-adiabatic oscillations of red giants".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 378.4(2007):1270-1282.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xiong, D. R.]的文章
[Deng, L.]的文章
百度学术
百度学术中相似的文章
[Xiong, D. R.]的文章
[Deng, L.]的文章
必应学术
必应学术中相似的文章
[Xiong, D. R.]的文章
[Deng, L.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。