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The pulsational stability of intermediate- and low-luminosity red giants in globular clusters
Xiong Darun1; Deng Licai2
2006
Source PublicationChinese Astronomy and Astrophysics
ISSN0275-1062
Volume30Issue:4Pages:379
AbstractSome theoretical calculations of linear non-adiabatic pulsations of intermediate- and low- luminosity red giants in globular clusters have been carried out using a time-dependent theory of nonlocal stellar convection. As shown by the results, for all models with temperatures higher than 5400 K the modes up to the fourth overtone are pulsationally stable. With the increase of stellar luminosity, the low-order overtones also become pulsationally unstable. For red giants of intermediate and low luminosities, the pulsational stability is exceedingly low and is close to neutral stability. Therefore, they will be either non-variables or short-period variables ( P < 2 days) with extremely small amplitudes.
Language英语
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/30111
Collection中国科学院紫金山天文台
Affiliation1.中国科学院紫金山天文台
2.中国科学院国家天文台
First Author Affilication中国科学院紫金山天文台
Recommended Citation
GB/T 7714
Xiong Darun,Deng Licai. The pulsational stability of intermediate- and low-luminosity red giants in globular clusters[J]. Chinese Astronomy and Astrophysics,2006,30(4):379.
APA Xiong Darun,&Deng Licai.(2006).The pulsational stability of intermediate- and low-luminosity red giants in globular clusters.Chinese Astronomy and Astrophysics,30(4),379.
MLA Xiong Darun,et al."The pulsational stability of intermediate- and low-luminosity red giants in globular clusters".Chinese Astronomy and Astrophysics 30.4(2006):379.
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