Non-Radial Oscillations in Red Giants
نویسندگان
چکیده
منابع مشابه
Non - adiabatic Oscillations of Red Giants
Using our non-local time-dependent theory of convection, the linear non-adiabatic oscillations of 10 evolutionary model series with masses of 1–3M⊙ are calculated. The results show that there is a red giant instability strip in the lower temperature side of the Hertzsprung-Russel (HR) diagram which goes along the sequences of the red giant branch (RGB) and the asymptotic giant branch (AGB). For...
متن کاملTheoretical amplitudes and lifetimes of non-radial solar-like oscillations in red giants
Context. Solar-like oscillations have been observed in numerous red giants from ground and from space. An important question arises: could we expect to detect non-radial modes probing the internal structure of these stars? Aims. We investigate under what physical circumstances non-radial modes could be observable in red giants; what would be their amplitudes, lifetimes and heights in the power ...
متن کاملSpecial feature Theoretical amplitudes and lifetimes of non-radial solar-like oscillations in red giants
Context. Solar-like oscillations have been observed in numerous red giants from ground and from space. An important question arises: could we expect to detect non-radial modes probing the internal structure of these stars? Aims. We investigate under what physical circumstances non-radial modes could be observable in red giants; what would be their amplitudes, lifetimes and heights in the power ...
متن کاملOscillations of αUMa and other red giants
There is growing observational evidence that the variability of red giants could be caused by self-excitation of global modes of oscillation. The most recent evidence of such oscillations was reported for αUMa by Buzasi et al. (2000) who analysed space photometric data from the WIRE satellite. Little is understood about the oscillation properties in red giants. In this paper we address the ques...
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Context. Observations during the first long run (∼150 days) in the exo-planet field of CoRoT increase the number of G-K giant stars for which solar-like oscillations are observed by a factor of 100. This opens the possibility to study the characteristics of their oscillations in a statistical sense. Aims. We aim to understand the statistical distribution of the frequencies of maximum oscillatio...
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ژورنال
عنوان ژورنال: Highlights of Astronomy
سال: 1980
ISSN: 1539-2996
DOI: 10.1017/s1539299600004354