What does the Sun suggest about global oscillation amplitudes in solar‐like stars | Zendy

Severino G. | Zendy; Straus Th. | Zendy; Oliviero M. | Zendy; Steffen M. | Zendy

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What does the Sun suggest about global oscillation amplitudes in solar‐like stars

Author(s) -

Severino G.,

Straus Th.,

Oliviero M.,

Steffen M.

Publication year - 2010

Publication title -

astronomische nachrichten

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.394

H-Index - 63

eISSN - 1521-3994

pISSN - 0004-6337

DOI - 10.1002/asna.201011421

Subject(s) - physics , stars , amplitude , adiabatic process , astrophysics , oscillation (cell signaling) , scaling , luminosity , star (game theory) , astronomy , optics , thermodynamics , geometry , mathematics , galaxy , biology , genetics

Motivated by the results of CoRoT and based on the solar experience, we develop a new stellar scaling law for the intensity‐velocity amplitude ratio (gain) of resonant oscillations, which is a quantity independent of the excitation model. The comparison of our approach with observations gives new interesting results for the Sun as a star. Moreover, for a sample of three solar‐like stars observed by CoRoT, we found that our scaling law provides an explanation of the low observed luminosity amplitudes which is an alternative to non‐adiabatic effects (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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