Non-radial oscillation modes with long lifetimes in giant stars

被引：0

作者：

Joris De Ridder

Caroline Barban

Frédéric Baudin

Fabien Carrier

Artie P. Hatzes

Saskia Hekker

Thomas Kallinger

Werner W. Weiss

Annie Baglin

Michel Auvergne

Réza Samadi

Pierre Barge

Magali Deleuil

机构：

[1] Instituut voor Sterrenkunde,

[2] K. U. Leuven,undefined

[3] Celestijnenlaan 200D,undefined

[4] B-3001 Leuven,undefined

[5] Belgium ,undefined

[6] LESIA,undefined

[7] UMR8109,undefined

[8] Université Pierre et Marie Curie,undefined

[9] Université Denis Diderot,undefined

[10] Observatoire de Paris,undefined

[11] 92195 Meudon,undefined

[12] France ,undefined

[13] Institut d’Astrophysique Spatiale,undefined

[14] UMR 8617 CNRS-Université Paris XI,undefined

[15] Campus d’Orsay,undefined

[16] Thüringer Landessternwarte,undefined

[17] Royal Observatory of Belgium,undefined

[18] Ringlaan 3,undefined

[19] 1180 Brussels,undefined

[20] Belgium ,undefined

[21] Institute for Astronomy,undefined

[22] University of Vienna,undefined

[23] Türkenschanzstrasse 17,undefined

[24] A-1180 Vienna,undefined

[25] Austria ,undefined

[26] Laboratoire d’Astrophysique de Marseille,undefined

[27] OAMP,undefined

[28] Université Aix-Marseille & CNRS,undefined

[29] 38 rue Frédéric Joliot Curie,undefined

[30] 13388 Marseille 13,undefined

[31] France ,undefined

来源：

Nature | 2009年 / 459卷

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摘要：

When main-sequence stars like the Sun near the end of their life, they expand to become oscillating red giants. Such evolved stars could in principle provide stringent tests of stellar theory via analysis of radial and non-radial stellar oscillations. Until now it has been unclear whether non-radial modes are observable at all in red giants. De Ridder et al. now report the presence of both radial and non-radial oscillations in over 300 giant stars. For some red giants, mode lifetimes are of the order of a month. Current stellar evolution theory cannot account for these observations.

引用

页码：398 / 400

页数：2

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