Radiation damping in acoustically heated atmospheres of late-type stars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Acoustic Attenuation, Atmospheric Heating, Chromosphere, Elastic Damping, Late Stars, Giant Stars, Line Spectra, Photosphere, Stellar Rotation, Supergiant Stars

Scientific paper

It is shown that radiation damping of acoustic waves propagating through
a stellar photosphere is much larger in giant stars than in dwarfs. This
could remove a major argument against acoustic waves as possible heating
mechanism for the chromospheres of slowly rotating stars.

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