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Paper: Oscillations and Surface Rotation of Red Giant Stars
Volume: 479, Progress in Physics of the Sun and Stars
Page: 197
Authors: Hedges, C.; Mathur, S.; Thompson, M. J.; MacGregor, K. B.
Abstract: More than 15000 red giants observed by Kepler for a duration of almost one year became public at the beginning of this year. We analysed a subsample of 416 stars to determine the global properties of acoustic modes (mean large separation and frequency of maximum power). Using the effective temperature from the Kepler Input Catalog, we derived a first estimate of the masses and radii of these stars. Finally, we applied wavelets to look for a signature of surface rotation, which relies on the presence of spots or other surface features crossing the stellar visible disk.
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