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arXiv · 1103.0141

Characterisation of red-giant stars in the public Kepler data

S. Hekker·R. L. Gilliland·Y. Elsworth·W. J. Chaplin·J. De Ridder·D. Stello·T. Kallinger·K. A. Ibrahim·T. C. Klaus·J. Li
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Abstract

The first public release of long-cadence stellar photometric data collected by the NASA Kepler mission has now been made available. In this paper we characterise the red-giant (G-K) stars in this large sample in terms of their solar-like oscillations. We use published methods and well-known scaling relations in the analysis. Just over 70% of the red giants in the sample show detectable solar-like oscillations, and from these oscillations we are able to estimate the fundamental properties of the stars. This asteroseismic analysis reveals different populations: low-luminosity H-shell burning red-giant branch stars, cool high-luminosity red giants on the red-giant branch and He-core burning clump and secondary-clump giants.

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S. Hekker, R. L. Gilliland, Y. Elsworth, W. J. Chaplin, J. De Ridder, D. Stello, T. Kallinger, K. A. Ibrahim, T. C. Klaus, J. Li. 2011-03-01. Characterisation of red-giant stars in the public Kepler data. https://doi.org/10.1111/j.1365-2966.2011.18574.x

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