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.
@article{arxiv.1103.0141,
title = {Characterisation of red-giant stars in the public Kepler data},
author = {S. Hekker and R. L. Gilliland and Y. Elsworth and W. J. Chaplin and J. De Ridder and D. Stello and T. Kallinger and K. A. Ibrahim and T. C. Klaus and J. Li},
journal= {arXiv preprint arXiv:1103.0141},
year = {2015}
}
Comments
Accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal