Seismic analysis of two solar-type stars observed by Kepler

S. Mathur

Seismic analysis of two solar-type stars observed by Kepler

Solar and Stellar Astrophysics 2011-10-06 v1

Authors: S. Mathur

Abstract

After more than one year of operation, the Kepler photometer has already provided exquisite data of solar-type stars. During the survey phase, 42 stars have been continuously observed. It appeared that five stars show evidence of oscillations, even though they are rather faint (magnitudes from 10.5 to 12). We will show the results of the seismic analysis of the light curves of two of these stars, which have been observed during more than 8 months. This analysis led to the determination of the acoustic-mode global parameters (mean large separation, mean small separation...), lists of frequencies built by comparing the results of several teams, some parameters of the modes, and the rotation period of the stellar surface.

Keywords

seismic analysis solar-type stars Kepler light curves acoustic modes global parameters frequency lists rotation period

Cite

@article{arxiv.1110.0873,
  title  = {Seismic analysis of two solar-type stars observed by Kepler},
  author = {S. Mathur},
  journal= {arXiv preprint arXiv:1110.0873},
  year   = {2011}
}

Comments

4 pages, 1 figure. To appear in the proceedings of the Societe Francaise d'Astronomie et d'Astrophysique (SF2A) meeting, 20-23 June 2011, Paris, France

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