Asteroseismology of solar‐type stars with Kepler I: Data analysis

  title={Asteroseismology of solar‐type stars with Kepler I: Data analysis},
  author={Christoffer Karoff and William J. Chaplin and Thierry Appourchaux and Yvonne P. Elsworth and R. A. Garcı́a and G{\"u}nter Houdek and Travis S. Metcalfe and Joanna Molenda–Żakowicz and M{\'a}rio J. P. F. G. Monteiro and Michael J. Thompson and J{\o}rgen Christensen-Dalsgaard and Ronald L. Gilliland and Hans Kjeldsen and Sarbani Basu and Timothy R. Bedding and Tiago L. Campante and Patrick Eggenberger and Stephen T. Fletcher and Patrick Gaulme and Rasmus Handberg and Saskia Hekker and Milena Marti{\'c} and Savita Mathur and Beno{\^i}t Mosser and Clara R{\'e}gulo and Ian W. Roxburgh and David Salabert and Dennis Stello and Graham A. Verner and K'evin Belkacem and Katia Biazzo and Margarida S. Cunha and Michael Gruberbauer and Joyce A. Guzik and Friedrich Kupka and Bernard Leroy and Hans-G. Ludwig and S.Mathis and Arlette Noels and Robert W. Noyes and Teodoro Roca Cort{\'e}s and Martin Roth and K. H. Sato and J{\'e}r{\^o}me Schmitt and Marian Doru Suran and Regner Trampedach and Katrien Uytterhoeven and Rita Ventura and Paul A Wilson},
  journal={Astronomische Nachrichten},
We report on the first asteroseismic analysis of solar-type stars observed by Kepler. Observations of three G-type stars, made at one-minute cadence during the first 33.5 days of science operations, reveal high signal-to-noise solar-like oscillation spectra in all three stars: About 20 modes of oscillation can clearly be distinguished in each star. We discuss the appearance of the oscillation spectra, including the presence of a possible signature of faculae, and the presence of mixed modes in… 

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