A fitting LEGACY – modelling Kepler’s best stars

Aarslev, Magnus J.; Christensen-Dalsgaard, Jørgen; Lund, Mikkel N.; Aguirre, Victor Silva; Gough, Douglas

A fitting LEGACY – modelling Kepler’s best stars,
Seismology of the Sun and the Distant Stars – Using Today’s Successes to Prepare the Future – TASC2 & KASC9 Workshop, EPJ Web of Conferences, Volume 160


The LEGACY sample represents the best solar-like stars observed in the Kepler mission[5, 8]. The 66 stars in the sample are all on the main sequence or only slightly more evolved. They each have more than one year’s observation data in short cadence, allowing for precise extraction of individual frequencies. Here we present model fits using a modified ASTFIT procedure employing two different near-surface-effect corrections, one by Christensen-Dalsgaard[4] and a newer correction proposed by Ball & Gizon[1]. We then compare the results obtained using the different corrections. We find that using the latter correction yields lower masses and significantly lower χ2 values for a large part of the sample.

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