High precision and long-lasting Kepler data enabled us to estimate stellar properties with asteroseismology as an accurate tool .
We performed asteroseismic analysis on six solar-like stars observed by the Kepler mission : KIC 6064910 , KIC 6766513 , KIC 7107778 , KIC 10079226 , KIC 10147635 and KIC 12069127 .
The extraction of seismic information includes two parts .
First , we obtained two global asteroseismic parameters , mean large separation \Delta \nu and frequency of maximum power \nu _ { max } , with autocorrelation function and collapsed autocorrelation function .
Second , we extracted individual oscillation modes \nu _ { nl } with low- l degree using a least-squares fit .
Stellar grid models were built with Yale Rotating Stellar Evolution Code ( YREC ) to analyze stellar properties .
They covered the range of M = 0.8 \sim 1.8 M _ { \odot } with a step of 0.02 M _ { \odot } and [ Fe / H ] = -0.3 \sim 0.4 dex with a step of 0.1 dex .
We used a Bayesian approach to estimate stellar fundamental parameters of the six stars , under the constraints of asteroseismic parameters ( \Delta \nu , \nu _ { max } ) and non-asteroseismic parameters ( T _ { eff } , [ Fe / H ] ) .
We discover that the six targets include five sub-giant stars with 1.2 \sim 1.5 M _ { \odot } and one main-sequence star with 1.08 M _ { \odot } , and with ages in the range of 3 \sim 5 Gyr .