Asteroseismic analysis of Kepler target KIC 2837475

The ratios r(01) and r(10) of small-to-large separations of KIC 2837475 primarily exhibit an increasing behaviour in the observed frequency range. The calculations indicate that only the models with overshooting parameter delta(ov) between approximately 1.2 and 1.6 can reproduce the observed ratios r(01) and r(10) of KIC 2837475. The ratios r(01) and r(10) of the frequency separations of p modes with inner turning points that are located in the overshooting region of convective core can exhibit an increasing behaviour. The frequencies of the modes that can reach the overshooting region decrease with the increase in delta(ov). Thus, the ratio distributions are more sensitive to delta(ov) than to other parameters. The increasing behaviour of the KIC 2837475 ratios results from a direct effect of the overshooting of convective core. The characteristic of the ratios provides a strict constraint on stellar models. Observational constraints point to a star with M = 1.490 +/- 0.018 M-circle dot, R = 1.67 +/- 0.01 R-circle dot, age = 2.8 +/- 0.4 Gyr, and 1.2 less than or similar to delta(ov) less than or similar to 1.6 for KIC 2837475.