Nonstandard Modeling of a Possible Blue Straggler Star, KIC 11145123

Non-standard modeling of KIC 11145123, a possible blue straggler star, has been asteroseismically carried out based on scheme to compute stellar models with the chemical compositions in their envelopes arbitrarily modified, mimicking effects some interactions other stars through which are thought be born. We have constructed non-standard model star following parameters: $M=1.36M_{\odot}$, $Y_{\mathrm{init}}=0.26$, $Z_{\mathrm{init}}=0.002$, and $f_{\mathrm{ovs}}=0.027$, where $f_{\mathrm{ovs}}$ is extent overshooting described as an exponentially decaying diffusive process. The modification down depth $r/R\sim0.6$ $\Delta X$, difference surface hydrogen abundance between envelope-modified unmodified models, $0.06$. residuals observed frequencies comparable those for previous computed assuming standard single-star evolution, suggesting that it was born relatively ordinary initial helium $\sim0.26$ compared ($\sim0.30$--$0.40$), then experienced compositions, gained envelope. Detailed analyses implied elemental diffusion deep radiative region might much weaker than assumed current evolutionary calculations; we need extra mechanisms inside rendering more intriguing target further investigated.