Fundamental properties and Seismological Analysis of three Kepler stars

Liu Kang, liukangscorpio@live.cn, Beijing Normal University, China
Bi Shaolan Beijing Normal University

Abstract
Context:The evolved main-sequence Sun-like stars KIC 11395018, KIC 10273246 and KIC 10920273 were observed with the NASA Kepler satellite for approximately ten months. Such continuous and long observations are unprecedented for solar-type stars. Aims:We aimed mainly at estimate atmospheric parameters by constructing models of the structure and evolution of these stars. Methods:Base on the classical observed properties, we considered four additional observed quantities namely lithium abundance, rotational period, average large frequency separation and p-mode frequencies, by combing stellar models with observations, to demonstrate stellar parameters and possible evolutionary status of them. Results and Conclusions: More accurate results of stellar parameters were obtained by using our models than previous studies. The consideration of lithium, rotational period, the average large frequency separation and frequencies helped us obtaining very precise estimations of the star.