Supported by the National Natural Science Foundation of China;supported by the Ministry of Science and Technology of the People's Republic of China(Grant No.2007CB815406);the National Natural Science Foundation of China(Grant Nos.10773003,10933002 and 10778601)
We test the possible evolutionary tracks of stars with various masses (1.8 M,1.9 M,2.0 M,2.1 M,2.2 M)and metallicities Z(0.008,0.010, 0.012),including both models with and without convective core overshooting.At a...