The α-enhanced Influences on Stellar Evolution
Using Eggletons code, we systematically show the differences in stellar evolution between scaled-solar and a-enhanced metal mixtures. As an input, the OPAL high temperature opacities are used for log( T/K) > 4.00, and the new Wichita State low temperature opacities are used for log(T/K) ≤ 4.00. In our calculations, the masses of stars range from 0.25 to 80.OMo, spaced by ΔlogM= 0.10 or 0.05. The values of metallicities Z are respectively as 0.0001, 0.0003, 0.001, 0.004, 0.01, 0.02, 0.03, 0.04, 0.06, 0.08 and 0.10. We show that α-enhancement can make stellar effective temperature and luminosity higher, and evolutionary age smaller.
aboundances - stars evolution - stars general - stars
J.P. Guo F.H. Zhang X.F. Chen Z.W. Han
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, China National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, China
国际会议
The 10th Asian-Pacific Regional International Astronomical Union Meeting(第十届亚洲及太平洋地区天文学大会 APRIM)
昆明
英文
114-115
2008-08-03（万方平台首次上网日期，不代表论文的发表时间）