恒星辐射不透明度对赫罗图中蓝回绕的影响(英文)  

THE ROLE OF STELLAR RADIATIVE OPACITIES IN TRIGGERING BLUE LOOPS

作　　者：王菲鹿[1] 

机构地区：[1]中国科学院国家天文台,北京100012

出　　处：《紫金山天文台台刊》2003年第2期65-69,共5页

摘　　要：使用不同的恒星辐射不透明度数值 ,对 5至 9个太阳质量恒星的演化模型进行计算 ,来研究辐射不透明度对赫罗图中蓝回绕的影响。结果表明在赫罗图中 ,使用OPAL不透明度值的恒星演化迹中存在着蓝回绕。而且 ,随着辐射不透明度的增加 。Stellar evolution with various opacities has been studied for the stellar mass range M/M ⊙ = 5-9. The stellar models evolve beyond the core He burning phase, with the aim of investigating the role of opacities in triggering blue loops in the Hertzsprung Russell diagram (HRD). As to the evolutionary sequences with OPAL opacities, the blue loop exists in the HRD. And the blue loop shrinks rapidly and can be fully suppressed with increasing opacities.

关 键 词：恒星:演化 恒星:赫罗图和颜色-星等图 

分 类 号：P152[天文地球—天文学]