Evolutionary tracks and isochrones for low- and intermediate-mass stars: From 0.15 to 7 , and from to 0.03
Evolutionary tracks and isochrones for low- and intermediate-mass stars: From 0.15 to 7 , and from to 0.03
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DOI：
10.1051/aas:2000126
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发表时间：
1999-10
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影响因子：
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通讯作者：
L. Girardi;A. Bressan;G. Bertelli;C. Chiosi
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文献类型：
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作者：
L. Girardi;A. Bressan;G. Bertelli;C. Chiosi
本文提出了一个适用于用星族合成方法模拟星星团和星系的恒星演化轨迹大网格。这些轨迹是针对初始化学组成（Z = 0：0004;Y =0：23）、（Z =0：001;Y =0：23）、（Z =0：004;Y = 0：24）、（Z =0：008;Y =0：25）、（Z =0：019;Y =0：273）（太阳组成）和（Z =0：03;Y =0：30）呈现的。它们是用更新的不透明度和状态方程以及适度的对流过冲来计算的。初始质量范围从0：15 M到7 M，演化阶段从零年龄主序（ZAMS）到热脉冲AGB区或碳点火。我们还提出了一个额外的一组模型，与太阳的组成，计算使用经典的史瓦西标准对流边界。从这些径迹中，我们导出了Johnson-Brachins UBVRIJHK宽波段测光系统的理论等时线。
We present a large grid of stellar evolution- ary tracks, which are suitable to modelling star clusters and galaxies by means of population synthesis. The tracks are presented for the initial chemical compositions (Z = 0:0004;Y =0 :23), (Z =0 :001;Y =0 :23), (Z =0 :004;Y = 0:24), (Z =0 :008;Y =0 :25), (Z =0 :019;Y =0 :273) (solar composition), and (Z =0 :03;Y =0 :30). They are com- puted with updated opacities and equation of state, and a moderate amount of convective overshoot. The range of initial masses goes from 0:15 M to 7 M ,a nd the evo- lutionary phases extend from the zero age main sequence (ZAMS) till either the thermally pulsing AGB regime or carbon ignition. We also present an additional set of mod- els with solar composition, computed using the classical Schwarzschild criterion for convective boundaries. From all these tracks, we derive the theoretical isochrones in the Johnson-Cousins UBVRIJHK broad-band photometric system.