Comprehensive analytic formulae for stellar evolution as a function of mass and metallicity
Comprehensive analytic formulae for stellar evolution as a function of mass and metallicity
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DOI：
10.1046/j.1365-8711.2000.03426.x
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发表时间：
2000-01
影响因子：
4.8
通讯作者：
J. Hurley;O. Pols;C. Tout
中科院分区：
文献类型：
--
作者：
J. Hurley;O. Pols;C. Tout
我们提出了在质量M和金属丰度Z的大范围内近似恒星演化的解析公式。给出了恒星的光度、半径和核心质量作为年龄M和Z的函数，适用于从零年龄主序到（包括）残余阶段的所有阶段。在大多数情况下，我们发现连续公式精确到详细模型的5%以内。这些公式对于需要非常快速但准确地评估恒星性质的种群合成等目的非常有用，特别是与n体代码结合使用时。我们描述了一个可以与这些公式一起使用的质量损失处方，并研究了由此产生的恒星残骸分布。
We present analytic formulae that approximate the evolution of stars for a wide range of mass M and metallicity Z. Stellar luminosity, radius and core mass are given as a function of age, M and Z, for all phases from the zero-age main sequence up to, and including, the remnant stages. For the most part we find continuous formulae accurate to within 5 per cent of detailed models. These formulae are useful for purposes such as population synthesis that require very rapid but accurate evaluation of stellar properties, and in particular for use in combination with N-body codes. We describe a mass-loss prescription that can be used with these formulae, and investigate the resulting stellar remnant distribution.