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arXiv 1302.0101astro-ph.SR
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双星恒星星族的快速合成

Rapid Binary Stellar Population Synthesis

Zhongmu Li

摘要:

双星是很常见的,因此有必要用双星来模拟恒星星族。介绍了一种快速模拟双星恒星星族的方法。该方法也可用于模拟单星恒星星族。该方法被称为快速恒星族合成,它基于单星和双恒星星族的统计等时线数据库。该数据库可以很容易地从CDS(或请求的作者),并可以方便地用于大多数恒星星族的研究和颜色星等拟合。用这种方法模拟恒星星族的主要特点是可以节省大量的计算时间。与直接用恒星演化程序演化双星的方法相比,快速恒星星族合成方法的计算时间仅为20万分之一。虽然我们可以使用数据库来快速模拟恒星星族,光谱合成中涉及的不确定性很小($\sim$ 0.8%)。本文还介绍了利用单个恒星星族的谱能量分布来模拟复合星族谱能量分布的方法。

英文摘要:

Binary stars are common and it is necessary to model stellar populations using binary stars. We introduce a method to model binary-star stellar populations quickly. The method can also be used to model single-star stellar populations. The method is called rapid stellar population synthesis and it is based on a statistical isochrone database of both single- and bianry-star stellar populations. The database can be obtained easily from the CDS (or on request to the authors) and can be used conveniently for most stellar population studies and colour-magnitude fits. The main feature of using such a technique for modeling stellar populations is that it can save much computing time. Comparing to the method which evolves binary-stars using stellar evolution codes directly, the rapid stellar population synthesis method takes only one of 200,000 of the computing time. Although we can use the database to model stellar populations quickly, the involved uncertainties in spectra synthesis is small ($\sim$ 0.8%). I also introduce the method that uses the spectral energy distributions (SEDs) of single stellar populations to model the SEDs of composite populations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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