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arXiv 0802.2665astro-ph
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星系模型的模型星:$α$ --恒星星族模型的增强

Model stars for the modelling of galaxies: $α$-enhancement in stellar populations models

P. Coelho

摘要:

恒星星族(SP)模型是理解星系和星系团观测的重要工具。SP模型的主要组成部分之一是恒星光谱库,经验和理论库都可以用于此目的。在这里,我将首先简要概述使用理论库(即模型恒星)来生成我们的星系模型的利弊。然后,我将解决的问题,如何理论库可以用来模拟恒星星族,特别是探索的$α$ -增强光谱观测的效果。

英文摘要:

Stellar population (SP) models are an essential tool to understand the observations of galaxies and clusters. One of the main ingredients of a SP model is a library of stellar spectra, and both empirical and theoretical libraries can been used for this purpose. Here I will start by giving a short overview of the pros and cons of using theoretical libraries, i.e. model stars, to produce our galaxy models. Then I will address the question on how theoretical libraries can be used to model stellar populations, in particular to explore the effect of $α$-enhancement on spectral observables.

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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