Grids of synthetic stellar spectra

Author:

Martins L.1,Coelho P.2

Affiliation:

1. NAT - Universidade Cruzeiro do Sul, São Paulo, SP 08060-070, Brazil.

2. Instituto de Astronomia, Geofísica e Ciências Atmosféricas da Universidade de São Paulo, São Paulo, SP 08060-070, Brazil.

Abstract

Grids of stellar spectra are extensively used in astrophysics in a range of applications, from derivation of atmospheric parameters in observed stellar spectra, to archaeological studies in integrated light of galaxies. Theoretical stellar libraries have been increasingly used in recent years to overcome limitations of empirical libraries by, for example, exploring atmospheric parameter spaces not well represented in the latter. Nevertheless, there are still caveats and stellar libraries can only partially model observations with accuracy. Here we discuss the current need for synthetic libraries, in particular for applications in stellar population studies. Next we briefly present a non-extensive sample of libraries available in the literature, and we then highlight how better atomic and molecular opacities are much needed to overcome the deficiencies of current synthetic libraries.

Publisher

Canadian Science Publishing

Subject

General Physics and Astronomy

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Assessing the performance of LTE and NLTE synthetic stellar spectra in a machine learning framework;Monthly Notices of the Royal Astronomical Society;2020-08-26

2. To use or not to use synthetic stellar spectra in population synthesis models?;Monthly Notices of the Royal Astronomical Society;2019-10-30

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