arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1910.04065astro-ph.GA
收藏

全色SED拟合码和建模技术

Panchromatic SED fitting codes and modelling techniques

Maarten Baes

摘要:

模拟和解释星系的SED已经成为河外天文学家掌握的关键工具之一。理想情况下,我们希望通过对其SED的详细研究,我们可以推断出星系的正确物理性质和演化历史。在过去的十年中,全色SED拟合(即在整个紫外亚毫米波长范围内对SED进行建模)取得了巨大的进步。几个先进的新的代码已经开发,几乎所有的基础上贝叶斯推断建模。在这篇评论中,我们简要地触及全色SED建模所需的不同成分,并讨论了贝叶斯SED建模的方法和一些重要方面。目前的不确定性和全色SED建模的局限性进行了讨论,我们探讨了一些途径,如何在不久的将来,模型和技术可能会得到改善。

英文摘要:

Modelling and interpreting the SEDs of galaxies has become one of the key tools at the disposal of extragalactic astronomers. Ideally, we could hope that, through a detailed study of its SED, we can infer the correct physical properties and the evolutionary history of a galaxy. In the past decade, panchromatic SED fitting, i.e. modelling the SED over the entire UV-submm wavelength regime, has seen an enormous advance. Several advanced new codes have been developed, nearly all based on Bayesian inference modelling. In this review, we briefly touch upon the different ingredients necessary for panchromatic SED modelling, and discuss the methodology and some important aspects of Bayesian SED modelling. The current uncertainties and limitations of panchromatic SED modelling are discussed, and we explore some avenues how the models and techniques can potentially be improved in the near future.

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。

↑