恒星形成区红外消光规律讨论

Extinction in the Infrared toward Star Formation Regions

恒星形成区的红外消光研究不仅有利于增进对年轻天体物理性质的了解,也是进一步研究尘埃颗粒特性的基础。首先,简述了星际消光规律与红化的概念、红外观测研究的发展历史、相关领域的研究进展以及恒星形成区消光规律的研究意义。然后,重点回顾了观测数据常用分析方法、常用观测天区和研究波段,并在总结已有研究结果的基础上,对基于测光的3种恒星形成区消光研究方法,包括RC法、色余比法和参考天区法进行了分析、优缺点讨论和比较。最后,对消光与红化研究领域已有的研究成果和主要前沿问题进行了概述。

Interstellar dust extinction is fields of astronomical studies. Interstellar one of the key issues for investigations of various extinction is wavelength dependent and is known to vary much less among different lines of sight in the infrared than it does in the optical and ultraviolet. As stellar sources located within or behind star forming regions suffer from increasing amounts of interstellar dust along the line of sight, it is important to make measurements of the interstellar extinction toward these regions. Investigation on extinction in the infrared is the basis for studying the physics of young stellar objects in star forming regions, as well as the spacial distribution and the properties of interstellar dust. It can provide, in the meanwhile, constraints to interstellar grain models. In this paper, we first present an overview of the definition of interstellar extinction and reddening law, its historical studies, the progresses and its various applications in related fields. This is followed by a detailed review and comparison of the traditional methods for determining interstellar extinction toward star formation regions, which include the red cluster （RC） method, color excess ratio method and reference field method. In the end, we outline the major issues and future perspectives in the study of interstellar extinction and reddening.