论文标题
圆盘的外部光蒸发
The external photoevaporation of planet-forming discs
论文作者
论文摘要
形成行星的圆盘演化并不独立于巨大分子云中的恒星形成和反馈过程。特别是，OB恒星在称为“外部光蒸发”的过程中发出紫外线辐射，该紫外线辐射加热和分散盘。该过程被理解为作用于典型恒星形成区域中行星圆盘的主要环境影响。我们最好的研究圆盘在附近，在稀疏的恒星群中，外部光蒸发效果不佳。但是，大多数碟片有望在更强的紫外线环境中居住。因此，了解外部光蒸发是了解大多数圆盘如何发展的关键，因此大多数行星的形成方式。在这里，我们回顾了我们对外部光蒸发的理论和观察性理解。我们还为未来提供了关键的发展，以解决现有的未知数，并确定外部光蒸发在光盘进化和行星形成过程中的全部作用。
Planet-forming disc evolution is not independent of the star formation and feedback process in giant molecular clouds. In particular, OB stars emit UV radiation that heats and disperses discs in a process called 'external photoevaporation'. This process is understood to be the dominant environmental influence acting on planet-forming discs in typical star forming regions. Our best studied discs are nearby, in sparse stellar groups where external photoevaporation is less effective. However the majority of discs are expected to reside in much stronger UV environments. Understanding external photoevaporation is therefore key to understanding how most discs evolve, and hence how most planets form. Here we review our theoretical and observational understanding of external photoevaporation. We also lay out key developments for the future to address existing unknowns and establish the full role of external photoevaporation in the disc evolution and planet formation process.
