标题： 高运动速度云团真的为星系恒星形成提供燃料吗？ 显示英文标题

标题： Do High-Velocity Clouds Really Fuel Galactic Star Formation?

摘要： 已有令人信服的证据支持这样一个观点，即弥漫本星系群的一大片河外气体云与银河高纬度速度云（HVCs）相关联。 我们对这一被称为Blitz/Spergel图景的观点的优点和缺点进行了评论。 Blitz/Spergel HVCs的空间分布、运动学分布、金属丰度、距离以及发射性质的理论预测将与现有的观测数据进行对比。 显示英文摘要

摘要： Tantalizing evidence has been presented supporting the suggestion that a large population of extragalactic gas clouds permeates the Local Group, a population which has been associated with the Galactic High-Velocity Clouds (HVCs). We comment on both the strengths and weaknesses of this suggestion, informally referred to as the Blitz/Spergel picture. Theoretical predictions for the spatial and kinematic distributions, metallicities, distances, and emission properties of Blitz/Spergel HVCs will be confronted with extant observational data.