The Protoplanetary Accretion Disk

彼得·博登海默博士和他在加州大学圣克鲁斯分校的同事道格拉斯·林博士将使用理论技术研究从恒星形成到行星形成的过程。理论模型受限于行星系统的性质以及目前可获得的关于年轻恒星物体的丰富观测信息。太阳星云的起源和演化以及行星的形成为理论家提供了一个具有挑战性的问题。理论必须解释大量的观测数据汇编，从陨石丰度异常到年轻恒星的流出特性。最近，来自T金牛座恒星的红外和紫外线数据迅速积累，这使得围绕其中许多天体存在吸积盘的假设得到了加强。这些圆盘可能是原行星圆盘。涉及各种各样的物理过程，必须将其纳入恒星和行星形成的理论研究。博登海默和林博士专注于太阳星云本身的形成和演化。在加强跨学科联系和改进计算机设施的帮助下，正在取得重大进展。

Dr. Peter Bodenheimer and his colleague at the University of California, Santa Cruz, Dr. Douglas Lin will use theoretical techniques to study the progression through the process of star formation to the formation of planets. The theoretical models are constrained by the properties of the planetary system as well as by the rich observational information now available regarding young stellar objects. The origin and evolution of the solar nebula and the formation of the planets provides a challenging problem for the theorist. Theories must explain extensive compilations of observational data, ranging from meteoritic abundance anomalies to the properties of outflows from young stars. Recently there has been a rapid accumulation of infrared and ultraviolet data from T Tauri stars, which has led to the strengthening of the hypothesis that accretion disks are present around many of these objects. These disks may be protoplanetary disks. A wide variety of physical processes is involved and must be incorporated into theoretical studies of star and planet formation. Drs. Bodenheimer and Lin concentrate on the formation and evolution of the solar nebula itself. Significant progress is being made with the aid of enhanced interdisciplinary contact and improved computer facilities.