Star Formation in Galaxies

Tohline博士将使用先前开发的引力流体力学代码研究恒星形成。具体来说，他将解决三个问题——绘制出原恒星吸积盘在引力破碎时变得动态不稳定的临界状态，检查具有非平凡内部运动的椭球形或哑铃形平衡结构的动态稳定性，以及检查弯曲的HI星系盘的演化，以确定盘沉降过程与恒星形成全局过程的联系程度。＊＊＊

Tohline 95-28424 Dr. Tohline will study stellar formation using the gravitational hydrodynamics code developed previously. Specifically, he will address three problems -- to map out the critical states at which protostellar accretion disks become dynamically unstable to gravitational fragmentation, to examine the dynamical stability of ellipsoidal or dumbbell-shaped equilibrium structures with nontrivial internal motions, and to examine the evolution of warped HI galaxy disks to determine the extent to which the disk settling process is connected to the global process of star formation. ***