The Evolution of Angular Momentum in Low-Mass Stars

95-28227 Terndrup，Donald Terndrup博士的项目是观测和理论的结合，以辨别核心/包层相互作用、盘/包层锁定和通过风的角动量损失的相对重要性，这些可以通过测量大范围质量和年龄范围内的自转的观测来解开。产额应该是一个关于低质量恒星的自转周期和自转速度的大型数据库，这些恒星位于几个年龄为1-100 Myr的星系团中。锂丰度的测量也将被获得，作为外部恒星包层中混合量的测量，以及这种混合如何依赖于自转。理论上，该项目将继续并扩大目前的努力，将圆盘、风和磁场的影响包括在恒星演化的模型中。***

95-28227 Terndrup, Donald Dr. Terndrup's project is a combination of both observation and theory to discern the relative importance of core/envelope interactions, disk/envelope locking and angular momentum loss through winds, which can be disentangled by observations which measure rotation over a large range of mass and age. The yield should be a large data base on rotation periods and rotation speeds for low mass stars in several clusters with ages 1-100 Myr. Measures of Li abundances will also be obtained, as a measure of the amount of mixing in the outer stellar envelopes and how that mixing depends on rotation. Theoretically, the project will continue and expand current efforts to include the effects of disks, winds, and magnetic fields in models of stellar evolution. ***