The Evolution of Angular Momentum in Low-Mass Stars

Terndrup博士的项目是观察和理论的结合，以辨别核心/包膜相互作用的相对重要性，磁盘/包膜锁定以及风带来的角动量损失，这些可以通过测量大范围质量和年龄的旋转的观测来解开。这个结果应该是一个关于几个年龄在1-100 Myr的星团中低质量恒星的旋转周期和旋转速度的大数据基础。Li丰度的测量也将得到，作为外恒星包层中混合量的测量，以及这种混合如何依赖于旋转。理论上，该项目将继续并扩大目前的努力，在恒星演化模型中包括圆盘、风和磁场的影响。＊＊＊

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. ***