Constraining Stellar Evolutionary Models

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。加州理工学院的安德鲁·f·博登（Andrew F. Boden）将对双星在不同生命阶段的特性进行研究。双星是恒星演化的基本校准器，因为恒星的质量和到每个系统的距离可以精确地确定。这反过来又产生了恒星的光度，用来衡量核能产生的速度。该奖项将支持一个已建立的双星干涉测量、天体测量和径向速度的项目，包括最近形成的双星和具有高丰度铁峰元素的双星。该项目有望改进恒星的物理模型，并提供关于恒星形成过程的重要信息。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Dr. Andrew F. Boden of the California Institute of Technology will undertake a study of the properties of binary stars at various stages of their lives. Binary stars are fundamental calibrators of stellar evolution, since the masses of the stars and the distance to each system can be accurately determined. This in turn yields the stellar luminosity, which measures the rate of nuclear energy generation. This award will support an established program of interferometric, astrometric, and radial velocities of binaries, including recently formed binaries and those with a high abundance of iron-peak elements. The project is expected to improve physical models of stars and to provide important information on the process of star formation.