Collaborative Research: The Star Formation History of the Milky Way - Integrating Color-Magnitude Diagram and New Chemical Abundance Information

Smith博士将与新墨西哥州立大学的Jon Holtzman博士（AST-0307393）合作开展一个多方面的项目，这将有助于提高对银河系恒星形成的理解。他们的方法将结合两种广泛使用的技术，以加强人们可以从单独应用任何一种技术中得出的结论。他们将通过创建一个高分辨率光谱观测的同质数据库来研究太阳附近的恒星形成历史，以及由此得出的丰度，用于Hipparcos星表中有限体积的演化恒星样本，并将这些丰度信息与彩色星等图结合起来。然后，他们将开发受恒星形成历史和详细的丰度分布图约束的星系化学演化模型。他们还计划通过类似的技术，将恒星金属丰度的信息与彩色星等图相结合，来研究银河系凸起的恒星形成历史。他们将向社区提供关于其样本的观测和丰度的数据库。他们还与所在机构的本科生和研究生密切合作。

AST 0307532PI: Verne SmithINSTITUTION: University of Texas, El Paso Dr. Smith, in this collaborative project with Dr. Jon Holtzman of New Mexico State University (AST-0307393), will carry out a multi-faceted project that will lead to improved understanding of the star formation of the Milky Way Galaxy. Their approach will combine two widely used techniques to strengthen the conclusions that one could draw from the application of either separately. They will investigate the star formation history of the solar neighborhood by creating a homogeneous database of high-resolution spectroscopic observations, and the abundances derived from it, for a volume-limited sample of evolved stars in the Hipparcos catalog, and combine this abundance information with the color-magnitude diagram. They will then develop models of galactic chemical evolution which are constrained by both this star formation history and the detailed abundance profiles. They also plan to investigate the star formation history of the Galactic bulge by a similar technique of combining information on stellar metallicity with color-magnitude diagrams. They will make available to the community the database of both observations and abundances for their sample. They also work closely with both undergraduate and graduate students at their institutions.