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

AST 0307393 PI：Jon Holtzman机构：新墨西哥州州立大学Holtzman博士，在这个与德克萨斯大学埃尔帕索分校（AST-0307532）的Verne Smith博士的合作项目中，将开展一个多方面的项目，这将导致对银河系星星形成的更好理解。 他们的方法将联合收割机两种广泛使用的技术结合起来，以加强人们可以从单独应用任何一种技术中得出的结论。 他们将为依巴谷星表中体积有限的演化恒星样本创建一个高分辨率光谱观测的同质数据库，并从中推导出丰度，从而调查太阳附近的星星形成历史，并将联合收割机这一丰度信息与色星等图结合起来。 然后，他们将开发银河系化学演化的模型，这些模型受到这颗星星形成历史和详细丰度分布的约束。 他们还计划通过一种类似的技术，将恒星金属丰度的信息与颜色星等图相结合，来研究银河系凸起的星星形成历史。 他们将向社区提供其样本的观测和丰度数据库。 他们还与他们所在机构的本科生和研究生密切合作。 ***

AST 0307393PI: Jon HoltzmanINSTITUTION: New Mexico State University Dr. Holtzman, in this collaborative project with Dr. Verne Smith of University of Texas, El Paso (AST-0307532), 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. ***