International Research Fellow Awards: Toward a Population II Mass-Luminosity Relation

[902667]鲁宾斯坦国际研究员奖励计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。该计划的奖励为联合研究提供了机会，并利用独特或互补的设施、专业知识和国外的实验条件。该奖项将为Eric P. Rubenstein博士提供为期12个月的博士后研究访问，在Nick B. Suntzeff博士的指导下，与智利拉塞雷纳Cerro Tololo美洲天文台的研究人员一起工作，并为其重返耶鲁大学与Pierre Demarque博士一起工作提供12个月的支持。该项目由美国国家科学基金会数学和物理科学理事会多学科活动办公室及其恒星天文学和天体物理学项目提供部分支持。这个项目将包括测量缺乏金属的恒星的质量光度比。这些恒星被认为是对宇宙意义进行推断的基准。对它们性质的详细测量不仅在恒星天文学研究中很有趣，而且将具有宇宙学意义。观测将使用智利的南半球望远镜进行。在耶鲁大学期间。Rubenstein和Demarque将与理论模型进行广泛的比较，并创建与智利观测相符的新模型。在智利期间，鲁宾斯坦博士将与CITO以及智利大学的各种天文学家建立合作关系，例如活跃于恒星人口工作和超新星研究的玛丽亚·特蕾莎·鲁伊斯和何塞·马萨

9902667RubensteinThe International Research Fellow Awards Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will provide support for a twelve-month postdoctoral research visit by Dr. Eric P. Rubenstein to work with researchers at Cerro Tololo Interamerican Observatory in La Serena, Chile under the direction of Dr. Nick B. Suntzeff, and twelve months of support for a reentry year at Yale to work with Dr. Pierre Demarque. Partial support for this project is provided by NSF's Directorate for Mathematical and Physical Sciences' Office of Multidisciplinary Activities and their Stellar Astronomy and Astrophysics Program.This project will involve the measurement of the mass to luminosity ratio of metal-poor stars. These stars are considered to be benchmarks to allow extrapolations of cosmological significance. Detailed measurement of their properties is not only interesting in stellar astronomical research but will have cosmological implications. The observations will be made using the Southern Hemisphere telescopes in Chile. While at Yale, Drs. Rubenstein and Demarque will make extensive comparisons with theoretical models and create new models compatible with the observations from Chile.While in Chile, Dr. Rubenstein will be establishing collaborations with a variety of astronomers at CITO, as well as from the Universidad de Chile, such as Maria Teresa Ruiz and Jose Maza, who are active in stellar population work and supernovae studies.***