U.S.-France Cooperative Research: Numerical Studies of the Formation and Evolution of Galaxies

这项持续的赠款支持美国-法国合作研究 哥伦比亚大学的凯文·普伦德加斯特和 我是马赛天文台的埃万杰莉·阿萨纳苏拉。 的 他们的研究目标是发展数值模拟 星系的形成和演化 恒星、气体和暗物质的模型。星星形成， 质量损失，风和超新星加热，以及辐射冷却 气体包括在其数字代码中。 调查人员 建议继续对矮椭圆星系进行研究，并 将数字编码扩展到螺旋和巨型椭圆 星系 美国调查员将他的 专业的数值模拟。 这一点得到了 法国调查员在编码、调试和 生产 该项目利用法国的设施， 包括Cray、Sun、Vax和Microvax计算机， 运行这些程序的法国软件。 这项研究项目将促进对形成的理解 星系和宇宙的结构。拟议 数字技术是独特的，可用于其他 天体物理学的问题。

This continuing grant supports U.S.-France cooperative research in astronomy between Kevin Prendergast of Columbia University and Evangelie Athanassoula of the Marseille Observatory. The objective of their research is to develop numerical simulations of the formation and evolution of galaxies using a three-fluid model for the stars, the gas and dark matter. Star formation, mass loss, wind and supernova heating, and radiative cooling of gas are included in their numerical code. The investigators propose to continue their research on dwarf ellipticals and to extend the numerical code to spiral and giant elliptical galaxies. The U.S. investigator brings to this collaboration his expertise in numerical simulations. This is complemented by the French investigator's experience in coding, debugging and production. The project takes advantages of French facilities, which include Cray, Sun, Vax and Microvax computers, and utilizes French software for running these programs. This research project will advance understanding of the formation of galaxies and the structure of the universe. The proposed numerical techniques are unique and may be used for other problems in astrophysics.