RUI: A Program to Determine the Galactic Gravitational Force Law Using Faint Main-Sequence F-Stars
RUI:利用微弱主序 F 星确定银河引力定律的程序
基本信息
- 批准号:8713183
- 负责人:
- 金额:$ 11.83万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1987
- 资助国家:美国
- 起止时间:1987-12-01 至 1991-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Dr. Lu at Western Connecticut State University will determine the gravitational potential force of our Galaxy as a function of height from the galactic plane. The most important and unique aspect of this study is that it will produce data on a set of uniformly selected faint F type stars which are centered at both the North and South Galactic Poles. These data are required for an investigation of the velocity distribution of the stars, for evidence of a thick disk for the Galaxy, and for the dynamical study of missing mass of the Galaxy. Determination of the gravitational force law as a function of height from the Galactic plane is of fundamental importance to understanding the structure of our Galaxy. Much more observational work is needed to better define the force law and its consequences for the densities of the thin disk, the thick disk, and the halo populations of stars in the Galaxy. A number of efforts are underway, but the results are, as yet, inconclusive. Since an optimum observational method is not clear, it is important to address the problem through observations using several different types of stellar samples. Dr. Lu's research concentrates on a sample of F type stars while other astronomers are focussing on other types of stars.
西康涅狄格州立大学的卢博士将决定 我们银河系的引力势是 银河平面的高度。 这一最重要且独特的 这项研究的一个方面是,它将产生一组数据, 均匀选择的微弱F型星,中心位于 银河系南北极 需要这些数据, 研究恒星的速度分布, 银河系厚盘的证据,以及动力学 研究银河系的质量缺失。 引力定律的确定 距离银河平面的高度对于 了解银河系的结构 得多 需要进行观测工作,以更好地定义力定律, 它对薄圆盘密度的影响,厚圆盘 盘,和星系中恒星的晕群。 一些 的努力正在进行中,但结果是,到目前为止, 不确定 由于最佳观测方法不是 显然,通过以下方式解决问题很重要 使用几种不同类型的恒星样本进行观测。 卢博士的研究集中在F型恒星的样本上, 其他天文学家则关注其他类型的恒星。
项目成果
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Phillip Lu其他文献
Phillip Lu的其他文献
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