CAREER: A Survey for High Redshift Galaxy Clusters: A Research and Education Resource

现存最大的高红移样本(0.4。z。1.1)对星系团进行整理和分析，为解决宇宙学、大尺度结构、星系团演化和星系演化等问题提供信息。星系团的数量密度、光度函数、丰富度分布和结构特性在宇宙学模型中是极好的鉴别器，特别是在高红移时，许多标准模型预测星系团的快速演化。数百个星系团的样本将被汇编，这也将提供高红移星系团相关函数的最佳测量方法，并可能勾勒出遥远星系“长城”的类似物。通过分析数千个遥远星系团的星等和颜色以及数百个星系团的光谱所获得的信息，将限制星系在红移时的演化模型，而目前这方面的限制很少。这些信息还将有助于确定星系团形成时代的限制。大量高z最亮星系团（BCGs）样本的识别，以及对这些星系团的观测数据，将使我们能够研究BCG的演化以及BCGs与星系团环境之间的联系。一种新的高z聚类搜索技术将能够从数百个聚类的独特样本中编译数据，并使用数据分析的结果来解决这些问题。光谱和光度观测的最新结果证明了该技术的成功。教育工作分为四个方面：(1)通过利用当前技术和研究等级数据的课程开发来加强对本科生的教育；(2)建立一个与网络相关的教学材料的中央交换中心，宣传那些试图将互联网发展成有效的天文学教学工具的人的努力；(3)研究生指导；(4)公众宣传。通过公开讲座向成年人和通过ASTRO项目继续与当地教师建立为期两年的伙伴关系向小学生进行公众宣传。第一个项目将是创建和实施基于互联网的实验室项目，允许本科生直接操作从许多来源提取的研究质量数据，包括对星系团的调查。有几个实验项目已经写好了，可以在网上找到，并在课程中使用。第二个项目是在互联网上建立和维护一个中心位置，教师可以在那里分享他们开发的材料。将会有一个非正式的讨论小组来指导研究生。此外，还将为4-9年级的学生参加在利克天文台和太平洋天文学会的ASTRO项目举办的夏季公众访问讲座。* * *

9733111 ZARITSKY The largest existing sample of high redshift (0.4 . z . 1.1) galaxy clusters will be compiled and analyzed to provide information to address issues in cosmology, large-scale structure, cluster evolution, and galaxy evolution. The number density, luminosity function, richness distribution, and structural properties of clusters are excellent discriminators among cosmological models, particularly so at high redshifts where many of the standard models predict rapid evolution of galaxy clusters. The sample of hundreds of clusters that will be compiled will also provide the best available measure of the high-redshift cluster correlation function and possibly outline distant analogs of the local "Great Wall" of galaxies. The information gained from analyzing the magnitudes and colors of thousands, and spectra of hundreds, of distant cluster galaxies will constrain models of galaxy evolution at a redshift where there are currently very few constraints. The information will also help to place limits on the formation epoch of cluster galaxies. The identification of a large sample of high-z brightest cluster galaxies (BCGs), and the data from observations of these clusters, will allow us to study BCG evolution and the connection between BCGs and the cluster environment. A novel search technique for high-z clusters will enable the compilation of data from a unique sample of hundreds of clusters and use the results of the analysis of the data to address these issues. Recent results from spectroscopic and photometric observations have demonstrated the success of the technique. The educational efforts are divided into four areas: (1) enhancing the education of undergraduates through course development that utilizes current technology and research-grade data, (2) establishing a central clearinghouse for web-related instructional materials that publicizes the efforts of those who are attempting to develop the Internet into an effective teaching tool for astronomy, (3) gradua te student mentoring, and (4) public outreach. The public outreach will be both to adults through public lectures and to elementary school children through the continuation of a two-year partnership with a local teacher through Project ASTRO. The first project will be the creation and implementation of Internet-based laboratory projects that allow undergraduate students to directly manipulate research-quality data drawn from many sources, including the survey of clusters of galaxies. There are several laboratory projects already written and available on the Web and which have been used in courses. The second project is to establish and maintain a central location on the Internet where instructors can share material they develop. There will be an informal discussion group organized for mentoring of graduate students. There will also be involvement in the summer public visitor lectures at Lick Observatory and in the Astronomical Society of the Pacific's Project ASTRO for grades 4-9. ***