Collaborative Research: PRIMUS, Mapping the Universe at Redshift One

这是一个合作项目，领导0607686/Burles，非领导0607541/Eisenstein和0607701/Blanton。该项目代表了PRIsm多目标巡天（PRIMUS）的第一阶段，其最终目标是绘制红移1附近的大体积宇宙，与已经在本地宇宙中绘制的体积相当。在智利拉斯坎帕纳斯的6.5米麦哲伦望远镜允许的大视场中，低分辨率棱镜光谱以比以前高得多的速度确定了暗星系的红移。这一阶段包括调试仪器，并在已有的其他深层数据的基础上获得天空区域约125,000个星系的红移。它将能够测量星系的增长，形态对环境的依赖，以及相关函数，所有这些都是时间的函数。除了提供最先进的样品外，PRIMUS调试项目还将测试整个PRIMUS的计划。原始数据和简化后的数据都将公开，为天体物理学界提供宝贵的资源。如果成功，这个项目也可能影响未来大型调查的设计。由于红移将二维图像转换为三维地图，因此该项目还将探索可以从如此巨大的宇宙体积的宇宙地图中创建的扩展和教学工具。研究生的参与至关重要，鼓励本科生的参与。

This is a collaborative project, lead 0607686/Burles, non-leads 0607541/Eisenstein and 0607701/Blanton.This project represents the first stage of the PRIsm MUlti-object Survey (PRIMUS), whose ultimate goal is to map a large volume of the Universe around redshift one, a volume comparable to those already mapped in the local Universe. Low-resolution prism spectroscopy in the large field of view allowed by the 6.5m Magellan telescope at Las Campanas, Chile, determines redshifts for faint galaxies at much higher rates than previously possible. This phase covers commissioning the instrument and obtaining about 125,000 galaxy redshifts in regions of the sky with other deep data already available. It will enable measurement of the growth of galaxies, the environmental dependence of morphology, and the correlation function, all as a function of time. In addition to providing a state-of-the-art sample, the PRIMUS commissioning project will test plans for the full PRIMUS.Both raw and reduced data will be made public as they become available, providing a valuable resource to the astrophysics community. If successful, this project is also likely to influence the design of future large surveys. Since redshifts turn two-dimensional images into three-dimensional maps, the project will also explore the outreach and teaching tools that can be created from cosmic maps of such a tremendous volume of the Universe. Graduate student involvement is critical, and undergraduate involvement will be encouraged.