Collaborative Research: PRIMUS, Mapping the Universe at Redshift One

这是一个合作项目，牵头项目0607686/Burles，非牵头项目0607541/Eisenstein和0607701/Blanton。该项目代表了PRISm多天体巡天（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，该体积与本机宇宙中已经绘制的体积相当。 位于智利拉斯坎帕纳斯的6.5米麦哲伦望远镜所允许的大视场中的低分辨率棱镜光谱学，以比以前高得多的速率确定了暗星系的红移。 这一阶段包括调试仪器，并在天空区域获得大约125，000个星系红移，以及其他已经获得的深层数据。 它将能够测量星系的生长，形态的环境依赖性和相关函数，所有这些都是时间的函数。 除了提供最先进的样品外，PRIMUS调试项目还将测试完整的PRIMUS计划。原始数据和简化数据将在可用时公开，为天体物理学界提供宝贵的资源。 如果成功，该项目还可能影响未来大型调查的设计。 由于红移将二维图像转化为三维地图，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推广和教学工具。 研究生的参与是至关重要的，本科生的参与将受到鼓励。

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.