Collaborative Research: The DEEP Survey of the Distant Universe

这是一个与加州大学伯克利分校的Marc Davis合作的研究项目（AST 0071048）。这项研究的目标是进行一个大的，系统的调查星系的红移Z 0.7。这项调查（深河外星系演化探测器- DEEP）旨在测量遥远星系的性质及其在空间的分布。它由两部分组成：一个1小时的巡天（1HS），绘制约50，000个Z 0.7星系的空间位置，和一个3小时的巡天（3 HS），在1HS目标的子样本上，使用HST成像数据测量约5，000个星系的红移，线宽和结构，并比1HS更深入到光度函数中约1个星等。Faber，Davis和合作者将使用这些数据来确定Z~1处星系的基本属性，例如：数量密度，星系相关函数和星系类型函数的聚类统计。他们还将使用来自3 HS的数据来确定暗晕质量和在此红移下的暗物质分布，以及“偏置函数”。“这一合作项目支持夏威夷凯克望远镜的120个夜间观测方案，该方案将收集大约60，000个暗淡星系的光谱数据，目的是阐明暗淡、遥远星系的性质及其空间分布的统计数据。 DEEP调查将在宇宙学上重要的回顾时间提供对宇宙的前所未有的详细观察。 该调查将产生高红移星系及其环境的信息，其质量与目前可获得的邻近星系数据相当。 这个数据集将通过网络向更广泛的社区开放，它将对替代宇宙学模型的进化预测进行强有力的测试。 通过计算星系的丰度与测量到的红移，人们可以精确地确定宇宙膨胀的加速度，这是对基础物理学的一种考验。 DEEP巡天将充分利用为凯克望远镜准备的一台新的摄谱仪DEIMOS，它具有大视场、高光谱分辨率和宽光谱范围。 DEEP调查的科学方案无法在世界各地的任何其他仪器或望远镜上有效复制。该项目的资金由NSF河外天文宇宙学计划（AST/EXC）和MPS多学科活动办公室提供。

ABSTRACTAST-0071198FaberThis is a collaborative research project with Marc Davis at University of California, Berkeley (AST0071048). The goal of this research is to conduct a large, systematic survey of galaxies with redshifts Z 0.7. This survey (Deep Extragalactic Evolutionary Probe - DEEP) is designed to measure both the properties of distant galaxies and their distribution in space. It consists of two parts: a 1-hour survey (1HS), to map the spatial locations of ~50,000 galaxies with Z0.7, and a 3-hour survey (3HS), on a sub sample of the 1HS targets, to measure redshifts, line widths, and structure for ~5,000 galaxies, using HST imaging data, and going ~ 1 magnitude deeper into the luminosity function than the 1HS. Faber, Davis, and collaborators will use the data to determine fundamental properties of galaxies at Z~1 such as: number densities, the galaxy correlation function, and clustering statistics as a function of galaxy type. They will also use the data from the 3HS to determine the dark halo masses and underlying dark matter distribution at this redshift, as well as the "biasing function." This collaborative project supports a 120 night observing program on the Keck telescope in Hawaii that will garner spectroscopic data on approximately 60,000 faint galaxies, with the goal of elucidating the properties of faint, distant galaxies, as well as the statistics of their spatialdistribution. The DEEP survey will provide an unprecedented, detailed look at the universe at cosmologically significant lookback times. The survey will generate information on high redshift galaxies and their environment that is comparable in quality to data currently available for nearby galaxies. This dataset, which will be made Web accessible to the broader community, willenable powerful tests of the evolutionary predictions of alternative cosmological models. By counting the abundance of galaxies versus measured redshift, one can precisely determine the acceleration rate of the expansion of the Universe, a test of fundamental physics. The DEEP survey will take full advantage of a new spectrograph being prepared for the Keck telescope, DEIMOS, which has a large field of view, high spectral resolution, and wide spectralcoverage. The scientific program of the DEEP survey cannot be replicated efficiently on any other instrument or telescope worldwide. Funding for this project was provided by the NSF program for Extragalactic Astronomy & Cosmology (AST/EXC) and the MPS Office of Multidisciplinary Activities.***