The DEEP Survey of the Distant Universe

对遥远宇宙的深度调查

• 批准号: 0071048
• 负责人: Marc Davis
• 金额: $ 83.11万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0071048&HistoricalAwards=false
• 关键词: DEEP; Survey; Distant; Universe

AST-0071048DavisThis is a collaborative research project with Sandra Faber and colleagues at University of California, Santa Cruz (AST0071198). 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.***

AST-0071048Davis这是与加州大学圣克鲁斯分校的 Sandra Faber 及其同事合作的研究项目 (AST0071198)。 这项研究的目标是对红移 Z 0.7 的星系进行大规模、系统的调查。这项调查（深河外演化探测器 - DEEP）旨在测量遥远星系的特性及其在空间中的分布。它由两部分组成：一个 1 小时勘测 (1HS)，用 Z0.7 绘制约 50,000 个星系的空间位置；以及一个 3 小时勘测 (3HS)，针对 1HS 目标的子样本，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 深入约 1 个光度函数。 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：数密度、星系相关函数以及作为星系类型函数的聚类统计数据。他们还将使用 3HS 的数据来确定暗晕质量和红移处的潜在暗物质分布，以及“偏置函数”。该合作项目支持夏威夷凯克望远镜的 120 个夜间观测计划，该计划将收集约 60,000 个微弱星系的光谱数据，目的是阐明遥远微弱星系的特性及其空间分布的统计数据。 DEEP 调查将在具有宇宙学意义的回顾时间内对宇宙进行前所未有的详细观察。 该调查将生成有关高红移星系及其环境的信息，其质量与目前附近星系可用的数据相当。 该数据集将通过网络供更广泛的社区访问，将能够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项测试。 DEIMOS深度探测将充分利用为凯克望远镜准备的新型摄谱仪DEIMOS，该摄谱仪具有大视场、高光谱分辨率和宽光谱覆盖范围。 DEEP 调查的科学计划无法在全球任何其他仪器或望远镜上有效复制。该项目的资金由 NSF 河外天文学和宇宙学项目 (AST/EXC) 和 MPS 多学科活动办公室提供。***