The Nearby Universe with 2MASS

尽管观测宇宙学取得了重大进展，但仍然有几个重要的问题可以通过重新审视附近的宇宙来回答。这项研究将利用2微米全天巡天(2MASS)来测量重子和物质的局域分布。主要目标是创建一个星表，包括10万多个星系的红移和1万多个星系的与速度无关的距离，这将是附近宇宙唯一完整的全天地图。请注意，要探测和测量数十兆秒尺度的暗物质，唯一被证实的方法是测量星系特有的速度场。然后这些数据将被用于星系密度、类型和性质的各种研究，以及星系流场、非线性偏差和结构形成的研究。重要的教育和公共宣传活动将包括研究生、本科生和高中生的研究、公共演讲、双语(英语/西班牙语)互动网站，以及数据的及时提供。

AST-0406906HuchraDespite major progress in observational cosmology, there remain several questions of significance that could be answered with a new look at the nearby Universe. This research will measure the local distributions of baryons and matter using the 2 Micron All-Sky Survey (2MASS). The primary goal is the creation of a catalog with redshifts for more than 100,000 galaxies and velocity-independent distances for more than 10,000 galaxies, which will be the only complete, all-sky map of the nearby Universe. Note that the only proven method for detecting and measuring dark matter on scales of tens of mega-parsecs is to measure the galaxy peculiar velocity field. These data will then be used for various studies of galaxy density, types and properties, and of the galaxy flow fields, non-linear biasing, and structure formation. Significant education and public outreach activities will include graduate, undergraduate, and high school student research, public talks, a bilingual (English/Spanish) interactive web site, and prompt availability of the data.