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Mapping the Universe: The 2010 Russell Lecture

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arxiv 1110.1380 v1 pith:SLPWMODR submitted 2011-10-06 astro-ph.CO

Mapping the Universe: The 2010 Russell Lecture

classification astro-ph.CO
keywords redshiftuniverseclustersdistributionmasspowersurveysapplying
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Redshift surveys are a powerful tool of modern cosmology. We discuss two aspects of their power to map the distribution of mass and light in the universe: (1) measuring the mass distribution extending into the infall regions of rich clusters and (2) applying deep redshift surveys to the selection of clusters of galaxies and to the identification of very large structures (Great Walls). We preview the HectoMAP project, a redshift survey with median redshift z = 0.34 covering 50 square degrees to r= 21. We emphasize the importance and power of spectroscopy for exploring and understanding the nature and evolution of structure in the universe.

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