Large Scale Structure in the Sloan Digital Sky Survey

Details Large Scale Structure in the Sloan Digital Sky Survey Large Scale Structure in the Sloan Digital Sky Survey

2003-03-07

arxiv.org/abs/astro-ph/0303175v1

Astronomy and Astrophysics

Astrophysics

12 pages, 5 figures. To appear in "Carnegie Observatories Astrophysics Series, Vol. 2: Measuring and Modeling the Universe", e

Scientific paper

The primary observational goals of the Sloan Digital Sky Survey are to obtain CCD imaging of 10,000 deg^2 of the north Galactic cap in five passbands, with a limiting magnitude in the r-band of 22.5, to obtain spectroscopic redshifts of 10^6 galaxies and 10^5 quasars, and to obtain similar data for three ~ 200 deg^2 stripes in the south Galactic cap, with repeated imaging to allow co-addition and variability studies in at least one of these stripes. The resulting photometric and spectroscopic galaxy datasets allow one to map the large scale structure traced by optical galaxies over a wide range of scales to unprecedented precision. Results relevant to the large scale structure of our Universe include: a flat model with a cosmological constant Omega_Lambda=0.7 provides a good description of the data; the galaxy-galaxy correlation function shows departures from a power law which are statistically significant; and galaxy clustering is a strong function of galaxy type.

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