AAS 207th Meeting, 8-12 January 2006
Session 100 Cosmology, Early Universe, Cosmic Distance Scale I
Oral, Tuesday, 2:00-3:30pm, January 10, 2006, Salon 1

## [100.03] The Clustering of Photometric Luminous Red Galaxies and its Cosmological Implications

N. Padmanabhan (Princeton U.), D.J. Schlegel (LBNL), U. Seljak (Princeton U.; ICTP, Trieste)

We present the first clustering results for a sample of ~ 600,000 photometrically selected luminous red galaxies from the Sloan Digital Sky Survey. The sample covers an area of ~ 4000 sq. deg, and is approximately volume limited from z=0.2 to z=0.6. These galaxies have accurate photometric redshifts (\sigmaz = 0.03) with calibrated error distributions. We compute the 3D power spectrum of these objects, and find evidence for power (2 \sigma at 600 h-1 {\rm Mpc} , 5.5 \sigma at 300 h-1 {\rm Mpc}) on large scales. We also find evidence for baryonic oscillations at 100 h-1 {\rm Mpc} in the power spectrum at ~2.5 \sigma. We discuss the cosmological implications of these results, both in comparison with other galaxy surveys, as well as in conjunction with CMB and SN data.

Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.