Modelling the Small Scale Clustering ofLuminous Red Galaxies

Details Modelling the Small Scale Clustering ofLuminous Red Galaxies Modelling the Small Scale Clustering ofLuminous Red Galaxies

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21344801w&link_type=abstract

American Astronomical Society, AAS Meeting #213, #448.01; Bulletin of the American Astronomical Society, Vol. 41, p.335

Astronomy and Astrophysics

Astronomy

Scientific paper

We use the small scale measurements of Luminous Red Galaxies (LRGs; Masjedi et al. 2006) from the Sloan Digital Sky Survey (SDSS; York et al. 2000) to model the galaxy 2-point correlation function, ξ(r), on very small scales (0.016 h ˜1 Mpc ≤ r ≤ 0.66 h˜1 Mpc). We use our model to better understand how galaxies occupy dark matter halos. We show that the radial distribution of LRGs within halos is not consistent with an NFW profile. Instead, we find a denstiy profile which requires a much steeper inner slope to best fit the observed data.

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