Risa Wechsler - Astronomy and Astrophysics

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SDSS data now covers >8000 sq degrees Cluster finder (maxBCG), uses photometric data to identify BCGs <strong>and</strong> red sequence galaxies More than 800,000 objects with at least 2 bright red galaxies. 172000 with >=10 bright red galaxies dn/dlogN for 0.05
Cluster mass profiles from weak lensing (the galaxy mass correlation function) !" [h M O• pc #2 ] !" [h M O• pc #2 ] !" [h M O• pc #2 ] 10 4 10 3 10 2 10 1 0.1 10 -2 10 4 10 3 10 2 10 1 0.1 10 -2 10 4 10 3 10 2 10 1 0.1 10 -2 10 -2 1 $ N gals $ 3 8 $ N gals $ 9 31 $ N gals $ 40 0.1 1 10 R [h #1 Mpc] Sheldon et al 2005 (in prep) 10 -2 4 $ N gals $ 4 10 $ N gals $ 15 41 $ N gals $ 50 0.1 1 10 R [h #1 Mpc] 10 -2 5 $ N gals $ 5 16 $ N gals $ 20 51 $ N gals $ 75 0.1 1 10 R [h #1 Mpc] 10 -2 6 $ N gals $ 7 21 $ N gals $ 30 76 $ N gals $ 343 0.1 1 10 R [h #1 Mpc] Based on a sample of ~100000 groups (DR3+)
Page 1: Halo Occupation and Cosmology from
Page 5 and 6: M 200 Lensing Mass r200 [h !1 Clust
Page 7 and 8: Adding Density Determined GAlaxies
Page 9 and 10: the recipe 1. populate the simulati
Page 11 and 12: halo occupation this method N gals
Page 13 and 14: First thing to calibrate in the clu
Page 15 and 16: M 200 Lensing Mass Cluster Size 10

Risa Wechsler - Astronomy and Astrophysics

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