Halo Occupation Distribution and Weak Lensing Mass-Richness relation?

GONZALEZ ELIZABETH JOHANA; RODRIGUEZ, FACUNDO; GARCÍA LAMBAS, DIEGO; MERCHÁN, MANUEL; FOËX, GAEL; CHALELA, MARTÍN

Congreso; Latin American XV Regional IAU Meeting; 2016

We study the mass-richness relation based on two independent methods. In the firrst one, we calibrate the scaling relation with weak-lensing mass estimates. In the second procedure we apply a background subtraction technique to derive the probability distribution, P(M h | N). Lensing masses are derived in different richness bins for two galaxy systems sets: the maxBCG catalogue and a catalogue based on a group finder algorithm developed by Yang et al. MaxBCG results are used to test the lensing methodology. The lensing mass-richness relation for the Yang et al. group sample shows a good agreement with P(M | N) obtained independently with a straightforward procedure.