TY - JOUR
T1 - AMICO galaxy clusters in KiDS-DR3
T2 - cosmological constraints from counts and stacked weak lensing
AU - Lesci, G. F.
AU - Marulli, F.
AU - Moscardini, L.
AU - Sereno, M.
AU - Veropalumbo, A.
AU - Maturi, M.
AU - Giocoli, C.
AU - Radovich, M.
AU - Bellagamba, F.
AU - Roncarelli, M.
AU - Bardelli, S.
AU - Contarini, S.
AU - Covone, G.
AU - Ingoglia, L.
AU - Nanni, L.
AU - Puddu, E.
PY - 2022/3/10
Y1 - 2022/3/10
N2 - Aims: We present a cosmological analysis of abundances and stacked weak lensing profiles of galaxy clusters, exploiting the AMICO KiDS-DR3 catalogue. The sample consists of 3652 galaxy clusters with intrinsic richness λ* ≥ 20, over an effective area of 377 deg2, in the redshift range z ∈ [0.1,0.6]. Methods: We quantified the purity and completeness of the sample through simulations. The statistical analysis has been performed by simultaneously modelling the co-moving number density of galaxy clusters and the scaling relation between the intrinsic richnesses and the cluster masses, assessed through stacked weak lensing profile modelling. The fluctuations of the matter background density, caused by super-survey modes, have been taken into account in the likelihood. Assuming a flat Λ cold dark matter (ΛCDM) model, we constrained Ωm, σ8, S8(Ωm/0.3)0.5, and the parameters of the mass-richness scaling relation. Results: We obtained Ωm = 0.240.04+0.03, σ8 = 0.860.07+0.07, and S8 = 0.780.04+0.04. The constraint on S8 is consistent within 1σ with the results from WMAP and Planck. Furthermore, we got constraints on the cluster mass scaling relation in agreement with those obtained from a previous weak lensing only analysis.
AB - Aims: We present a cosmological analysis of abundances and stacked weak lensing profiles of galaxy clusters, exploiting the AMICO KiDS-DR3 catalogue. The sample consists of 3652 galaxy clusters with intrinsic richness λ* ≥ 20, over an effective area of 377 deg2, in the redshift range z ∈ [0.1,0.6]. Methods: We quantified the purity and completeness of the sample through simulations. The statistical analysis has been performed by simultaneously modelling the co-moving number density of galaxy clusters and the scaling relation between the intrinsic richnesses and the cluster masses, assessed through stacked weak lensing profile modelling. The fluctuations of the matter background density, caused by super-survey modes, have been taken into account in the likelihood. Assuming a flat Λ cold dark matter (ΛCDM) model, we constrained Ωm, σ8, S8(Ωm/0.3)0.5, and the parameters of the mass-richness scaling relation. Results: We obtained Ωm = 0.240.04+0.03, σ8 = 0.860.07+0.07, and S8 = 0.780.04+0.04. The constraint on S8 is consistent within 1σ with the results from WMAP and Planck. Furthermore, we got constraints on the cluster mass scaling relation in agreement with those obtained from a previous weak lensing only analysis.
KW - Cosmological parameters
KW - Cosmology: observations
KW - Large-scale structure of Universe
UR - http://www.scopus.com/inward/record.url?scp=85127296717&partnerID=8YFLogxK
U2 - 10.1051/0004-6361/202040194
DO - 10.1051/0004-6361/202040194
M3 - Article
AN - SCOPUS:85127296717
SN - 0004-6361
VL - 659
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A88
ER -