Stellar and dark matter density in the Local Universe

We calculate the mean density profiles for luminous and dark matter on distance scales D ∼ 1-100 Mpc around us using recent all-sky catalogs of galaxy groups. Within the Local Volume (D < 11 Mpc), we derived the mean stellar density Ω_* = 0.44% in the critical density units and the mean total matter density Ω_m = 0.17. Within a sphere of radius 40 Mpc, these quantities drop to Ω_* = 0.24-0.32% and Ω_m = 0.09-0.14. In a larger volume within D ∼ 135 Mpc, the discussed densities become more uncertain: Ω_* = 0.20-0.24% and Ω_m = 0.05-0.16. We summarize that the major part of the cosmic dark matter is located outside the virial and collapsing zones of groups and clusters.