2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96057We construct self-consistent light and mass distribution models for 4 distant spiral galaxies. The models include a bulge, a disk and an isothermal dark matter. We find the luminosity profiles to have much steeper cut-off than that of a simple exponential disk. We apply k-corrections and derive rest-frame B-band mass-to-light ratios of the visible components and the central densities of the dark halos; we discover no significant evolution with redshift of these parameters.3 pages, 3 figures. Presented at the "Baryons in Dark Matter Halos" conference in Croatia, to appear in the conference proceedingsAstrophysicstext