Structure of visible and dark matter components of spiral galaxies at z   = 0.9
  We 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. 
Antti Tamm (1), Peeter Tenjes (1,2) ((1) Tartu University, (2) Tartu   Observatory)