Galaxy Structural Parameters: Star Formation Rate and Evolution with Redshift

Abstract

The evolution of the structure of galaxies as a function of redshift is investigated using two parameters: the metric radius of the galaxy (R_eta) and the power at high spatial frequencies in the disk of the galaxy (chi). A direct comparison is made between nearby (z~0) and distant (0.2 ~5+/-1 kpc, and the median radius of the HDF sample is ~6+/-2 kpc for q_0=0.5, H_0=65 km s^-1 Mpc^-1 however, for q_0=0.1, ~7 kpc and for q_0=1, ~5 kpc. In the HDF, galaxies with redshifts larger than z>0.6 have flatter R_eta distributions than galaxies with redshifts smaller than z