Quantitative morphological analysis of the Hubble Deep Field North and Hubble Deep Field South -: I.: Early- and late-type luminosity-size relations of galaxies out to z ∼ 1

Based on drizzled F606W and F814W images, we present quantitative structural parameters in the V-band rest-frame for all galaxies with z < 1 and I-814(AB) < 24.5 mag in the Hubble Deep Fields North and South. Our structural parameters are based on a two-component surface brightness distribution using a Sersic bulge and an exponential disc. Detailed simulations and comparisons with previous work are presented. The luminosity-size distribution of early-type galaxies is consistent with the hypothesis that their structural properties were already in place by z similar to 1 and have evolved passively since then; early-type galaxies were similar to1.35(+/- 0.1) mag brighter in rest-frame V-band luminosity at z similar to 0.7 than now. Compared with present-day late-type galaxies, those at z similar to 0.7 with L-V > 0.2 x 10(10) h(-2) L-. show a moderate decrease [similar to30(+/- 10) per cent] in size [or interpreted differently, a decrease of similar to0.77(+/- 0.30) mag in the central surface brightness] at a given luminosity. Finally, we make a comparison of our results with the infall and hierarchical models.