Key points are not available for this paper at this time.
Evolutionary models are discussed with respect to the interpretation of faint galaxy counts. The K-corrections are reviewed with available UV data, and the necessary assumptions and model input parameters. In particular the possibility that the bulges of spiral galaxies have evolved in a form similar to that expected for elliptical galaxies is explored. The inclusion of bulge evolution predicts significantly more galaxies and may be consistent with the steepening count-magnitude slope at faint magnitudes. A significant fraction of Bj = 23 galaxies could be luminous compact objects with redshifts greater than 1 seen during their epoch of rapid star formation.
King et al. (1985) studied this question.