  Knowledge of both the global star formation history of the universe and the
nature of individual star-forming galaxies at different look-back times is
essential to our understanding of galaxy formation and evolution. Deep redshift
surveys suggest star-formation activity increases by an order of magnitude from
z = 0 to ~1. As a direct test of whether substantial evolution in
star-formation activity has occurred, we need to measure the star formation
rate (SFR) density and the properties of the corresponding star-forming galaxy
populations at different redshifts, using similar techniques. The main goal of
this work is to extend the Universidad Complutense de Madrid (UCM) survey of
emission-line galaxies to higher redshifts. (continues)
