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We present the first results of an ongoing spectroscopic survey of galaxies selected in the rest-frame ultraviolet (UV). The redshift distribution extends over 0<z<0.5 and a high fraction of the sources show intense nebular emission lines and UV-optical colours bluer than normal Hubble sequence galaxies. Although our sample is currently small, we derive a rest-frame UV luminosity function with a steep faint end slope consistent with that found for late-type galaxies in optical samples. However, the integrated luminosity density derived implies a volume-averaged star formation rate higher than other recent estimates, assuming a normal initial mass function. If representative of other UV fields, our data implies the local abundance of star-forming galaxies may have been underestimated and consequently claims for strong evolution in the global star formation rate in the range 0<z<1 overstated.
Treyer et al. (Sun,) studied this question.