from photometric H imaging

Abstract. We present a new high quality continuum-subtracted H image of NGC 7479. Using a novel semi-automated technique we have determined the positions, angular sizes, and absolute fluxes of over 1000 Hii re-gions and have constructed the luminosity function for the regions over the whole galaxy, showing that its slope is within the published range for spirals of the same mor-phological type. However NGC 7479 is notable in that its bar shows unusually strong star formation along the whole structure. This prompted us to undertake separate analy-ses of the Hii regions in the bar and in the disc. The disc luminosity function (LF) shows clean bi-linear behaviour as found previously in late-type spirals, with a break at log LH = 38.6 erg s −1, whereas the bar LF shows a muc