Star forming regions in disks of galaxies

Abstract

Abstract An analysis of the parameters of 71 star forming regions in nine late type spiral galaxies is presented. It is based on multicolor surface photometry data. The ages of the star forming regions are estimated using the evolutionary synthesis method. In most galaxies, the star forming regions are usually located in the resonance rings. The star forming regions belonging to a given galaxy have approximately the same age. The investigation of the distribution of star forming regions by the distance between neighbouring star forming regions shows that a special distance scale exists for ring galaxies.