Photometric and kinematic studies of open star clusters II. NGC 1960 (M 36) and NGC 2194

We present CCD photometry and proper motion studies of the two open star cl usters NGC 1960 (M 36) and NGC2194. Fitting isochrones to the colour magnit ude diagrams, for NGC 1960 we found an age of t = 16 Myr and a distance of roughly d = 1300 pc and for NGC 2194 t = 550 Myr and d = 2900 pc, respectiv ely. We combined membership determination by proper motions and statistical field star subtraction to derive the initial mass function of the clusters and found slopes of Gamma = -1.23 +/- 0.17 for NGC 1960 and Gamma = -1.33 +/- 0.29 for NGC 2194. Compared to other IMF stud ies of the intermediate m ass range, these values indicate shallow mass functions.