Flare Activity on YZ Canis Minoris.

Recent photoelectric observations of YZ Canis Minoris show the are phenomena of dMe stars to be more complex than was originally realized. Deviations from the usual exponential fading from maximum brightness cannot be explained by simple radiation cooling of a heated area. Among small flares, no simple relationship seems to exist between ampiftude and duration. The commencement of small variations in the brightness of a flare star may possibly be associated with the appearance of major flares.