STELLAR DYNAMO IN CONTEXT OF STELLAR ACTIVITY DATA

Abstract

Investigations in cyclic stellar activity naturally departs to some extent from solar cyclic activity studies and are expected to provide a valuable material for understanding of solar activity. Solar instrumental observations are however much more detailed rather the stellar ones and covers much longer temporal interval. This creates various problems in comparison between observational and theoretical concepts for stellar activity with that ones for solar activity. We discuss the problems to arrive to conclude that the key issue to develop solar-stellar activity comparison is organizing of long-term monitoring of cyclic activity of several more or less solar like stars.