Abstract
ABSTRACT The manifestations of magnetic activity in low mass stars, particularly M dwarfs, can be used as a tool to study their evolution, the operation of the interior dynamo with changing interior conditions, and the structure of their outer atmospheres. Extensive background material on the current understanding of low mass stellar activity is presented. Two new surveys are described which will greatly increase the number of active low mass stars known in the field and in nearby open clusters. These surveys will define the characteristics of the activity on low mass stars, and how the activity changes with a number of parameters of interest, including mass, effective temperature, and age. The data will also allow a rigorous determination of a possible age-activity relation among the low mass M dwarfs. Theoretical models of M dwarf atmospheres, and their connection to the understanding of the observations, are also discussed.
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