Towards understanding dynamo action in M dwarfs

摘要: Recent progress in observational studies of magnetic activity M dwarfs urgently requires support from ideas stellar dynamo theory. We propose a strategy to connect and theoretical studies. In particular, we suggest four configurations that appear relevant the viewpoint most conservative version theory, discuss tests identify observationally. As expected, any such identification contains substantial uncertainties. However situation general looks less pessimistic than might be expected. Several identifications between phenomenology individual stars models are suggested. Remarkably, all discussed predict surface at rather high latitudes. This prediction unexpected our experience observing Sun (which course differs some fundamental ways these late-type dwarfs). stress fuller understanding topic long-term (at least 15 years) monitoring by Zeeman-Doppler imaging.