Abstract
Hα images of the H II regions of five members of the M81 Group - Ho I, Ho IX, M8IdA, M81dB, and IC 2574 have allowed us to calculate their present star formation rates. The H II regions of the galaxies are normal in both their luminosity functions, which are power laws with shallow slopes (~-1.4), and in their size distributions, which fit exponentials (D_0_ ~ 50 pc). However, we find that there is a wide range of star formation activity as measured by the star formation and gas depletion timescales. Present star formation activity ranges from essentially zero for M81dA, which has no detected H II regions, to more active galaxies, such as IC 2574. M81dB appears to be in a burst phase.
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