INFRARED FABRY-PEROT IMAGING OF M82 [FE-II] EMISSION .2. TRACING EXTRAGALACTIC SUPERNOVA-REMNANTS

We report high spatial and spectral resolution [Fe II] 1.644 mu m Fabr y-Perot imaging observations of M82. We present extinction-corrected [ Fe II] images and discuss the nature of compact [Fe II] emission regio ns revealed by these new data. We conclude that these [Fe II] sources trace a population of supernova remnants in M82 that are substantially older than those revealed previously on 6 cm radiographs. In addition , we find that M82 contains a distributed [Fe II] emission component t hat is extended along the southern minor axis and that accounts for 90 % of the galaxy's [Fe II] luminosity. We interpret this extended emiss ion as tracing disk material entrained in a super wind that has broken out of the galactic disk to the south. We find that the [Fe II]/Bry l ine ratio throughout M82 correlates with the age of the starburst as r eflected by the color of the photospheric emission from the galaxy's s tars. This correlation suggests that the [Fe II] emission regions in M 82 are colocated with a post-main-sequence stellar population. The eng ineering details of our Fabry-Perot imaging methodology are also discu ssed.