Swift UV/Optical Telescope Ultraviolet Imaging of the Star Forming Regions of M81
Abstract
We present Swift UV/Optical Telescope (UVOT) imaging of
star forming regions in Messier 81 (NGC 3031). UVOT is particularly well suited for this analysis as it has a smaller PSF and more color information in the near ultraviolet than GALEX, but a larger field of view than HST so that the full disk of M81 can be imaged in one exposure. UVOT imaging in the uvw2, uvm2, and uvw1 filters is combined with imaging in the u, g, r, i, and z bands from the Sloan Digital Sky Survey to extend the SED coverage of the star forming regions. We show the colors and derived ages of individual star forming regions, UV surface brightness profiles, and pixel by pixel fits of the properties of the stellar populations in M81.- Publication:
-
American Astronomical Society Meeting Abstracts #215
- Pub Date:
- January 2010
- Bibcode:
- 2010AAS...21532605H