Multiwavelength Observations of Giant HII Regions in M33

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Session 60 -- HII Regions
Display presentation, Thursday, 9:20-4:00, Pauley Room

[60.06] Multiwavelength Observations of Giant HII Regions in M33

K.-P. Cheng (NRC/NASA), Paul Hintzen (California State University, Long Beach), Eric Smith, Theodore Stecher (LASP/GSFC/NASA)

The local group galaxy M33 were observed with the Astro-1/Ultraviolet Imaging Telescope in December 1990. The resulting calibrated UV (1200 \AA\ $\le\lambda\le$ 3000 \AA) images are 40 arcminutes in diameter at 2.5 arcseconds resolution. These wide field, high resolution images allow UV study of the giant HII regions in M33, e.g. NGC604 and NGC595. We have also obtained direct CCD mosaic images in H$\alpha$ and R to allow detailed comparison of the H$\alpha$ emission with the UV morphology. Our studies of the high-resolution far-infrared IRAS maps have revealed an excellent correspondence between the far-infrared sources and H$\alpha$ regions.

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