Sub-arcsecond Mid-infrared Imaging Of Ultra Compact HII Regions

Details Sub-arcsecond Mid-infrared Imaging Of Ultra Compact HII Regions Sub-arcsecond Mid-infrared Imaging Of Ultra Compact HII Regions

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21348508d&link_type=abstract

American Astronomical Society, AAS Meeting #213, #485.08; Bulletin of the American Astronomical Society, Vol. 41, p.456

Astronomy and Astrophysics

Astronomy

Scientific paper

We present mid-infrared imaging observations of ultra compact (UC) HII regions observed with T-ReCS on the Gemini South 8m telescope. The source list consists of all 45 sources in the 6 and 2 cm radio continuum survey of Hofner and Churchwell (1989). With T-ReCS we achieve in the mid-infrared a comparable spatial resolution ( 0.4") to the radio images from that survey. Combined with the absolute astrometric accuracies of <0.2" of the mid-infrared images, we can directly compare source structures and coincidences between the two spectral regimes. Since the radio continuum traces ionized gas and the mid-infrared mainly traces dust emission, the gas and dust distribution in these massive star-forming regions are explored.

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