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Session 108 - HII Regions.
Display session, Thursday, January 18
North Banquet Hall, Convention Center

[108.10] SiO Observations Towards G5.89

J. M. Acord (UW-Madison), C. M. Walmsley (U. Cologne), E. B. Churchwell (UW-Madison)

We present the results of observations of silion monoxide towards the ultracompact HII region G5.89-0.39. Using the Pico Veleta 30-m MRT, the Effelsberg 100-m radiotelescope, and the VLA, we are able to determine the density and temperature of the outflowing molecular gas in which the SiO emission arises. By coupling our observations with previous work, we find the SiO abundance in the region is greatly enhanced. However the bulk of gas phase silicon appears to be in heretofore unseen forms.

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