M17 and Taurus A:3.4-MILLIMETER Contour Maps and Integrated Fluxes

Abstract

Contour maps at 3.4 mm of Mt7 (the Omega Nebula) and Tau A (the Crab Nebula) yield total integrated fluxes of 300 (+50, -40) and 215 (+44, -34) X 10-26 W m ' Hz-1, respectively. These results are in agreement with the values predicted by extrapolating data obtained at longer wavelengths. The M17 result is consistent with a thermal origin for the radiation. The low signal-to-noise ratio results reported by others, which indicated anomalously high total fluxes for Tau A at millimeter wavelengths, are not confirmed. The 3.4-mm maps are consistent with maps made at longer wavelengths.