Showing papers by "Daniel Y. Gezari published in 1983"
01 Jan 1983
TL;DR: In this paper, a large-scale survey of the first quadrant of the galactic plane at wavelengths of 160, 260, and 300 μm is presented, interpreted as thermal radiation by dust grains, revealing an optically thin disk of angular width ∼ 0.9o (FWHM) with a mean dust temperature of 23 K and significant variation of the dust mass column density.
Abstract: Initial results are presented from a new large-scale survey of the first quadrant of the galactic plane at wavelengths of 160, 260, and 300 μm. The submillimeter wavelength emission, interpreted as thermal radiation by dust grains, reveals an optically thin disk of angular width ∼ 0.9o (FWHM) with a mean dust temperature of 23 K and significant variation of the dust mass column density. Comparison of the dust column density with the gas column density inferred from CO survey data shows a striking spatial correlation. The mean luminosity per hydrogen atom is found to be 2.5×10−30 W/H, implying a radiant energy density in the vicinity of the dust an order of magnitude larger than in the solar neighborhood. The data favor dust in molecular clouds as the dominant submillimeter radiation source.
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