The Relationship Between Near IR Extinction and CO Emission
The relationship between dust optical depth and integrated CO emission is explored for a sample of four galaxies. The dust optical depth is determined by using a radiative transfer model to match the observed optical and infrared colors at different positions in each galaxy. With assumptions of dense dust fractions and a constant dust to gas ratio, the comparision of the ratio of dust optical depth to integrated CO emission can be used to look at the variation in X, the conversion factor between integrated CO emission and H2 mass.
KeywordsStar Formation Radiative Transfer Model External Galaxy Dust Lane Infrared Color
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