Abstract
We present a sample of barred galaxies for which we have obtained near infrared and optical photometry and BIMA interferometer observations of CO emission. The combination of infrared and optical data increases the range of sensitivity to dust column density. We obtain the dust extinction and relative scale height of the dust and stars using a radiative transfer model to interpret the photometry. The morphology of the dust extinction regions closely resembles the distribution of CO emission, although there is some evidence that the ratio of CO brightness to dust extinction is higher in the nuclear regions. An analysis of a larger sample of galaxies with IR data indicates that dust column densities appear larger in the nuclear regions than in the bar dust lanes.
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