A Comparison of the Infrared and Ultraviolet Properties of Photodissociation Regions

Computer Science

Scientific paper

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Scientific paper

We propose to compare Spitzer observations of molecular hydrogen, PAHs, and thermal dust emission with recent studies of molecular hydrogen and interstellar dust at ultraviolet wavelengths. We will use archival observations of six photodissociation regions to examine the environmental dependences of PAH emission. This will be accomplished by looking for correlations between PAHs and fluorescent molecular hydrogen, relative to the strength of the ultraviolet radiation field and the nebular geometry. This investigation would provide a multi-wavelength observational base for future studies of molecular hydrogen and dust grains in PDRs.

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