PI: William C. Keel, University of Alabama, firstname.lastname@example.org
Address: Physics Department, Box 870324, Tuscaloosa, AL 35487, USA
CoI: Benne Holwerda, ESTEC, Noordwijk, The Netherlands
CoI: Chris Lintott, Oxford University
CoI: Kevin Schawinski, Yale University
Title: Extended dust in dwarf galaxies - solving an energy-budget paradox?
Abstract: The role of dust in shaping the emerging spectral energy distributions of galaxies remains poorly understood; recent \it Herschel results suggest large amounts of cold dust coupled with only modest optical extinction for much of the galaxy population. Previous work has used the discovery of a silhouetted-galaxy pair of a backlit dwarf galaxy with dust features extending beyond the de Vaucouleurs radius to investigate this question. We propose to examine a larger set of galaxies of this type drawn from the Galaxy Zoo catalog of silhouetted-galaxy pairs, to see whether a significant fraction of dwarfs have such extensive dust distributions. The catalog contains ~ 150 candidate backlit dwarfs; if such dust distributions are common enough to account for the \it Herschel results, we would see many additional cases of silhouetted dust beyond their stellar disks.
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