P. van Dokkum, R. Abraham, A. Merritt, J. Zhang, M. Geha, and C. Conroy. (2014)cite arxiv:1410.8141Comment: Submitted to ApJ Letters. To illustrate how big and fluffy these things are we made a graphic comparing the one with ACS imaging (Fig 4) to several well-known galaxies, if they were at the same distance: http://www.astro.yale.edu/dokkum/coma_udgs/sizes.jpg.