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tokens: This work was supported by grant HST-AR-12123.001-A from the Space Telescope Science Institute. W.A.F. participated in the Research Experiences for Undergraduates (REU) Program of the National Science Foundation under award number 1262810. A. M. R. acknowledges support from the Kenilworth Fund of the New York Community Trust. The HST observations presented here were obtained from the Mikulski Archive for Space Telescopes (MAST). STSci is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555.