tokens: Support for this work was provided by the National Aeronautics and Space Administration through Chandra Award Number G04-15114X to S.M. issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. Support for the HST program number GO-13185 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. K.D.D. was supported by an NSF AAPF fellowship awarded under NSF grant AST-1302093 while she worked on this project. M.V. gratefully acknowledges support from the Danish Council for Independent Research via grant number DFF 4002-00275.
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