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tokens: We would like to thank the anonymous referee whose comments helped to significantly improve the paper. This work is based on observations made with the NASA/ESA Hubble Space Telescope , obtained from the Data Archive at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with program 15074. Support for Program number 15074 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, Incorporated, under NASA contract NAS 5-26555. The scientific results reported in this article are based in part on data obtained from the Chandra Data Archive. This work has made use of data from the European Space Agency (ESA) mission Gaia ( https://www.cosmos.esa.int/gaia ), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium ). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The work of DS was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. Facilities: HST (WFPC2 and WFC3) , Chandra (ACIS) , Gaia . Software: astropy (Astropy Collaboration et al. 2013 ), DOLPHOT (Dolphin 2000 ), MESA (Paxton et al. 2011 , 2013 , 2015 ), CIAO (Fruscione et al. 2006 ).