tokens: This work was supported by grant GO6-17005X from the Smithsonian Astrophysical Observatory, based on observations from the Chandra X-ray Observatory, collected and processed at the Chandra X-ray Center, operated by SAO under contract to NASA; and grants GO-14349 ( α Per) and GO-12278 (Advanced Spectral Library [ASTRAL]: Cool Stars) from the Space Telescope Science Institute, based on observations from Hubble Space Telescope collected at STScI, operated by the Associated Universities for Research in Astronomy, also under contract to NASA. Ground-based observations were obtained with the Apache Point Observatory 3.5 m telescope, operated by the Astrophysical Research Corporation. Dr. Carol Grady guided the APO/GIFS imaging, and generously contributed time for the project out of her engineering allocation. This study also made use of public databases hosted by SIMBAD, maintained by CDS, Strasbourg, France; the Mikulski Archive for Space Telescopes at STScI in Baltimore, Maryland; and the High Energy Astrophysics Science and Research Center at the NASA Goddard Space Flight Center, in Greenbelt, Maryland. Additionally, this work has made use of data from the European Space Agency (ESA) mission Gaia ( http://www.cosmos.esa.int/gaia ), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium ). Funding for the DPAC has been provided by national institutions, in particular those participating in the Gaia Multilateral Agreement.
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