ner_tags: O O O O B-Observatory I-Observatory O O O O O O O O O B-Person I-Person O B-Person I-Person O O O O O B-Wavelength I-Wavelength O O O B-CelestialObject I-CelestialObject O O O O O O O O O O B-Grant I-Grant O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O O O O B-Grant I-Grant I-Grant I-Grant O O O O O O O O B-Organization I-Organization I-Organization B-Organization O B-Mission O B-URL O O O O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization B-Organization B-URL O O O O B-Organization O O O O O O O O O O O O O B-Collaboration I-Collaboration I-Collaboration O O O O O O O O B-Database O O O O B-Organization B-Location I-Location
tokens: ACKNOWLEDGEMENTS We thank the MDM Observatory staff for their assistance and rapid instrument re-configuration, and Ronald Downes and Debra Wallace for help in constructing an H α survey of the Cygnus Loop. This research was made possible in part by funds from NASA’s SpaceGrant, the Guarini School of Graduate and Advanced Studies at Dartmouth, and is part of RAF’s Archangel Research Program. We have 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. This research has also made use of the SIMBAD data base, operated at CDS, Strasbourg, France.