Using Chandra Localizations and Gaia Distances and Proper Motions to Classify Hard X-Ray Sources Discovered by INTEGRAL

Here we report on X-ray observations of ten 17-60 keV sources discovered by the INTEGRAL satellite. The primary new information is sub-arcsecond positions obtained Chandra Observatory. In six cases (IGR J17040-4305, IGR J18017-3542, J18112-2641, J18434-0508, J19504+3318, and J20084+3221), a unique counterpart identified with high degree certainty, for five these (all but J19504), Gaia distances or proper motions indicate that they are Galactic sources. For four these, most likely classifications magnetic Cataclysmic Variables (CVs). J20084 could be either CV High Mass Binary. We classify sixth source (J19504) as Active Nucleus (AGN). addition, find counterparts to J18010-3045 J19577+3339, latter bright radio probable AGN. other two sources, J12529-6351 J18013-3222 do not have counterparts, indicating transient, highly variable, absorbed.