NED and SIMBAD in nearby galaxies

Data files produced to compare contents of the NED and SIMBAD databases in the vicinity of nearby galaxies. ned_simbad_pos_offset.csv: comparison of NED and SIMBAD positions for galaxies searched by name gdm_output.csv: main output containing the category matches for each galaxy CS?_NEDQuery.csv: NED listing of individual objects within galaxy for case studies. CS?_SIMBADQuery.csv: SIMBAD listing of individual objects within galaxy for case studies. CS1_UGCA086.csv: match details for individual objects in UGCA086 CS2_NGC2903.csv: match details for individual objects in NGC2903 Files with _5as.csv represent queries to later versions of NED and SIMBAD (as of June 2022), and match results with a 5 arcsec tolerance instead of 1 arcsec.