The Astrophysical Journal Supplement Series · 1959 · 561 citations · 0 references
Natural SciencesAstronomyPhysicsAstrophysicsGalactic AstronomyStellar AstronomyH Ii RegionsInterstellar GasStar CatalogsStellar ClassificationStellar StructureH Ii Region Emission LinesMorphology Of H Ii Regions
A catalogue is given of 313 H ii regions north of declination 270. Known early-type stars associated with them are listed. The apparent distribution of H ii regions is discussed, and the galactic pole with respect to ionized hydrogen is determined.