Abstract
view Abstract Citations (43) References (34) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Detection of H II regions and ionized interarm gas in the Sombrero Galaxy (NGC 4594). Schweizer, F. Abstract Spectroscopic observations of NGC 4594 unambiguously show the presence of H II regions and ionized interarm gas in that galaxy. The brightest H II regions appear to be excited by early O-type stars, giving evidence for the formation of high-mass stars. Ionized gas of low density pervades the visible disk of the galaxy and apparently corotates with the stars. The unusually high rotational velocities reveal a very massive galaxy. When combined with available photometric data, these velocities also indicate a large radial increase of the mass-to-light ratio similar to that observed in M31. Publication: The Astrophysical Journal Pub Date: February 1978 DOI: 10.1086/155884 Bibcode: 1978ApJ...220...98S Keywords: Galactic Structure; H Ii Regions; H Lines; Interstellar Gas; Ionized Gases; Spiral Galaxies; Early Stars; Nebulae; Radial Velocity; Spectroscopy; Stellar Evolution; Astrophysics; Galaxies:H II Regions full text sources ADS | data products SIMBAD (2) NED (1)
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