Abstract
view Abstract Citations (41) References (47) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Kinematic detection of supernova remnants in giant HII regions. Chu, You-Hua ; Kennicutt, Robert C., Jr. Abstract In a kinematic survey of giant H II regions in M 101, four sources that have large velocity widths at low intensity levels are detected. Two of these large-velocity-width sources (LVWSs) are, within the limit of resolution, coincident with nonthermal radio sources several times as luminous as Cas A. The LVWS in NGC 5471 B is so bright that it is possible to separate its broad profile from the narrower profile of the background H II region. H-alpha CCD photometry, optical spectroscopy, and high-resolution radio data are combined to derive its physical properties, which support Skillman's (1985) identification of the object as a supernova remnant. The other LVWSs might be supernova remnants embedded in giant H II regions, unusually massive wind-driven shells, or the combination of both. Publication: The Astrophysical Journal Pub Date: December 1986 DOI: 10.1086/164755 Bibcode: 1986ApJ...311...85C Keywords: H Ii Regions; Spiral Galaxies; Supernova Remnants; H Alpha Line; Kinematics; Kinetic Energy; Nonthermal Radiation; Optical Emission Spectroscopy; Radio Spectra; Spectral Line Width; Astrophysics; ASTEROIDS; COLOR; COMETARY ATMOSPHERES; COMETS; HALLEY'S COMET; ASTRONOMICAL PHOTOMETRY; ATMOSPHERIC REFRACTION; CONTINUUMS; SPACE OBSERVATIONS (FROM EARTH) full text sources ADS | data products SIMBAD (8) NED (5)
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