Abstract
view Abstract Citations (50) References (35) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Structure of the Cygnus A Radio Galaxy Pierce, M. J. ; Stockton, A. Abstract Interference-filtered CCD optical images were obtained of Cygnus A at a wavelength of 6100 A using a FWHM 100 A bandpass and at 6495 A with a FWHM of 170 A. The data yielded a radial surface brightness profile of the region, emission line and absorption spectra, velocity field, and ratios of H-alpha flux/continuum flux near H-beta. The analytic procedures applied to the data are described. Interactions among stars, dust, emitting gas and a featureless continuum were in evidence. The continuum and emission-line radiation exhibited different distributions, with the latter displaying clumped and filamentary features. The featureless continuum radiation arose from an extended region; the generating source was not resolved. Publication: The Astrophysical Journal Pub Date: June 1986 DOI: 10.1086/164240 Bibcode: 1986ApJ...305..204P Keywords: Astronomical Spectroscopy; Galactic Structure; Radio Galaxies; Continuous Spectra; Emission Spectra; Galactic Nuclei; H Alpha Line; Interstellar Extinction; Interstellar Gas; Astrophysics; GALAXIES: INDIVIDUAL NAME: CYGNUS A; GALAXIES: STRUCTURE; RADIO SOURCES: GALAXIES full text sources ADS | data products SIMBAD (1) NED (1)
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