Abstract
view Abstract Citations (89) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Spectra of Cassiopeia A. I. Observations. Kirshner, R. P. ; Chevalier, R. A. Abstract Image-tube spectrograms of the supernova remnant Cas A in the wavelength range 4700-8000 A have been reduced to give relative line intensities, for 19 fast moving knots and seven quasi-stationary flocculi. In the fast-moving knots, previously unobserved lines of (Ar III), (Ar IV), (Ar V), O I, (O I), (Ca II), and Fe II have been measured, while more stringent upper limits have been set on H alpha, H beta, lines of helium, and lines of nitrogen. In the quasi-stationary flocculi, new lines of (O III), (Fe II), (N I), (N II), He I, (S II), (Ar III), (Ca II), and (O II) have been measured. The results are consistent with earlier investigations, but are more detailed. Publication: The Astrophysical Journal Pub Date: November 1977 DOI: 10.1086/155666 Bibcode: 1977ApJ...218..142K Keywords: Astronomical Spectroscopy; Cassiopeia A; Emission Spectra; Supernova Remnants; Abundance; Line Spectra; Oxygen Spectra; Tables (Data); Astronomy full text sources ADS | data products SIMBAD (2)
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