Abstract
view Abstract Citations (163) References (27) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Abundance inhomogeneities in the Cassiopeia A supernova remnant. Chevalier, R. A. ; Kirshner, R. P. Abstract Quantitative spectral information has been obtained for several of the fast-moving knots in Cas A. It is found that the strengths of S II, Ar III, and Ca II forbidden lines are correlated with each other and this group of lines can vary by large factors relative to lines of oxygen. Sulfur, argon, and calcium are the products of oxygen burning, so a simple interpretation of the result is that different parts of the remnant come from portions of a stellar interior that have undergone different amounts of oxygen burning. The abundance ratios are uncorrelated with the kinematic properties of the knots. Minkowski's (1957) spectra of Cas A are examined, and it is confirmed that neon is present in one of the fast knots, although the location of the knot is not known. Publication: The Astrophysical Journal Pub Date: October 1979 DOI: 10.1086/157377 Bibcode: 1979ApJ...233..154C Keywords: Abundance; Astronomical Spectroscopy; Cassiopeia A; Nebulae; Supernova Remnants; Filaments; Inhomogeneity; Line Spectra; Neon; Spectral Line Width; Stellar Interiors; Astrophysics; Nucleosynthesis:Supernova Remnants; Supernova Remnants:Element Abundances full text sources ADS | data products SIMBAD (1)
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