Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss..99...85d&link_type=abstract
(International Astronomical Union, Colloquium on Double Stars, Physical Properties and Generic Relations, 80th, Bandung, Indones
Astronomy and Astrophysics
Astronomy
3
Novae, Stellar Spectra, Ultraviolet Astronomy, Abundance, Iue, Line Spectra
Scientific paper
UV spectra of the recent classical novae N Sgr 1982, N Ser 1983, and N Mus 1983 obtained with the IUE during the period October, 1982-March, 1983, corresponding to their early-decline, transitional, and nebular phases, respectively, are presented and analyzed. N Sgr 1982 is found to be a typical fast classical nova, and N Ser 1983 is characterized as a very fast nova having an asymmetric optically thin 10,000-km/sec wind with a large temperature gradient. It is proposed that a double-peak Mg II (280 nm) feature and high-ionization (C IV, N IV, Si IV) features formed in spatially separated parts of the wind. N Mus 1983 is classified as moderately fast by its spectral features but as slow photometrically; very strong N lines and moderately strong O and C lines indicate the importance of the CNO process in the thermonuclear runaway.
Drechsel Horst
Rahe Juergen
Wargau Walter W.
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