The 1979 outburst of U Scorpii

Details The 1979 outburst of U Scorpii The 1979 outburst of U Scorpii

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.195...61b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 195, Apr. 1981, p. 61-78.

Astronomy and Astrophysics

Astronomy

62

Novae, Stellar Radiation, Stellar Spectrophotometry, Balmer Series, Light Curve, Ultraviolet Spectra, Visible Spectrum

Scientific paper

Optical and ultraviolet observations are presented of the 1979 outburst of the recurrent nova U Sco. For the first time the evolution through outburst is documented photometrically and spectroscopically. Lines of the following ions are identified: H I, He II, C IV, N III, N IV, N V, O IV, O VI and Si IV. No forbidden lines were observed. Mg I was seen in absorption at a late stage in the decline. The Balmer lines have broad and narrow components which change with time. There is evidence that nitrogen is overabundant with respect to carbon and the helium to hydrogen number ratio is about 2.

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