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Is the Outburst of U Scorpii an Accretion Event?

Published online by Cambridge University Press:  12 April 2016

R.F. Webbink
R.F. Webbink*
Affiliation:
Department of Astronomy, University of Illinois

Extract

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A summary of the peculiarities of the spectral evolution of the recurrent nova T Cr B are given, and interpreted in terms of an episodic accretion model. On the basis of the marked similarity of U Sco with this nova, it is suggested that the observed maximum will be followed by a secondary maximum, reaching V = 14-15. Such a secondary maximum should be very different for an accretion event (showing a strong continuum) and a thermonuclear outburst (showing a nebular spectrum). If observations of a star at 14th magnitude at the position of U Sco in February 1969 were indeed of a secondary maximum of this nova, the principal maximum probably precedes the secondary by less than 65 days.

Type
Abstracts of Workshop Papers on Novae
Information
International Astronomical Union Colloquium , Volume 53: White Dwarfs and Variable Degenerate Stars , August 1979 , pp. 534
Copyright
Copyright © The University of Rochester 1979