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The 1987 Outburst of the Recurrent Nova U SCO

Published online by Cambridge University Press:  12 April 2016

K. Sekiguchi ,
M.W. Feast ,
P.A. Whitelock ,
M.D. Overbeek ,
W. Wargau  and
J. Spencer Jones
K. Sekiguchi
Affiliation:
S.A. Astronomical Observatory, P.O. Box 9, Observatory 7935, S.A.
M.W. Feast
Affiliation:
S.A. Astronomical Observatory, P.O. Box 9, Observatory 7935, S.A.
P.A. Whitelock
Affiliation:
S.A. Astronomical Observatory, P.O. Box 9, Observatory 7935, S.A.
M.D. Overbeek
Affiliation:
Box 212, Edenvale 1610, Transvaal, South Africa
W. Wargau
Affiliation:
University of South Africa, P.O. Box 392, Pretoria 0001, S.A
J. Spencer Jones
Affiliation:
S.A. Astronomical Observatory, P.O. Box 9, Observatory 7935, S.A.

Abstract

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Spectral observations obtained soon after the 1987 brightening of U Sco support a thermonuclear runaway model for outbursts of this object. Spectra later in the decline are, however, more characteristic of a hot accretion disc. These observations are reconciled in a model where the low-mass high-velocity shell ejected from the surface of the white dwarf collides with the accretion disc causing it to brighten.

Information

Type
Session 5. Symbiotic Phenomena and Stellar Evolution. Conclusions.
Information
International Astronomical Union Colloquium , Volume 103: The Symbiotic Phenomenon , 1988 , pp. 337 - 338
Copyright
Copyright © Kluwer 1988

References

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