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Optical Imaging of Old Nova Shells

Published online by Cambridge University Press:  12 April 2016

T. J. O’Brien  and
A. J. Slavin
T. J. O’Brien
Affiliation:
Astrophysics Group, Liverpool John Moores University, Byrom St, Liverpool L3 3AF, UK
A. J. Slavin
Affiliation:
Astrophysics Group, Liverpool John Moores University, Byrom St, Liverpool L3 3AF, UK

Abstract

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A deep, predominantly Ha, imaging survey of 37 classical nova remnants has just been completed using the William Herschel and Anglo-Australian Telescopes. This has resulted in the detection of new nebular remnants and the resolution of detailed structure in previously known remnants. These data indicate a correlation between nova speed class and the ellipticity of the resulting remnants – those of faster novae tend to comprise randomly distributed clumps of ejecta superposed on spherically symmetric diffuse material, whilst slower novae produce more structured ellipsoidal remnants with at least one, and sometimes several, rings of enhanced emission.

Type
Novae & Symbiotic Stars
Information
International Astronomical Union Colloquium , Volume 158: Cataclysmic Variables and Related Objects , 1996 , pp. 309 - 312
Copyright
Copyright © Kluwer 1996

References

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Wade, R.A., 1989, in “Physics of Classical Novae”, Proc. IAU Coll. 122, eds. Cassatella, A., Viotti, R., p. 179, Springer-Verlag, Berlin Google Scholar
Slavin, A.J., O’Brien, T.J., Dunlop, J.S., 1995, MNRAS, 276, 353 Google Scholar