Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.267..465v&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 267, NO. 3/APR1, P. 465, 1994
Astronomy and Astrophysics
Astronomy
14
Binaries: Eclipsing - Stars: Individual: Yz Cnc - Stars: Individual: Su Uma - Novae, Cataclysmic Variables
Scientific paper
A 60-night campaign on SU UMa, YZ Cnc and some secondary targets was carried out during 1988 December and 1989 January at the Observatorio del Roque de Los Muchachos (the 1988 International Time Project). The aim was to study the behaviour of these dwarf novae through their outburst cycle. Here we present the overall light curves of the main targets, SU UMa and YZ Cnc, which show that the optical fluxes continue to decrease after the end of the outburst.
For YZ Cnc we find that, during quiescence, orbital variability is present, which may be interpreted as modulation caused by the bright-spot region. Near the end of an outburst, a weak, sinusoidal variation is observed; we discuss the possibility that this arises either from the secondary star or the accretion disc.
Arevalo Maria Jesus
Baruch John E. F.
Callanan Paul J.
Casares Jorge
Charles Phil A.
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