Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...312...97b&link_type=abstract
Astronomy and Astrophysics, v.312, p.97-104
Astronomy and Astrophysics
Astrophysics
17
Stars: Binaries: Close, Stars: Binaries: Eclipsing, Stars: Novae, Cataclysmic Variables, Stars: Individual: Z Cha
Scientific paper
The location of the flickering light source in the dwarf nova Z Cha in different photometric states is investigated by studying the rms-scatter in the light curves as a function of phase. The applied method is outlined in some detail, and possible systematic effects are discussed. It is found that the main part of the flickering is confined to a narrow range in the immediate vicinity of the white dwarf in Z Cha. However, depending on the photometric state other sources may contribute to the flickering. In particular, in quiescence the hot spot appears to contribute non-negligibly to the flickering.
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