Multicolour Observations of the Flickering of V425 Cassiopeia

Details Multicolour Observations of the Flickering of V425 Cassiopeia Multicolour Observations of the Flickering of V425 Cassiopeia

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010pobeo..90..183t&link_type=abstract

Publications of the Astronomical Observatory of Belgrade, vol. 90, pp. 183-186

Astronomy and Astrophysics

Astronomy

Scientific paper

We report our investigation of the flickering variability of the cataclysmic variable V425 Cas on the basis of observations in 5 bands (UBVR_cI_c). We find for the flickering source a temperature T_{fl} ≈ 12000 K, and a radius r ˜ 0.05 -0.10 R_&sun; . We analyze the flickering amplitude (Δ F) and search for a relation with the mean flux (F_{av}). Using all five bands, we find that Δ F ∝ F_{av}^k, where k=1.22 ± 0.12. The value is more similar to that of the symbiotic stars CH Cyg and T CrB, than to that of the cataclysmic varaibale KR Aur.

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