Back to Volume
Paper: Effective characteristics of variability of the symbiotic star CH Cygni
Volume: 292, Interplay of Periodic, Cyclic and Stochastic Variability in Selected Areas of the H-R Diagram
Page: 211
Authors: Andronov, I. L.; Chinarova, L. L.
Abstract: The symbiotic star CH Cygni has been analyzed based on 30,240 photometric observations (1925-2002) published by AFOEV and VSOLJ. The periodogram, scalegram and wavelet algorithms have been applied, as well as a proposed modification of the ``running parabola'' scalegram. The photometric ephemeris for the brightness minima is JD 2447340 (2)+747.3(3)E. The effective semi-amplitude of these variations is 0.171(3) mag. The characteristics of the variations at other time scales of 100 and 2000 days have been obtained using different methods.
Back to Volume