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| 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. |
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