CQ Aurigae / CQ Aur
Light curves and phase diagrams of the EA type eclipsing binary CQ Aurigae/ CQ Aur.
The following light curve and phase diagram were constructed from photometry of 101 images taken with a V filter with the Open University COAST telescope (a 14 inch Schmidt- Cassegrain) between 2017 August 3 and 2018 January 25, and 111 images taken between 2018 August 11 and 2020 February 8. The first group of observations are coloured black, the second group are coloured red.
The light curve is changing over time, and the phase diagram is asymmetrical and 'noisy', the maximum between secondary and the primary minima showing more scatter than that between the primary and the secondary minima. The system is catalogued as an EA/GS/RS type, which have a light curve which can have unequal maxima and can also change over many cycles (the O'Connell effect, possibly due to 'starspots' on the RS CVn component, see Kang 1993.).
The period is catalogued as 10.621943d (AAVSO VSX), 10.6226d (Kreiner) and 10.62251d (GCVS). (accessed 2020 February 9).
The period is catalogued as 10.621943d (AAVSO VSX), 10.6226d (Kreiner) and 10.62251d (GCVS). (accessed 2020 February 9).
[Page updated 2020 February 9]
