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Multicolour photometry of MWC560 for the last observation season

ATel #16566; Marchev, D., Marchev, V., Borisov, B., Popov, V., Atanasova, T., Yordanova, G.
on 2 Apr 2024; 11:52 UT
Credential Certification: Vladislav Marchev (vlad.marchev@gmail.com)

Subjects: Optical, Cataclysmic Variable, Variables

The observations were conducted with two different telescopes of the Astronomical Center at Shumen, Bulgaria- 40cm Schmidt-Cassegrain (Kjurkchieva, D., et all. 2020) and the new 60cm Ritchey-Chretien telescopes. The observational period stars from October 2023 until March 2024 where the filters used were Sloan g' and i' and Johnson BVRI. The runs lasted between 1.5 and 2.5 hours each night and we used the standards used by Munari (Henden, A. and Munari, U., 2001A&A, 372, 145). The results are visible in the attached table as well as the light curve for the last observational night on the 30.03.2024. Looking at the light curve we see lack of flickering. We can also conclude that the star is in overall high state with very small fluctuations of the brightness and a tendency of slight increase. This is most likely due to a slowly expanding in size common shell surrounding the system.

Table + Light Curve