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arXiv · 2103.06625

The symbiotic binary ZZ CMi: intranight variability and suggested outbursting nature

R. K. Zamanov·K. A. Stoyanov·A. Kostov·A. Kurtenkov·G. Nikolov·G. Latev·M. F. Bode·J. Marti·P. L. Luque-Escamilla·N. Tomov·Y. M. Nikolov·S. S. Boeva
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Abstract

We present photometric and spectral observations of the symbiotic star ZZ CMi. We detect intranight variability - flickering and smooth variations in U band. The amplitude of the flickering is about 0.10-0.20 mag in U band. In the B band the variability is lower, with amplitude less than 0.03 mag. We also detect variability in the H-alpha and H-beta emission lines, and find an indication for outflow with velocity of about 120-150 km/s. The results indicate that ZZ CMi is an accretion powered symbiotic containing an M4-M6 III cool component with an white dwarf resembling recurrent novae and jet-ejecting symbiotic stars. [The data are available on www.astro.bas.bg/~rz/ZZCMi/ZZCMi.tar.gz]

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R. K. Zamanov, K. A. Stoyanov, A. Kostov, A. Kurtenkov, G. Nikolov, G. Latev, M. F. Bode, J. Marti, P. L. Luque-Escamilla, N. Tomov, Y. M. Nikolov, S. S. Boeva. 2021-10-01. The symbiotic binary ZZ CMi: intranight variability and suggested outbursting nature. https://doi.org/10.1002/asna.202113975

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