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

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. W...

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Bibliographic Details
Published in:arXiv.org 2021-10
Main Authors: Zamanov, R K, Stoyanov, K A, Kostov, A, Kurtenkov, A, Nikolov, G, Latev, G, Bode, M F, Marti, J, Luque-Escamilla, P L, Tomov, N, Nikolov, Y M, Boeva, S S
Format: Article
Language:English
Subjects:
Amplitudes
Deposition
Symbiotic stars
White dwarf stars
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Summary: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]
ISSN:2331-8422
DOI:10.48550/arxiv.2103.06625