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arXiv · 2206.10151

The hidden symbiotic star SU Lyn -- detection of flickering in U band

R. K. Zamanov·A. Kostov·M. Moyseev·N. Petrov·Y. M. Nikolov·G. Y. Latev·D. Marchev·S. Boeva·K. A. Stoyanov·M. S. Minev·J. Marti·V. Radeva·E. Sanchez-Ayaso·M. F. Bode·K. Ilkiewicz·G. Nikolov·P. L. Luque-Escamilla·B. Spassov·B. Borisov·V. D. Marchev·A. Kurtenkov
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Abstract

We report photometric observations of the hidden symbiotic star SU Lyn in the optical bands. In five nights we detect a weak flickering in U band with amplitude of about 0.05 magnitudes. No intranight variations are found in B, V, g' and r' bands. This is one more indication that the secondary component is a white dwarf accreting at low accretion rate. We also searched for intranight variability of a dozen related object (RR Boo, RT Boo, AM Cyg, AG Peg, BF Cyg, NQ Gem, StHa190, V627 Cas, XX Oph, FS Cet and Y Gem) in which no variability above the observational errors is detected.

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R. K. Zamanov, A. Kostov, M. Moyseev, N. Petrov, Y. M. Nikolov, G. Y. Latev, D. Marchev, S. Boeva, K. A. Stoyanov, M. S. Minev, J. Marti, V. Radeva, E. Sanchez-Ayaso, M. F. Bode, K. Ilkiewicz, G. Nikolov, P. L. Luque-Escamilla, B. Spassov, B. Borisov, V. D. Marchev, A. Kurtenkov. 2022-06-21. The hidden symbiotic star SU Lyn -- detection of flickering in U band. https://arxiv.org/abs/2206.10151

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