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

Zamanov R. Kostov A. Moyseev M. Petrov N. Nikolov Y.M. Latev G.Y. Marchev D. Boeva S. Stoyanov K.A. Minev M.S. Minev M.S. Minev M.S. Marti J. Marti J. Radeva V.S. Sánchez-Ayaso, E. Bode M.F. Bode M.F. Ilkiewicz K. Nikolov G. Luque-Escamilla P.L. Spassov B. Borisov B. Marchev V.D. Kurtenkov A.
Bulgarian Astronomical Journal
Volumen 38
2023-01-01
Citas: 0
Abstract
© 2023, Institute of Astronomy and Rozhen NAO. All rights reserved.We report photometric observations of the hidden symbiotic star SU Lyn in the optical bands. In four 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 a low accretion rate ?e also searched for intranight variability of a dozen related objects-RR Boo, RT Boo, AM Cyg, AG Peg, BF Cyg, NQ Gem, StHa190, V627 Cas, XX Oph, FS Cet and Y Gem-however no variability above the observational errors is detected.
accretion, accretion discs, stars: binaries: symbiotic, stars: individual: SU Lyn, white dwarf
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