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. 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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