The hidden symbiotic star SU Lyn - detection of flickering in U band
Abstract
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.
We 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.- Publication:
-
Bulgarian Astronomical Journal
- Pub Date:
- February 2023
- DOI:
- 10.48550/arXiv.2206.10151
- arXiv:
- arXiv:2206.10151
- Bibcode:
- 2023BlgAJ..38...83Z
- Keywords:
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- stars: binaries: symbiotic;
- accretion;
- accretion discs;
- white dwarf;
- stars: individual: SU Lyn;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 8 pages, to appear in Bulgarian Astron. Journal