Investigation of Dwarf Novae Discovered by the MASTER Robotic Network on the Basis of TESS and Ground-Based Wide-Field Survey Data

The MASTER robotic telescope net has discovered hundreds of dwarf novae and other cataclysmic variables. We have studied six of these objects using data from the TESS space mission and ground-based survey telescopes. For four objects, the classification as SU UMa dwarf novae was confirmed. Two unusual objects were also discovered: MASTER OTJ085337.83604501.0 exhibits superflares without superhumps, being a possible analogue of CG Dra in the “period gap,” and MASTER OTJ173618.08+752123, which appears to be an ultracompact AM CVn system.