PREDNASAJUCI / LECTURER :

Viktoriia Krushevska

NAZOV / TITLE :

Photometric investigations of WZ Sge-type dwarf nova ASASSN-19oc

ABSTRAKT / ABSTRACT :

I present the investigation of new dwarf nova ASASSN-19oc which superoutburst was in June 2019.
We have obtained UBVRcIc-photometry of ASASSN-19oc at the 50-cm and 60-cm telescopes of the South
station of SAI MSU from June 3 to 18, 2019 and carried out their thorough analysis.
Data processing show the presence of early superhumps in the first days of observations
as well as ordinary and late superhumps. We have calculated the period of ordinary superhumps,
the periods at other stages, and the value Pdot showing the rate of superhumps period changes.
We also found the mass ratio of the dwarf nova components, estimated the variation of color temperature,
and the distance to the system. We have confirmed that the object is classified
as dwarf nova of WZ Sge-type.