Photometric and Polarimetric Observations of a New Polar USNO-A2.0 0825-18396733

TL;DR

This study reports photometric and polarimetric observations of a newly identified magnetic cataclysmic variable, confirming its classification as a polar through variable polarization and brightness measurements.

Contribution

The paper provides the first detailed photometric and polarimetric data of USNO-A2.0 0825-18396733, establishing it as a new polar with specific orbital and polarization characteristics.

Findings

Orbital period of approximately 0.08481 days.

Brightness varies from magnitude 17.5 to 20.0 in Rc filter.

Strong variable circular polarization from -2% to -31%.

Abstract

We present photometric and polarimetric observations of a new magnetic cataclysmic variable, presumably a polar, USNO-A2.0 0825-18396733. The photometric observations were carried out with the SAO RAS Zeiss-1000 telescope, and the polarimetry was performed with the 6-m BTA telescope. The redefined orbital period P = 0:d08481(2); the brightness of the system varied from 17:5 to 20:0 in the Rc filter. Polarimetric observations of the object in the V filter revealed strong variable circular polarization: -2% to over -31%. This indicates that the variable USNO-A2.0 0825-18396733 is a polar.