MASTER OT J190519.41+301524.4: New Eclipsing Cataclysmic Variable of VY Scl Type

TL;DR

This paper reports the discovery and photometric analysis of a new VY Scl type eclipsing cataclysmic variable, providing its orbital period, eclipse characteristics, and inclination estimate.

Contribution

It presents the identification and detailed photometric characterization of a new VY Scl type cataclysmic variable, including its orbital period and eclipse features.

Findings

Deep V-shaped eclipses with two-magnitude amplitude

Orbital period of approximately 3.11 hours

Likely high inclination angle close to 90 degrees

Abstract

MASTER OT J190519.41+301524.4 was discovered as an optical transient of 15.7m by the Mobile Astronomical System of TElescope-Robots in March 2014. We report the results of photometric observations of this variable performed at Lajatico Astronomical Center in June-July 2015. The light curve is showing deep V-shaped eclipses with an amplitude of two magnitudes. The orbital period was determined to be 0.129694 d (3.113 h). Based on the archival observations and the shape of the orbital curve we suggest that MASTER OT J190519.41+301524.4 is a new cataclysmic variable of VY Scl type ("anti-nova") with an inclination angle close to 90 deg.