Optical identification of a new cataclysmic variable from integral all sky survey: IGR J08390--4833

TL;DR

This paper reports the optical identification of a new cataclysmic variable, IGR J08390--4833, discovered through the INTEGRAL all-sky survey, characterized by its spectral features and variability.

Contribution

The study provides the first optical identification and spectral analysis of IGR J08390--4833, linking it to a cataclysmic variable from the INTEGRAL survey.

Findings

Spectral features include a blue continuum with Balmer and HeII emission lines.

Detected intrinsic variability on approximately hourly timescales.

Object's classification into a specific CV subclass remains uncertain.

Abstract

We have optically identified a recently discovered INTEGRAL source, IGR J08390--4833, with a cataclysmic variable, i.e. an accreting white dwarf in a binary system. The spectrum exhibits a rising blue continuum together with Balmer and HeII emission lines. Analysis of the light curve of the source shows clear presence of intrinsic variability on a time scale of the order of an hour, although we do not claim that this variability is periodic. Therefore we are not yet able to classify the object into a specific CV subclass.