AG Pegasi - now a classical symbiotic star in outburst?

TL;DR

This study analyzes the 2015 outburst of AG Pegasi, revealing spectral and parameter changes that suggest it transitioned from a symbiotic nova to a classical symbiotic star.

Contribution

It provides the first detailed optical spectroscopic analysis of AG Peg's outburst, highlighting similarities with classical symbiotic stars and proposing a transition in its classification.

Findings

Spectral features varied significantly during the outburst.

Hot component parameters changed notably due to the outburst.

AG Peg may have transitioned from a symbiotic nova to a classical symbiotic star.

Abstract

Optical spectroscopy study of the recent AG Peg outburst observed during the second half of 2015 is presented. Considerable variations of the intensity and the shape of the spectral features as well as the changes of the hot component parameters, caused by the outburst, are discussed and certain similarities between the outburst of AG Peg and the outburst of a classical symbiotic stars are shown. It seems that after the end of the symbiotic nova phase, AG Peg became a member of the classical symbiotic stars group.