Lesson learned from (some) recurrent novae

TL;DR

This paper analyzes early decline and nebular spectra of recurrent novae YY Dor and LMC 2009, highlighting common features that suggest similar white dwarf progenitors and post-outburst evolution.

Contribution

It provides a comparative spectral analysis of recurrent novae, proposing a unified view of their progenitors and evolutionary phases.

Findings

Shared spectral characteristics among studied novae

Indications of similar white dwarf progenitors

Consistent post-outburst spectral evolution

Abstract

In this talk we present early decline and nebular spectra of the recurrent novae YY Dor and nova LMC 2009. These and a few other recurrent novae of the same type, share similar spectral characteristics and evolution. We will critically discuss those common features suggesting same white dwarf progenitor and post outburst phases for all of them.