Imaging and analysis of neon nova V382 Vel shell

TL;DR

This paper reports the imaging and analysis of the spatially resolved shell of nova V382 Vel using adaptive optics, revealing its structure, size, mass, and ionization properties.

Contribution

It provides the first detailed imaging and modeling of V382 Vel's shell, including size, mass, and ionization source, using advanced adaptive optics and Gaia data.

Findings

Shell diameter of 9.9 arcsec corresponding to 2.8 x 10^{17} cm.

Shell mass upper limit of 1.4 x 10^{-4} solar masses.

Main ionizing source identified as an accretion disk with T_d=60,000 K.

Abstract

We present the detection and imaging of the spatially resolved shell of nova V382 Vel with SOAR adaptive optics module (SAM). The shell was observed in narrow band filters H$\alpha$ and [O III] 5007\AA, revealing different structures in each filter. The shell's angular diameter obtained was $9.9$ arcsec, equivalent to $2.8 \times 10^{17}$ cm, using the distance of $1.79$ kpc obtained by Gaia mission. The upper limit for total shell mass derived from recombination lines is $M_{s} = 1.4 \times 10^{-4}$ M$_{\odot}$. Our photoionization models indicate an accretion disk with $T_d=60,000$ K and L=$10^{36}$ erg/s as main ionizing source.