Imaging and Analysis of Neon Nova V382 Vel Shell

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 Hα and [O III] 5007 Å revealing different structures in each filter. The shell’s angular diameter obtained was 9.9 arcsec, equivalent to 2.8 × 10¹⁷ cm, using the distance of 1.79 kpc obtained by the Gaia mission. The upper limit for total shell mass derived from recombination lines is M _s = 1.4 × 10^-4 M _⊙. Our photoionization models indicate an accretion disk with T _d = 60,000 K and L = 10³⁶ erg/s as main ionizing source.

Based on observations obtained at the Southern Astrophysical Research (SOAR) telescope, which is a joint project of the Ministério da Ciência, Tecnologia, Inovação e Comunicações (MCTIC) da República Federativa do Brasil, the U.S. National Optical Astronomy Observatory (NOAO), the University of North Carolina at Chapel Hill (UNC), and Michigan State University (MSU).