SALT observations of southern post-novae

Abstract

We report on recent optical observations of the stellar and the nebular remnants of 22 southern post-novae. In this study, for each of our targets, we obtained and analysed long-slit spectra in the spectral range 3500-6600 A and in H$\alpha$+NII narrow-band images. The changes in the emission lines' equivalent widths with the time since the outburst agree with earlier published results of other authors. We estimated an average value $\alpha$=2.37 for the exponent of the power law fitted to the post-novae continua. Our observations clearly show the two-component structure of the V842 Cen expanding nebulae, owing to the different velocities of the ejected matter. We discovered an expanding shell around V382 Vel with an outer diameter of about 12 arcsec.

arXiv comment24 pages, 19 figures, A&A accepted

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Cited by in corpus (12)

• The Thermonuclear Runaway and the Classical Nova Outburst
• A UV and optical study of 18 old novae with Gaia DR2 distances: mass accretion rates, physical parameters, and MMRD
• A New Catalogue of Galactic Novae: Investigation of the MMRD relation & Spatial Distribution
• The Distances of the Galactic Novae
• V4743 Sgr, a magnetic nova?
• Optical observations of "hot" novae returning to quiescence
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• Discovery of a new classical nova shell around a nova-like cataclysmic variable
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• Imaging and analysis of neon nova V382 Vel shell
• Review of light curves of novae in the modified scales. I. Recurrent novae