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.

24 pages, 19 figures, A&A accepted

References in corpus (8)

• First science with SALT: peering at the accreting polar caps of the eclipsing polar SDSS J015543.40+002807.2
• Helium Nova on a Very Massive White Dwarf -- A Light Curve Model of V445 Puppis (2000) Revised
• A Universal Decline Law of Classical Novae. III. GQ Mus 1983
• The secrets of T Pyx: I. UV observations
• 57 second oscillations in Nova Centauri 1986 (V842 Cen)
• RR Pictoris: an old nova showing superhumps and QPOs
• The Detection of a 3.5-h Period in the Classical Nova Velorum 1999 (V382 Vel) and the Long Term Behavior of the Nova Light Curve
• Life after eruption - IV. Spectroscopy of 13 old novae

Cited by in corpus (5)

• A UV and optical study of 18 old novae with Gaia DR2 distances: mass accretion rates, physical parameters, and MMRD
• The $UBV$ Color Evolution of Classical Novae. III. Time-Stretched Color-Magnitude Diagram of Novae in Outburst
• Life after eruption VIII: The orbital periods of novae
• Life after eruption - VI. Recovery of the old novae EL Aql, V606 Aql, V908 Oph, V1149 Sgr, V1583 Sgr and V3964 Sgr
• Review of light curves of novae in the modified scales. I. Recurrent novae