Spectroscopic analysis of tremendous--outburst--nova candidates

Abstract

In the course of a long-term project investigating classical novae with large outburst amplitudes, we have performed optical spectroscopy of several old-nova candidates. We here present the spectra of the candidates V630 Sgr, XX Tau, CQ Vel, V842 Cen, and V529 Ori, that hitherto lacked such classification. While the first four show typical spectra for cataclysmic variables, and can thus be identified as such, V529 Ori is probably misclassified. Of special interest are the two systems XX Tau and V842 Cen, which show all signs for being low mass transfer systems. As such they can be used to judge the evolution scenarios for novae. In particular, given the rather young age of their outburst, it appears more likely that these systems are not on their way into hibernation, (i.e., cutting off mass transfer for a longer period of time), but are simply settling down towards their original configuration of comparatively low, but steady, mass transfer, such as for dwarf novae.

7 pages, 6 figures, to be published in A&A

References in corpus (4)

• Theoretical Modeling of the Thermal State of Accreting White Dwarfs Undergoing Classical Novae
• Infrared Properties of Cataclysmic Variables from 2MASS: Results from the 2nd Incremental Data Release
• Deep optical imaging of nova remnants II. A southern-sky sample
• High speed photometry of faint Cataclysmic Variables: III. V842 Cen, BY Cir, DD Cir, TV Crv, V655 CrA, CP Cru, V794 Oph, V992 Sco, EU Sct and V373 Sct

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• 57 second oscillations in Nova Centauri 1986 (V842 Cen)
• Life after eruption - I. Spectroscopic observations of ten nova candidates
• SALT observations of southern post-novae
• Life after eruption - II. The eclipsing old nova V728 Scorpii
• Life after eruption - IV. Spectroscopy of 13 old novae
• Characterization of Dwarf Novae Using SDSS Colors
• Life after eruption VIII: The orbital periods of novae
• Multiwavelength Photometry and Hubble Space Telescope Spectroscopy of the Old Nova V842 Centaurus
• Spectroscopic classification of cataclysmic variable candidates