Dwarf novae in outburst: simultaneous ultraviolet and optical observations of UZ Serpentis, RX Andromedae and AH Herculis

We present spectroscopic and photometric observations in the optical and ultraviolet wavelength regions made during outbursts of the three dwarf novae UZ Serpentis, RX Andromedae and AH Herculis. The observations do not cover the rapid initial rise to outburst, but rather the peak and the subsequent...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 1984-09, Vol.210 (2), p.197-221
Main Authors: Verbunt, F., Pringle, J. E., Wade, R. A., Echevarria, J., Jones, D. H. P., Argyle, R. W., Schwarzenberg-Czerny, A., la Dous, C., Schoembs, R.
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Novae, dwarf novae, recurrent novae, and other cataclysmic (eruptive) variables
Stars
Variable and peculiar stars (including novae)
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Summary:We present spectroscopic and photometric observations in the optical and ultraviolet wavelength regions made during outbursts of the three dwarf novae UZ Serpentis, RX Andromedae and AH Herculis. The observations do not cover the rapid initial rise to outburst, but rather the peak and the subsequent decline. The overall changes of the continuum distributions are different in the three objects, and for UZ Ser we present evidence that the distribution repeats from outburst to outburst, although the line strengths do not. The decline from outburst is characterized by a drop in flux at all wavelengths, the drop being faster at shorter wavelengths. The spectrum of RX And we observed at the decline is similar to that taken by Klare et al. at the same optical brightness but during a prolonged standstill.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/210.2.197