Dwarf novae through the outburst cycle

Details Dwarf novae through the outburst cycle Dwarf novae through the outburst cycle

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..377p&link_type=abstract

In ESA Fourth European IUE Conf. p 377-383 (SEE N84-35135 24-88)

Physics

8

Accretion Disks, Dwarf Novae, Optical Emission Spectroscopy, Stellar Luminosity, Ultraviolet Spectroscopy, Flux (Rate), Iue, Stellar Activity, Stellar Models, Stellar Spectra

Scientific paper

Spectroscopic and photometric observations at optical and ultraviolet wavelengths of dwarf novae through their outburst cycles were obtained. The observations indicate that: different dwarf novae have different outburst patterns, but different outbursts of the same dwarf nova are very similar; at the start of the outburst the optical flux rises before the ultraviolet flux; during the decline ultraviolet and optical fluxes drop simultaneously; the spectral flux distribution of Z Cam systems is the same during standstill as during the decline from an outburst at the same mv; an appreciable ultraviolet flux is present at quiescence. Implications of these results for models of accretion disks and of dwarf nova outbursts are discussed.

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