UV turn-off times of classical novae

Details UV turn-off times of classical novae UV turn-off times of classical novae

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..129...23g&link_type=abstract

Astronomy and Astrophysics Supplement, v.129, p.23-30

Astronomy and Astrophysics

Astrophysics

16

Stars: Novae And Cataclysmic Variables, Stars: White Dwarfs, Ultraviolet: Stars, X-Rays: Stars

Scientific paper

We present IUE spectra of classical novae obtained at least one year after the outburst. The UV luminosities are compared with the ROSAT\ observations and significant parameters of the systems. The turn-off times derived from the IUE data are in agreement with the ROSAT\ results, showing that most novae decline in bolometric luminosity 1-5 years after the outburst. This is a signal of the exhaustion of the fuel in the hydrogen-burning layer on top of the white dwarf. There is not any clear dependence of the turn-off time on the speed class, the chemical composition or other parameters of the system. Data indicate that only a small fraction of the accreted layer is left on the white dwarf after the outburst. Based on observations made with the International Ultraviolet Explorer collected at the Villafranca Satellite Tracking Station and de-archived from the ESA-VILSPA Database.

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