IUE observations of WX Ceti in outburst

Details IUE observations of WX Ceti in outburst IUE observations of WX Ceti in outburst

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99..339d&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, Jan. 1990, p. 339-343.

Other

22

Dwarf Novae, Iue, Peculiar Stars, Red Shift, Stellar Mass Ejection, Stellar Spectra, Cataclysmic Variables, Late Stars, Line Spectra, Roche Limit

Scientific paper

IUE observations of the peculiar dwarf nova WX Ceti roughly two weeks into a rare outburst, the first since 1963, are obtained. The SWP and LWP observations are very similar to other erupting dwarf novae, both in the line and continuum spectrum. The C IV 1549 A doublet displays blueshifted absorption, indicating the presence of a wind which has a terminal velocity of either 3150 km/s or 5450 km/s; the two possible values are due to an uncertain interpretation of features in the blue wing of the line. The line may also show a weak, redshifted emission, completing a P Cygni profile. The derived mass-loss of 0.7-2.2 x 10 to the -11th solar masses/yr is quite typical of dwarf novae in outburst. Thus, despite the unusual photometric properties of this system, long recurrence time, large amplitude outbursts, and long duration eruptions, the IUE observations reveal that the physical characteristics of the outburst are fairly typical of dwarf novae.

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