IUE and Optical Spectra of AL Comae Berenices During a Rare Superoutburst

Details IUE and Optical Spectra of AL Comae Berenices During a Rare Superoutburst IUE and Optical Spectra of AL Comae Berenices During a Rare Superoutburst

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....111.2379s&link_type=abstract

Astronomical Journal v.111, p.2379

Astronomy and Astrophysics

Astronomy

11

Cataclysmic Variables, Stars: Individual: Al Comae Berenices, Stars: Activity

Scientific paper

We present optical spectra from 3 to 21 days and lUE spectra at 10 and 19 days following the outburst of the extreme amplitude, very short orbital period cataclysmic variable AL Corn after a 20 yr quiescent interval. The lUE spectra have no evidence of P Cyg profiles and show an early presence of Lyα absorption, which may be indicative of a 25,000 K white dwarf. The optical spectra show only weak Balmer absorption throughout this interval, with no dramatic changes within the 3 weeks. The spectra are compared to those available for the few other systems that had similar long outbursts following a long quiescence (WZ Sge, WX Cet, SW UMa).

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