The 1993 Superoutburst of T Leonis: Early Appearance of Superhumps during a Precursor Outburst

Details The 1993 Superoutburst of T Leonis: Early Appearance of Superhumps during a Precursor Outburst The 1993 Superoutburst of T Leonis: Early Appearance of Superhumps during a Precursor Outburst

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pasj...49..583k&link_type=abstract

Publications of the Astronomical Society of Japan, v.49, p.583-587.

Astronomy and Astrophysics

Astronomy

27

Accretion, Accretion Disks, Stars: Cataclysmic, Stars: Dwarf Novae, Stars: Individual (T Leonis)

Scientific paper

We observed the SU UMa-type dwarf nova T Leo during a precursor to the superoutburst in 1993 January. V-band time-resolved CCD photometry revealed the existence of superhumps even during a precursor outburst, which otherwise closely resembled a normal outburst. This finding not only provides observational evidence of the suspected idea that a tidal instability starts to work in precursor outbursts of precursor-superoutburst complexes, but also severely constrains the growth time of superhumps to less than 10 to 20 orbital cycles.

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