Eruptions and superhumps in dwarf novae

Details Eruptions and superhumps in dwarf novae Eruptions and superhumps in dwarf novae

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84..804p&link_type=abstract

Astronomical Journal, vol. 84, June 1979, p. 804-811.

Astronomy and Astrophysics

Astronomy

72

Dwarf Stars, Light Curve, Novae, Stellar Spectrophotometry, Electrophotometers, Periodic Variations, Stellar Luminosity, Stellar Models

Scientific paper

The existence of two distinct eruption types in dwarf novae is considered. A small subclass of dwarf novae, the SU Ursae Majoris stars, show occasional very bright and long eruptions ('supermaxima'), and during supermaxima, large-amplitude photometric variations ('superhumps') at a period related to the orbital period are seen. Two new stars showing these effects, AY Lyrae and YZ Cancri, are reported. A third star, WZ Sagittae, is probably also a member of the class. Models for the superhumps are reviewed and found to be unsatisfactory. Observational constraints on a successful model are discussed.

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