Infrared photometry of the intermediate polar XYArietis (H0253+193)

Details Infrared photometry of the intermediate polar XYArietis (H0253+193) Infrared photometry of the intermediate polar XYArietis (H0253+193)

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.282..699a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 282, Issue 2, pp. 699-703.

Astronomy and Astrophysics

Astronomy

9

Binaries, Close - Binaries, Eclipsing - Stars, Individual, Xyari - Novae, Cataclysmic Variables - X-Rays, Stars

Scientific paper

Near-infrared H-band photometry of the eclipsing intermediate polar XYAri shows an ellipsoidal variation from the Roche-lobe-filling secondary star, and a marginally significant spin pulse. We model the light curve, finding that the mass ratio of the system lies in the range 0.43<q<0.71, and the system inclination in the range 80 deg<i<87 deg. We show that IR-emitting material circles around the white dwarf, consistent with an accretion disc extending to more than 0.3 of the primary's Roche lobe. The H-band light of this material cannot be asymmetric about the white dwarf by more than a factor of 2.

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