Infrared light curves of the dwarf nova Z Chamaeleontis

Details Infrared light curves of the dwarf nova Z Chamaeleontis Infrared light curves of the dwarf nova Z Chamaeleontis

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.196..121b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 196, July 1981, p. 121-128.

Astronomy and Astrophysics

Astronomy

33

Dwarf Stars, Eclipsing Binary Stars, Infrared Astronomy, Light Curve, M Stars, Novae, Main Sequence Stars, Stellar Magnitude, Stellar Radiation, Stellar Temperature

Scientific paper

Infrared light curves of the eclipsing dwarf nova Z Cha are presented. The light curves differ from the optical light curves of this system in showing a much shallower primary eclipse, and in showing a secondary minimum which is not present in the optical. The light curves can be understood if the late-type secondary star contributes a substantial proportion of the infrared radiation. The secondary has not previously been directly observed in a dwarf nova with such a short period. From the infrared colours of the secondary it is found to be a very cool M dwarf. The K magnitude of the secondary is used to derive the distance of Z Cha giving d = 125 pc.

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