A visible and infrared study of the eclipsing dwarf nova OY Carinae -II. The infrared light curves.

September 1984 • 1984MNRAS.210..223B

Authors • Berriman, G.

Abstract • This paper presents three simultaneous visible (V) and infrared (J, H, K) light curves of the eclipsing dwarf nova binary system OY Carinae in quiescence. The infrared light curves show a secondary minimum, not seen in the visible, which is the ellipsoidal variations of the red dwarf and its eclipse by the accretion disk surrounding the white dwarf companion. The red star, an M dwarf, supplies between 30 and 60 percent of the total light at J, H and K. This requires that the system is between 100 and 300 pc away. The infrared continuum of the accretion disk around the white dwarf companion comes largely from the optically thin gas giving rise to the emission lines seen in the visible and ultraviolet. OY Car is the first dwarf nova in which this has been found to be so.


IPAC Authors


Bruce Berriman

Senior Scientist