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Superhumps in the helium dwarf nova KL Draconis |
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| Authors: | Matt A Wood Matthew J Casey † Peter M Garnavich Brooke Haag ‡ |
| Institution: | Department of Physics and Space Sciences &The SARA Observatory, Florida Institute of Technology, Melbourne, FL 32901, USA; Department of Physics and Astronomy, Iowa State University, Ames, IA 50014, USA; Physics Department, University of Notre Dame, 225 Nieuwland Science, Notre Dame, IN 46556-5670, USA; Physics Department, University of California, Davis, Davis, CA 95616, USA |
| Abstract: | We report on the discovery of a 25.5-min superhump period for the suspected helium dwarf nova system KL Draconis in a high state. The presence of superhumps combined with the previously observed helium spectrum and large-amplitude photometric variations confirm that KL Dra is an AM CVn system similar to CR Bootis, V803 Cen and CP Eridani. We also find a low-state photometric period at 25.0 min that we suggest may be the orbital period. With this assumption, we estimate q =0.075 , M |
| Keywords: | accretion accretion discs binaries: close stars: dwarf novae stars: individual: KL Dra novae cataclysmic variables |