Superhumps in the helium dwarf nova KL Draconis.

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[sub 1]=0.76 M[sub ⊙] and M[sub 2]=0.057 M[sub ⊙] . [ABSTRACT FROM AUTHOR]