Superhumps of CC Cancri Revisited
Abstract
We observed the 2001 November superoutburst of CC Cnc. This observation represents the first detailed coverage of a superoutburst of this object. The best-determined mean superhump period is 0.075518 ± 0.000018 d, which is 2.7% longer than the reported orbital period. This fractional superhump excess is a quite typical value for a normal SU UMa-type dwarf nova, excluding the previously raised possibility that CC Cnc may have an anomalously large fractional superhump excess. During the superoutburst plateau, the object showed a decrease of the superhump period at dot{P}/P = -10.2 ± 1.3 × 10-5, which is one of the largest negative period derivatives known in all SU UMa-type dwarf novae.
- Publication:
-
Publications of the Astronomical Society of Japan
- Pub Date:
- December 2002
- DOI:
- 10.1093/pasj/54.6.1017
- arXiv:
- arXiv:astro-ph/0209322
- Bibcode:
- 2002PASJ...54.1017K
- Keywords:
-
- accretion;
- accretion disks;
- stars: dwarf novae;
- stars: individual (CC Cancri);
- stars: novae;
- cataclysmic variables;
- Astrophysics
- E-Print:
- 5 pages, 5 figures, to appear in Publ. Astron. Soc. Japan