KK Tel: A New SU UMa Star with P=0.088d
R. Stubbings reported on June 17 that the suspected SU UMa-type object
KK Tel was in a relatively bright outburst (vsnet-campaign-dn
2582). P. Nelson performed time-series photometry of KK Tel. The
data clearly showed 0.12 mag superhumps. The superhump period was estimated
to be rather long (~0.08 d). This observation confirmed the long-suspected
SU UMa-type nature of KK Tel. The light curve on June 18 taken by P.
Nelson showed fully developed superhumps with an amplitude of ~0.35 mag.
The light curve also showed some hints of quasi-periodic oscillations
(QPOs) with time-scales around 10 min. T. Richards performed time-series
observations on June 20. The combined data showed superhumps with a
period of 0.08841(5) d. The light curve taken by R. Santallo still clearly
showed superhumps on June 22. The mean superhump period using all observations
is 0.08804 d, but the observations are no longer expressed by a single
period (vsnet-campaign-dn
2586, 2590,
2598,
2602,
2605,
2607).
Another outburst of 14.4mag was detected by R. Stubbings on October 28.
It may be a normal outburst of this new SU UMa-type star (vsnet-campaign-dn
2938).
Links:
CCD image during outburst provided by P. Nelson:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/kktel.html
[vsnet-campaign-dn
2592]
Time-series observation by T. Richards, see [vsnet-campaign-data
98]
Preprint by Kato et al.:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-preprint/msg00093.html
VSNET special page for this object:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/kktel.html