KK Tel - new SU UMa-type dwarf nova

(Outburst image by Peter Nelson)

(Wide-field outburst image by Peter Nelson)

(Typical superhump observed by Peter Nelson)


(vsnet-outburst 4153)

Dear Colleagues,

Rod Stubbings report that the suspected SU UMa-type object KK Tel is undergoing a relatively bright outburst. Since the outburs looks like a superoutburst, and is favorably situated, intensive time-resolved photometry is very strongly encouraged. (V877 Ara is still an active target near the similar right ascention; please make the best time-sharing between these targets. Good luck!)

  YYYYMMDD(UT)   mag  observer
  20020519.685  <146  (Rod Stubbings)
  20020519.705  <142  (Rod Stubbings)
  20020520.778  <150  (Rod Stubbings)
  20020522.781  <150  (Rod Stubbings)
  20020523.794  <150  (Rod Stubbings)
  20020531.628  <138  (Rod Stubbings)
  20020602.526  <138  (Rod Stubbings)
  20020607.767  <150  (Rod Stubbings)
  20020611.612  <144  (Rod Stubbings)
  20020612.635  <142  (Rod Stubbings)
  20020617.501   138  (Rod Stubbings)
  20020617.572   138  (Rod Stubbings)

Superhump detection!

(vsnet-alert 7406)

KK Tel: new SU UMa-type dwarf nova in superoutburst!

Dear Colleagues,

Peter Nelson has sent time-series photometry of KK Tel. The data clearly show 0.12 mag superhumps. Although the period is not well established, the object seems to have a rather long (~0.08 d) superhump period. This observation confirms the long-suspected SU UMa-type nature of KK Tel! Congratulations to Peter Nelson on this remarkable detection!

The published suspected orbital period is 2.02 hours (Howell et al. 1991, PASP 103, 300). The present observation seems to be consistent with this period.

Further observations are strongly encouraged to precisely determine the superhump period. Peter Nelson also commented the presence of a close companion. The images has been delivered to Yamaoka-san for accurate astrometry and quiescent identification.

Taichi Kato
on behalf of the VSNET Collaboration team

VSNET light curve (requires Java)

Light curve

VSNET data search


Return to HomePage

Return to Daisaku Nogami's page