Superoutburst of BR Lup in 2003 April

(Outburst CCD image by Greg Bolt)
(Wide-field CCD image by Berto Monard)
(CCD image by Peter Nelson on April 15)

Outburst!

(vsnet-campaign-dn 3571)

BR Lup definite superoutburst

BR Lup is undergoing a definite superoutburst! Time-series photometry is strongly encouraged during the current very favorable superoutburst! (No superoutburst of BR Lup was completely covered in the past).

  YYYYMMDD(UT)   mag  observer
  20030327.665  <146  (Rod Stubbings)
  20030329.476  <144  (Rod Stubbings)
  20030330.583  <144  (Rod Stubbings)
  20030331.462  <142  (Rod Stubbings)
  20030402.533  <144  (Rod Stubbings)
  20030403.455   146  (Rod Stubbings)
  20030404.500   144  (Rod Stubbings)
  20030405.462   143  (Rod Stubbings)
  20030406.731   140  (Rod Stubbings)

Regards,
Taichi Kato
VSNET Collaboration team

Superhumps!

(vsnet-campaign-dn 3574)

BR Lup: fully grown superhumps!

Dear Colleagues,

We have received Apr. 7 long run on BR Lup from Greg Bolt. The data clearly show fully grown superhumps with an amplitude (slightly variable) of 0.20 mag. The data also show some hint of quasi-periodic oscillations (QPOs). The superhump period determined from this single-night run is 0.083 d, which is generally in agreement with, but seems to be slightly longer than the previously determined period. Further observations are strongly encouraged. We have also received representative images, which will be posted later on the Web.

Regards,
Taichi Kato
VSNET Collaboration team

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