[vsnet-alert 5893] AL Com outburst, most recent data

[Taichi Kato <tkato>]

AL Com outburst, most recent data

  As already reported, the WZ Sge-type dwarf nova AL Com is undergoing
an extremely rare outburst (likely superoutburst)!  The last outburst
was in 1995 April, when an extensive VSNET campaign yielded a very
fruitful result.  The VSNET Collaboration team has already started
another extensive campaign, which has most likely covered the early rise
to maximum, which was not observed in 1995!  Happy observing, and please
report your progress to vsnet-campaign-dn, important detections to
vsnet-alert and vsnet-campaign.  Raw data should be sent to the
campaign coordinator, R. Ishioka (ishioka@kusastro.kyoto-u.ac.jp)
or to vsnet-campaign-data.  The object may brighten further, and will
be an excellent target for long time-series CCD photometry with small
telescopes.  Spectroscopy with large telescopes to catch the signal
of the secondary star, or the structure in the accretion disk, is
also highly encouraged.

  This message is also sent to the supernova group, since AL Com is
located close to M88, and was initially discovered as a possible
supernova.

  see:
  http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/alcom1.html
  (this URL only provides likes to the messages in 1995, but will be
  useful in determining the strategy on the current outburst).

  related papers:
  http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/preprints/AL_Com/
  http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/preprints/AL_Com-2/

  YYYYMMDD(UT)   mag  observer
  20010509.962  <154  (M. Reszelski)
  20010511.922  <139  (E. Muyllaert)
  20010511.940  <139  (H. McGee)
  20010512.917  <154  (M. Reszelski)
  20010512.928  <139  (E. Muyllaert)
  20010512.955  <139  (H. McGee)
  20010512.960  <155  (C. P. Jones)
  20010513.017  <155  (G. Poyner)
  20010513.235  <139  (M. Simonsen)
  20010513.410  <135  (R. Stubbings)
  20010513.501  <139  (H. Itoh)
  20010513.939  <148  (P. A. Dubovsky)
  20010514.481  <135  (R. Stubbings)
  20010514.867  <154  (M. Reszelski)
  20010514.887  <148  (P. A. Dubovsky)
  20010515.515  <135  (R. Stubbings)
  20010516.887  <154  (M. Reszelski)
  20010516.917  <139  (E. Muyllaert)
  20010516.921  <148  (P. A. Dubovsky)
  20010516.965  <155  (G. Poyner)
  20010517.898  <154  (M. Reszelski)
  20010518.510   134  (S. Kerr)
  20010518.882   129  (E. Muyllaert)
  20010518.902   128  (C. P. Jones)

Regards,
VSNET Collaboration team

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