[vsnet-preprint 66] WZ Sge : first letter

[Ryoko Ishioka <ishioka@kusastro.kyoto-u.ac.jp>]

Dear Colleagues,

  The following paper is accepted for publication in A&A letter.

  "First detection of the growing humps at the rapidly rising 
   stage of dwarf novae AL Com and WZ Sge"
    
  The preprint in the postscript and PDF format is available at: 
     http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/preprints/WZSGE/
  And this is also submitted to astro-ph (astro-ph/0111432).

  I acknowledge all the collaborators of VSNET. 

Best Regards,
Ryoko Ishioka 
on be half of VSNET Collaboration Team

# Now, the next paper of WZ Sge is preparing.
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\\
Paper: astro-ph/0111432
From: Ryoko Ishioka <ishioka@kusastro.kyoto-u.ac.jp>
Date: Thu, 22 Nov 2001 00:59:27 GMT   (167kb)

Title: First detection of the growing humps at the rapidly rising stage of
  dwarf novae AL Com and WZ Sge
Authors: Ryoko Ishioka, Makoto Uemura, Katsura Matsumoto, Hiroyuki Ohashi,
  Taichi Kato, Gianluca Masi, Rudolf Novak, Jochen Pietz, Brian Martin, Donn
  Starkey, Seiichiro Kiyota, Arto Oksanen, Marko Moilanen, Lew Cook et al
Comments: 4 pages, 4 figures, A&A macro in latex format, accepted to A&A
  letters
\\
  We report on time-series photometric observations in the earliest stages of
superoutbursts of the extreme dwarf novae, AL Com and WZ Sge, which started on
2001 May after the 6 years quiescence and on 2001 July after the 23 years
quiescence, respectively. We detected growth of ``early superhumps'' during the
each rising stage. Our observations reject the mass transfer instability for
the trigger of the superoutburst of WZ Sge stars, and show the existence of
some relations between the ``early superhumps'' and the spiral structure, which
give a hint of the origin of the ``early superhumps.''
\\

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