[vsnet-alert 12490] On the past standstills of WW Cet

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Mon Dec 13 10:36:56 JST 2010

   In relation to this,

"The First Historical Standstill of WW Ceti"

   Although it was not documented nor particularly shown in the light curve,
the first likely indication of a standstill in this system was noted
in 1991 November by M. Iida, who noticed that the star remained at
intermediate brightness at 12.4-13.0 following an outburst in October.
The phenomenon was confirmed by three experienced observers, the others
being M. Koshiro and M. Moriyama.  An inspection of the AAVSO data also
confirmed the finding.  It was during the early ages of internet, and
I'm not sure whether this phenomenon was communicated (e-mails not stored).
There was a similar, but less marked, phenomenon in 1992 September,
when there were several reports on this "standstill" or "unusual behavior"
in the pre-VSNET circulation and CV circulars issued internationally
by the VSOLJ team.
It was a surprise to find Kiyota-san already recorded this phenomenon
with a CCD camera!

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