[vsnet-j 363] RZ Leo: "true" superhumps evolved!!

[Taichi Kato <tkato>]

RZ Leo: "true" superhumps evolved!!

　より長い周期の本物のスーパーハンプが成長してきました。WZ Sge型でこれまで
　にも見られた現象です。光度も減光傾向が止まり、さらに増光するかも知れませ
　ん。

Dear Colleagues,

    The Dec. 23 data at Kyoto (Kyoto team) and Tsukuba (S. Kiyota) have
revealed that fully grown "true" superhumps with an amplitude of ~0.3 mag
have finally evolved.  The best period determined from the data is 0.0808 d,
which is 6.0% longer than the period of the "early superhumps" by the Kyoto
team (P=0.0762, vsnet-alert 5451, 5452), or 7.0% longer than Vanmunster's
period (P=0.0755, vsnet-alert 5454).  This finding perfectly qualifies
the variation as being genuine superhumps, which had just begun to develop.
The relatively rapid fading trend in the early epoch has apparently
slowed down as the appearance of genuine superhumps.

    We have also received earlier data from Gianluca Masi, and we hope
we will be able to refine the above values by incorporating all the data.

    Data to the VSNET Collaboration team RZ Leo project should be sent to
Ishioka-san (ishioka@kusastro.kyoto-u.ac.jp the campaign coordinator)
with a cc: to me, or more directly to the
vsnet-campaign-data list (vsnet-campaign-data@kusastro.kyoto-u.ac.jp,
see [vsnet-campaign-data 1] for the description of the purpose and usage
of the list).

   Looking forward to your successful observations!

Regards,
The VSNET Collaboration team

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