[vsnet-alert 6887] 1RXS J232953.9+062814 period

[Taichi Kato <tkato>]

1RXS J232953.9+062814 period

Dear Colleagues,

    We have received new data from A. Oksanen and S. Kiyota (3 nights).
We have been analyzing the Kyoto data (all nights up to last night),
and have analyzed the data by Okayama Univ. of Science (K. Tanabe and
K. Matsumoto, 2 nights), and the data from K. Torii (RIKEN, 3 nights).
[Because of the large amount of data, and the co-existence of many targets
of immediate interest, please remind that the result presented here is
very preliminary].

    The object is still on its slow declining phase up to Nov. 16.
The superhump signal is becoming weaker, and the light curve seems to be
more dominated by (likely) orbital modulations.  Preliminary period analysis
between Nov. 14 and 16 has yielded a period 0.04522 d (still allowing for
other possibilities, pending further analysis).  The folded light curve at
this period show strong humps and secondary humps at phase 0.6.  The overall
feature resembles the quiescent light curve presented by Tovmassian.
Since this present analysis can be still affected by superhumps, we need
further intensive observations to clarify the period structure.  If we
adopt this period as the orbital period, the superhump excess is about 2%.

    Further analysis is keenly ongoing.  Please send any data or information
to Uemura-san (uemura@kusastro.kyoto-u.ac.jp).

Regards,
Taichi Kato
VSNET Collaboration team

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