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[vsnet-alert 2517] Superhumps in SU UMa
- Date: Sun, 10 Jan 1999 22:22:49 +0900 (JST)
- To: vsnet-alert
- From: Taichi Kato <tkato>
- Subject: [vsnet-alert 2517] Superhumps in SU UMa
- Sender: owner-vsnet-alert@kusastro.kyoto-u.ac.jp
Superhumps in SU UMa
CCD time-series photometry on Jan. 9 (Ouda team rooftop station, 25-cm
SCT + ST-7 unfiltered) has revealed the presence of large-amplitude
superhumps (exceeding 0.4 mag). The best superhump period determined
using the PDM method was 0.0780 d, superhump maxima ocurring on 9.467,
9.549, 9.631 UT etc. The present observation has confirmed that the
superoutburst, in addition to the immediate precursor on Jan. 7, was
preceded by a photometrically unusual normal outburst, exhibiting transient
superhump activity.
Regards,
Taichi Kato
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