[vsnet-alert 7455] KV Dra rare outburst

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

KV Dra rare outburst

   As Mike Simonsen reported, the SU UMa-type dwarf nova KV Dra
(RX J1450.5+6403) is reported to be in outburst.  The object underwent
an superoutburst in 2000 May (see vsnet-alert 4858 and Nogami et al.
2000 A&A 364, 701).  However, only two normal outbursts have
been reported since then.  The outburst frequency of this object may
be low.

   Kato et al. (2001) PASJ 53, 1191 wrote:

>  System with a short orbital period (Porb = 0.05898 d,
>  P_SH = 0.0601 d).  Nogami et al. (2000) suggested the object to be
>  an intermediate object between WZ Sge-type and ER UMa-type stars.
>  One well-established superoutburst in 2000 May and subsequent normal
>  outbursts are known.  The lack of further outbursts (VSNET) may suggest
>  a lower typical frequency of outbursts than proposed by
>  Nogami et al.  Kato et al. (2000) reported double-wave modulations
>  in quiescence, which are reminiscent of those of WZ Sge.
>  More observations are needed to establish the outburst behavior and
>  the evolution of superhumps.

   Although the present magnitude is fainter than the 2000 superoutburst,
please observe KV Dra as intensively as possible!

Regards,
Taichi Kato
VSNET Collaboration team

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