[vsnet-alert 3330] Re: V2051 Oph superoutburst

["William S G Walker" <astroman@voyager.co.nz>]

Greetings, All,

The manual reductions of the measures of V2051 Ophiuchi on 28 July have now
been completed. These show clear features which might be superhumps at JD
50706.8315 and .8959 (about central eclipse plus 0.27phase). The interval
of .06441 is ~3% longer than the orbital period. My measures on 30 July are
cloud affected so any humps are hidden in the noise but there are some
possibilities on 31 July. By 1 August the curve between the eclipses is
fairly featureless.

I'm interested to see that Gordon Garrard is still getting data on this
star - my telescope drive failed for the second time in six months so  
no joy from this area.

Regards,
Stan
----------
> From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
> To: vsnet-alert@kusastro.kyoto-u.ac.jp
> Subject: [vsnet-alert 3308] V2051 Oph superoutburst
> Date: Friday, July 30, 1999 3:30 AM
> 
> V2051 Oph superoutburst
> 
>    The data kindly provided by Gordon Garradd (cf. vsnet-obs 22039)
> indicates the current outburst of V2051 Oph is indeed a superoutburst.
> The superhump structures up to amplitude 0.4 mag are visibile around
> eclipse phases 0.5-0.6 in July 29 (so please continues observations
outside
> eclipses!).  The single eclipse caught on July 28 is highly asymmetric,
> indicating the superhump light source was just asymmetrically eclipsed.
> The present observation thus confirms the SU UMa-type signature of
> this system, independently discovered by S. Kiyota and L. T. Jensen on
> the 1998 May outburst occasion.

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp