[vsnet-alert 3895] Re: QY Per fully grown superhumps

[Lew Cook <lcoo@yahoo.com>]

I am concluding a 6 hour run (01:59 UT to 08:02 UT) as I write, which
I will reduce in the next couple days and forward to Kato-san along
with last night's 5 hour run. 
Lew

--- Taichi Kato <tkato@kusastro.kyoto-u.ac.jp> wrote:
> QY Per fully grown superhumps
> 
>     The Kyoto team finished the analysis of the very successful
> 8.5-hour
> run on Dec. 30.  Four fully grown superhumps are impressively
> caught.
> Compared to Dec. 29 observations by Masi and the Kyoto team, the
> growth
> of the superhump was apparent, whose amplitude is now around 0.3
> mag.
> This growth probably explains the unstable period solution from the
> Dec. 29
> data only, when the superhumps are still under way to a growth. 
> Combined
> period analysis of Dec. 29 data by Masi and Dec. 30 data by the
> Kyoto
> team has yield the best superhump period of 0.0779 d.  We will be
> able
> to inform the updated results after finishing the analysis of
> successive
> Dec. 31 data by Masi and his colleagues.  The data indicate that
> the
> observation covered the most important part of the early stage of
> the rare superoutburst.  We thank again to Mike Simonsen for timely
> notifying us of this rare event.
> 
> Best regards,
> Taichi Kato, Makoto Uemura, Gianluca Masi
> 
> 

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