[vsnet-alert 6224] Re: WZ Sge: superhump period change

[erik kuulkers <erikk@sron.nl>]

Dear Colleagues,

I was comparing the true superhump period quoted in vsnet-alert 6221,
see below, with that of the orbital superhumps such as quoted in e.g., IAU
Circ. 7672:
Orbital superhump period: 0.056652+/-0.000006 day = 81.579+/-0.009 min
True superhump period   : 0.057157+/-0.00077  day = 82.3  +/-1.1   min

Statistically speaking the the "true" superhump period is not yet 
significantly different from the orbital superhump period...
But I guess that it will certainly become significant in the next days
when more superhumps come in!

Regards,

Erik Kuulkers


On Tue, 7 Aug 2001, Taichi Kato wrote:

> Re: WZ Sge: superhump period change
> 
> Dear Colleagues,
> 
>    We have apparently found the final answer!  The there was an interchange
> of maxima from early superhumps to true superhumps around Aug. 5.8 UT,
> this affected the period analysis on Aug. 5.
>    Before then, the maxima of true superhumps were superimposed on the
> profile of early superhumps.  By taking this finding into account, we have
> been able to determine the period of true superhumps as 0.057157 +/- 0.00077 d.
> This period well expresses all maxima up to Aug. 7.07 UT.
> 
> Regards,
> Taichi Kato
> VSNET Collaboration team
> 
>

VSNET Home Page

Return to Daisaku Nogami

---

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