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[vsnet-campaign 1141] Re: [vsnet-alert 6442] WZ Sge: new hump structure and possible QPOs
Taichi Kato wrote:
>
> WZ Sge: new hump structure and possible QPOs
>
> Dear Colleagues,
>
> The analysis of the latest data (J. Pietz and A. Oksanen) has revealed
> the emergence of new (super)humps at phases completely different from
> the previous superhumps (during the second rebrightening). This phenomenon
> may be some sort of "late superhumps" to newly appeared superhumps during
> the second rebrightening (how complex!). There seem to be no "true" eclipse
> signals.
>
> Furthermore, large-amplitude modulations with time-scales of ~20 min.
> Although they may be substuctures of (super)hump signals, they may represent
> the emergence of new QPOs. Since some super-QPOs are known to arise from
> these slow modulations (cf. EF Peg in 1991), observers are strongly urged
> to record the evolution of short-term oscillations, as well as evolution
> of (super)humps.
>
Dear Taichi,
this actually confirms what I reported in vsnet-campaign-dn 1369 (also sent to
vsnet alert, but still not distribuited)! A very nice finding!
Regards,
Gianluca
--
***********************************************************************
* Gianluca Masi "Two things fill the soul *
* Via Madonna de Loco, 47 with awe and reverence [...]: *
* 03023 Ceccano (FR) the starry sky above me and *
* ITALY the moral law within me" *
* e-mail: gianmasi@fr.flashnet.it *
* web: http://vsnet.eurolink.it/comets/ I. Kant *
* Minor Planet Center Obs. Code: 470 - Ceccano *
* Center for Backyard Astrophysics - Italy *
* VSNET Collaboration Team member *
* CCD-astrometry-photometry@yahoogroup.com mailing-list moderator *
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