[vsnet-alert 6199] WZ Sge: dramatic changes in the light curve

[Gianluca Masi <gianmasi@fr.flashnet.it>]

Dear Colleagues,
I have already given a preliminary description of my latest results with WZ Sge in
vsnet-alert 6197 (BTW: I did a typo while giving the period: please read 0.056d instead of
0.058). Please find this more detailed note.

The sky was clear on Aug.04 and I observed for 7 hours, once again getting more than 1500
images. The resulting curve is amazing. The maxima are now almost equivalent (with some
exceptions) and they look superimposed, resembling the shape of the letter "M". Respect to
the previous night, the modulation is now larger, of about 0.2 mag. PDM analysis of this
run indicates as the better period 0.05609d (using pdm.exe from vsnet website). The
dramatic changes (once again!) in the light curve can suggest emerging superhumps
(negative???). Of course better conclusions will be available just after combining several
datasets from different station 8right now, Michael Richmond is getting photometry under
good sky conditions).

Updated light curves at 

http://vsnet.eurolink.it/comets/wzsge.htm

Enjoy!

Follow-up, as well as further analysis are urgently requested.

Regards,
Gianluca Masi

-- 
***********************************************************************
* 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@egroup.com mailing-list moderator         *
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