[vsnet-alert 9301] BZ UMa is an SU UMa-type dwarf nova!

[Patrick Schmeer]

Dear fellow observers,
 
The observations by Jochen Pietz and Michael Koppelman 
have proven that this is really the long-awaited
superoutburst and that BZ UMa is (not unexpectedly) an
SU UMa-type dwarf nova. Please keep on observing this
wonderful CV.
 
Regards,
Patrick

> On Saturday 14 April 2007 03:03, Jochen Pietz wrote:
> > BZ UMa still bright with small (0.08 mag) modulations.
> >         http://home.arcor.de/j.pietz/index.html#bzuma
> >
> > BZ UMa   2007-04-14.014 11.2C
> >
> > Regards,
> > Jochen Pietz
> 
> Amplitude of modulations increased to 0.14 mag
> (2007-04-14.13UT) with a period around 0.0713 days.
> 
> Regards,
> Jochen Pietz
----------------------------------------------------------------
--- Michael Koppelman <lolife at bitstream.net> wrote:

> Von: Michael Koppelman <lolife at bitstream.net>
> Datum: Sat, 14 Apr 2007 12:26:40 -0500
> An: CBA Chat <cba-chat at cba.phys.columbia.edu>
> CC: AAVSO photometry <aavso-photometry at aavso.org>
> Betreff: (cba:chat) Re: (cba:news) BZ UMa long-awaited superoutburst?
> 
> It's humping!
> 
> http://www.lolife.com/astronomy/bzuma.png
> 
> M.
> 
> 
> On Apr 13, 2007, at 9:41 PM, Michael Koppelman wrote:
> 
> > OK, Patrick convinced me. I'm going to swing over there as of  
> > 2:45UT. Let me know if someone else picks it up further west.
> >
> > M.
> >
> >
> > On Apr 13, 2007, at 9:33 PM, Patrick Schmeer wrote:
> >
> >> The current bright outburst of BZ UMa is definitely
> >> longer than its other outbursts in the past twenty
> >> years - and looks like a superoutburst of an SU UMa-
> >> type dwarf nova. The previous outbursts resembled
> >> normal UGSU outbursts or outbursts of intermediate
> >> polars. BZ UMa should stay high on the agenda of
> >> observers in the northern hemisphere, who should
> >> watch out for the emergence of superhumps.               





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