[vsnet-chat 7491] Re: [baavss-alert] EG Cnc fading

[RICHARD MILES]

Latest observation:
2009 Oct 13 1412UT, JD 2455118.093  17.26V (+/-0.02)
2.0-m Faulkes Telescope North + V filter.

Richard Miles
P.S. No more reports hereafter from me unless activity is resumed

----- Original Message ----- 
From: "Patrick Schmeer" <pasc1312-aavso at yahoo.de>
To: <baavss-alert at yahoogroups.com>; <cvnet-discussion at yahoogroups.com>; 
<vsnet-chat at ooruri.kusastro.kyoto-u.ac.jp>
Sent: Tuesday, October 13, 2009 2:53 PM
Subject: Re: [baavss-alert] EG Cnc fading


> No, Gary and Eddy, there is no need to speculate for several
> millennia.
>
> After solar conjunction of EG Cnc, I have been following this
> CV since mid-September 2009 without noticing any brightening,
> and Hazel McGee had EG Cnc at fainter than mag 15.4 on Oct.
> 4 and 5, so the current outburst was very probably not
> preceeded by a superoutburst. What we are seeing now is not
> the rapid fading after a supermaximum, because the outburst
> was noticed merely 7 days after Hazel's last observation;
> this time interval is too short for a superoutburst.
> The Oct. 12 outburst was either a normal outburst or the
> precursor of a superoutburst.
>
> If I remember correctly, Taichi Kato conjectured a few
> years ago that WZ Sge-stars undergo only superoutbursts,
> but not normal outbursts.
>
> I think, however, that WZ Sge-stars can undergo normal
> outbursts. Even if these normal outbursts are twice or
> three times as frequent as the supermaxima, they can
> be easily missed considering the fact that they last
> only two or three days and may occur only every few
> years. Furthermore, for stars near the ecliptic like
> EG Cnc, GW Lib, and RZ Leo, there is a gap in the
> coverage of several weeks or even a few months around
> solar conjunction.
>
>> Or Gary, it may be the first UGWZ star that shows
>> short faintish outbursts.
>
> Please note that a normal outburst of the UGWZ
> candidate KX Aql was observed on 2007 May 26
> (mag 14.1, Jeremy Shears).
>
> Regards,
> Patrick
>
>
> --- Gary Poyner <garypoyner at blueyonder.co.uk> wrote:
>
> Yes indeed Eddy. That would certainly be something! More
> probable that the maximum was missed, and Ian caught the
> decline, or an echo?
> We could speculate until Belgium win the World Cup :^)
>
> Cheers,
> Gary
>
> ----- Original Message ----- 
> From: "Eddy Muyllaert" <eddy.muyllaert1@ telenet.be>
> To: <baavss-alert@ yahoogroups. com>
> Sent: Tuesday, October 13, 2009 10:16 AM
> Subject: RE: [baavss-alert] EG Cnc fading
>
>> Or Gary, it may be the first UGWZ star that shows
>> short faintish outbursts.
>>
>> Eddy