[vsnet-alert 11477] Re: [vsnet-outburst 10542] VX For: new SU UMa-type dwarf nova!

Stockdales thestockdalefamily at bigpond.com
Wed Sep 16 20:58:33 JST 2009


Astrometry on the original images yields the following coordinates for VX
For....

RA 03h 26m 45.71s,  Dec -34d 26m 24.9s

Regards,
Chris


-----Original Message-----
From: vsnet-outburst-bounces at ooruri.kusastro.kyoto-u.ac.jp
[mailto:vsnet-outburst-bounces at ooruri.kusastro.kyoto-u.ac.jp]On Behalf Of
Taichi Kato
Sent: Wednesday, 16 September 2009 10:15 AM
To: suuma at yahoogroups.com; variable_star_forum at yahoogroups.com;
vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp; vsnet-alert at yahoogroups.com;
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vsnet-outburst at ooruri.kusastro.kyoto-u.ac.jp; vsnet-outburst at yahoogroups.com
Subject: [vsnet-outburst 10542] VX For: new SU UMa-type dwarf nova!

VX For: new SU UMa-type dwarf nova!

   Chris Stockdale has reported observations on Sep. 15.
The data clearly show the presence of superhumps (unlikely early
superhumps) with amplitudes of 0.1 mag.  The period is around
1.5 hour.  The profile of the superhumps suggest that either
the superhumps are still evolving or are already decaying.
Unless Stubbings missed the early part of the outburst,
the former possibility is more likely.  The emergence of superhumps
at this (supposedly early) stage would suggest a more ordinary
SU UMa-type dwarf nova rather than an extreme WZ Sge-type like object.
Further observations are strongly encouraged.
Since the precise coordinates have not been yet available, astrometry
is also wanted.


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