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[vsnet-obs 7446] Re: Sept. 19, CCD, JLT
- Date: Fri, 19 Sep 1997 22:20:41 +0900 (JST)
- To: vsnet-obs
- From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
- Subject: [vsnet-obs 7446] Re: Sept. 19, CCD, JLT
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Lasse Teist Jensen wrote:
> 1925+54 USNO 1425 2450709.2826 1997-09-17 0.7826 14.9, a
> 3.5 hour time series didn't reveal superhumps.
> So if the superhumps still persist then the amplitude is probably less
> than 0.1 mag.
> I did another time series last night. Not reduced yet, but the mag is
> still around 14.9.
Still, please put this object as your top priority target. Superhumps
at this outburst stage often become less apparent and low-amplitude, but
sufficiently long time-seires observations are able to show, after proper
period analysis, the correct periodicity and superhump phase, both of which
are crucial in interpreting the WZ Sge-type phenomenon. We largely suffered
from the lack of good time series observations in AL Com, and wish to pin
our hope in this USNO 1425, rather than waiting for another 20 years!
People quite often favor "named" variable stars, but as I mentioned in
vsnet-alert earlier, the first witnessed outburst may be the first and
last (in our life) chance in some category of objects. Hoping your and
vsnetter's successful observations now and after!
Regards,
Taichi Kato