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[vsnet-unknown 55] Likely new variable star (of unknown nature)
Likely new variable star (of unknown nature)
We have received the following report of a new variable star. The object
is not cataloged either in IRAS or MSX5C.
From: "Ed Totman" <totman@home.com>
Subject: Re: [AAVSO-DIS] Is this a new variable?
Date: Sat, 15 Sep 2001 13:25:58 -0700
Hello,
I took a series of images of IC1396 over a two week period and noticed one
star that seemed to brighten slightly. I have no idea where to report this
or how to obtain survey images as Brian Skiff points out below. Can you
offer advise? What is the procedure for reporting a possible new variable?
The star is located at: 21 37 17.01 +57 26 18.5 (2000)
Here are a few pictures:
http://members.home.net/totman/astro/variable/cepheus.htm
Thank you,
Ed Totman
San Diego, CA
http://members.home.net/totman/astro/
Observatory Code: 934
----- Original Message -----
From: "Brian Skiff" <bas@lowell.edu>
To: <totman@home.com>
Sent: Saturday, September 15, 2001 1:15 PM
Subject: Re: [AAVSO-DIS] Is this a new variable?
> OK, thanks. Looking at your images carefully, it seems to me mainly
> that they are getting better (sharper, better seeing) from top to
> bottom, so at least part of the apparent change is simply that the star
> goes from being washed to being visible. There does seem to be a modest
> brightening, so one can't rule out a real change. Since this is a fairly
> faint star, it does not appear in the GCVS 4.1 or the NSV and NSVS.
> Your position seems to be correct, and corrsponds to a USNO-A2.0 star at:
> 21 37 17.01 +57 26 18.5 (2000). (It is best not to promulgate the USNO-A
> numbers themselves unless really necessary, since they are quite
transient.)
> The star is of intermediate color, so it is not obviously a red variable,
> for instance, and there is no IRAS or MSX detection. It probably bears
> watching. It could be that various sky patrol observers have additional
> images in their files. You might contact Taichi Kato of the 'vsnet' group
> (tkato@kusastro.kyoto-u.ac.jp) to ask if he could offer any suggestions
> in this regard.
>
> \Brian
vsnet-adm@kusastro.kyoto-u.ac.jp
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