[vsnet-chat 4734] Possible variable stars on DSS-2 images

[Seiichi Yoshida <comet@aerith.net>]

Dear colleagues,

During the CV surveys in the MISAO Project, I found some possible
variable stars. There are several DSS2 I-band plates in different
years and the star images on them look evidently variable. But there
are only one night MISAO images. So I cannot confirm the variability
on the MISAO images.

Here is one example.

MPRE 2001-0187
  R.A.  05h13m59s.63
  Decl. +30o06'57".4  (2000.0)

http://vsnet.aerith.net/tmp/MPRE2001-0187.gif

I can measure the magnitude range of the star on the two DSS2 I-band
plates using the PIXY System 2. But I cannot measure the magnitude
because I have no reference catalog for I-band photometry.

I think there are many people who have discovered those possible
variable stars. And I think there is no rule to register them as
variable stars, is that right?

I have been ignoring those possible variable stars on DSS2 plates. But
now I think I had better report them as new variable stars. So I will
assign MisV numbers for them and report to vsnet-newvar.

How do you think of it? There may be other better ways for them...

Best regards,

--
Seiichi Yoshida
comet@aerith.net
http://vsnet.aerith.net/

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