[vsnet-alert 5348] M31 nova suspect (fwd)

[Taichi Kato <tkato>]

From afamstar@libero.it Wed Nov  1 12:55 JST 2000
Date: Wed, 01 Nov 2000 03:55:20 +0000
From: afamstar <afamstar@libero.it>
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To: redazione@coelum.com
CC: yamaoka@rcsvr.rc.kyushu-u.ac.jp, tkato@kusastro.kyoto-u.ac.jp,
        dbishop@vhdl.org, afamstar@libero.it
Subject: Re: Image of F. Ewalt
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Hi all,
I just checked the SIMBAD database about our "suspect": within 15 arsec of
radius
(exaggerating the uncertainty of our astrometric position) there is no any
known object in the SIMBAD catalog (of any kind). The nearest variable
star known has coordinates: R.A. = 00h42m54.2s, Decl. = +41d07'40"
(equinox 2000.0).
The GCVS (4th Edition-Kholopov+,1988) hasn't any entry within 30 arcsec of
the given position. So, whatever it is, seems to be new. Moreover, I
consider that it would be rather strange if a variable star with a peaking
magnitude close to (unfiltered CCD) 17 was miss in all the previous
surveys in M31 (Asiago, Palomar, etc.).
Giving the photometric behaviour, I also consider that we can rule out a
cepheid in M31 or a Galactic Mira. What is left is a Galactic cataclismic
variable or a Nova in M31. Giovanni Anselmi (editor of the Italial
astronomical magazine "Coelum") is trying to convince some professional
astronomer with good telescopes to take a spectra of this thing. This
would provide a clear answer about the situation.
Thaks a lot to all of you for your help!
Giovanni Sostero (Remanzacco Observatory)

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