[vsnet-chat 1970] (fwd) V735 Sgr, reply from Samus

[Taichi Kato <tkato>]

From samus@sai.msu.ru Tue Jun 15 17:14 JST 1999
Date: Tue, 15 Jun 1999 12:13:41 +0400 (MSD)
From: "Nikolai N. Samus" <samus@sai.msu.ru>
To: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
cc: jmanek@mbox.vol.cz
Subject: Re: Correct identification of V735 Sgr?

Dear Dr. Kato,

I have looked into the details of the V735 Sgr problem. The most reliable
charts, from the point of view of the star's history, must be the
photograph in Harvard Annals, Vol. 109, No. 1, 1940 (HV 9175) and the
chart in Leiden Annals, Vol. 20, No. 1, 1948 (No. 82). Unfortunately, the
scale of the Harvard photograph is too bad for any reliable
identification. Plaut's chart in Leiden Annals seems to lead to the pair
whose southern star is marked in the photograph published by Vogt and
Bateson later. However, the chart does not completely exclude other
identifications; by the way, the A2.0 star at 17h59m51s.807,
-29deg33'39".07, 2000 is suspiciously blue (mblue = 15.7, mred = 16.5),
only slightly to the north (so in no contradiction with Plaut's chart),
strangely bright in A2.0 compared to DSS, so it could be a promising
identification idea...

Please keep the GCVS team informed about further findings!

Concerning the list of Luyten stars, I completely agree with Jan Manek,
his list of identifications exactly coincides with that we have in
Moscow.

Best regards
Kolya 

On Mon, 14 Jun 1999, Taichi Kato wrote:

> Correct identification of V735 Sgr?
> 
>    Does nayone know the correct identification of V735 Sgr?  This potential
> UG star was identified by "outburst photometry" by Vogt and Bateson (1982),
> As. Ap. Sup. 48, 383.  They cited Brun and Petit chart (1959, Perem. Zvezdy
> 12, 18) as incorrect.  The apparent difficulty in accessing the original
> discovery material has made correct identification difficult, in such
> a crowded area.  I wonder whether the variable has been monitored for
> outbursts.
> 
> Regards,
> Taichi Kato
>

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