[vsnet-newvar 1658] Re: [vsnet-chat 5593] New Variables (TbrV0031]

["Mati Morel" <morel@ozemail.com.au>]

Back in the late 1980s Robert McNaught carried out a photographic patrol
using an 85mm telephoto lens, from Siding Spring Observatory.  Aside from
nova discoveries, he detected a number of new variables. Some have never
been published anywhere.  Anyway, Rob sent me his discovery notes and
identification sketches for about a dozen such stars.  I have run Rob's list
past the list of 50 new stars found by Vello Tabur.  There is only one star
common to both lists, which is TbrV0031. Rob's field notes leave no doubt,
and I reproduce them here.

TbrV0031.    RH McN  notes :     1986 Dec. 23/24  mag  = 11 (approx)
                                                     1987 Dec. 24/25 mag   =
10 (approx)
    <The star has a companion of about 12mag to the NE, dist. about 6".
    Star was confirmed var. on ESO R6377 -bright, and UKST R3994.
    Looks fainter on ESO B1346 than UKST J2194.>

My own checking confirms that TbrV0031 = CPD-51 4492 = CoD-51 6072.
(Note that CPD and CoD declinations are off by 12" and18" respectively.)
Examination of DSS red images confirm 12 mag companion to the NE.
CoD-51 6073 is a puzzling entry. According to the CoD it follows 6072 by
only
0.4s, but is unlikely to refer to the 12mag companion, which is too close
and faint
to be measurable separately for the CoD. Most likely it is a duplicate
observation
of -51 6072.

Regards,
Mati Morel

morel@ozemail.com..au

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