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[vsnet-alert 7766] (fwd) More on the LMC variable (Liller)



Date: Sat, 21 Jun 2003 12:59:21 -0400
From: "W.Liller" <wliller@compuserve.com>
Subject: More on the LMC variable

Hola everyone -

Here are some low-quality CCD observations of the variable that I picked up
in the LMC:

LMC variable    20030619.972    12.10CR         LIL     unfiltered CCD,
through clouds
LMC variable    20030620.958    12.15V          LIL     Through clouds
LMC variable    20030620.969    13.35B          LIL     Through clouds

All values have uncertainties of +/-0.2 magnitudes.  However, the star is
definitely too red to be a nova in the LMC.  With B-V ~= 1.2, it would
seem, following Brian Skiff's comments, to be something like a K-giant or
supergiant.

A quick check of the coordinates of the variable confirms Berto Monard's
position to +/- 1.5"

I have not yet had a chance to look at the many archival photographs
(approx. 300) that I have of the region, but I do notice that on the very
best of my LMC photos, there is a faint star at the position of the
variable, probably about mag 14.5.

Now we need some genius to tell us how a giant K- (or G-) star can suddenly
erupt some 3 magnitudes.  Could it be a symbiotic star?

Is there any chance that someone can get a spectrum?

All the best,  Bill Liller


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