[vsnet-chat 4509] Liller's var in LMC = LMC V2434

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

----- Original Message -----
Sent: Friday, June 08, 2001 2:26 P
Subject: Liller's var in LMC  (with minor corrections).


> Hi All,
>         Bill Liller's latest discovery in the LMC is a known variable,
with
> a fairly extensive history.  It is LMC V2434. A potted history follows.
> K. Henize (ApJ Suppl 22, 1956) recorded it as S162 (emission line star).
He
> remarks : "Continuum appears reddish. Perhaps a late-type star?"
> Bohannon and Epps (1974) in their survey of LMC emission line stars,
record
> it as BE577.
> J.P. Brunet et al (Astron. Astrophys. Suppl. 21, 109-136, 1975) record it
as
> Brunet156, spectrum Be.
> R.M. Humphreys (ApJ Suppl39, 389-403, 1979),  calls it Blanco72, a
foreground
> star and a long period variable. Data given:
> V = 12.90
> B-V = 1.47
> V-R = 1.68
> V-I = 3.24
> Spect.: M2e III
>
> Also known as Case 48-8. Humphreys notes it as a LPV with hydrogen and Ca
II
> H and K in emission.
>
> LMC V2434 = GSC 9166.00775  at (2000)  5h24m1.6s  -71'35.6".  Lies a
> little west of W Men, but a selection of closer comparison stars is given
> here.
> HDE          RA 2000     DEC 2000        V   B-V    U-B    Quality
> 269479    5:23:22.4    -71:05:34        10.59  0.41  -0.03      2
> ...........     5:23:22.0    -71:11:40        13.68  0.08   0.23       2
> 269488    5:23:43.8    -71:11:58        12.21  0.64   0.10       2
> ...........     5:23:49.1    -71:03:34        12.33  0.62   0.22       2
> 269493    5:24:01.7    -71:18:23        11.93  0.65   0.12       2
> 269495    5:24:12.8    -71:09:12        10.48  1.02   0.76       2
> 269498    5:24:23.3    -71:01:57        12.11  0.89   0.70       2
> 269507    5:24:47.9    -71:01:38        10.97  1.27   1.29       2
> ............    5:25:17.1    -71:02:51        11.78  1.10   1.00       2
> 269538    5:25:57.0    -70:58:15          9.84  0.53  -0.01       2
>
> The pe data is taken from Gochermann et al ( A & A Suppl 99,591, 1993) and
> subsequent papers.  The quality rating indicates more reliable data -2 or
> more obs. per star, as distinct from a rating of "1" (only one obs.)
>
> The data seems to indicate a Z And type star, yes?  The magnitude of 9.8
> observed by Bill seems to be far outside the range previously observed for
> this star.
>
> Cheers,
> Mati
> ++++++++++++++++++++++++++++++++++
> Morel Astrographics
> *Charts*Variable Star Studies* Specialized charts*
> email: morel@ozemail.com.au
> Web: http://vsnet.ozemail.com.au/~morel
> ++++++++++++++++++++++++++++++++++
>
>
>
>
>

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