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[vsnet-id 721] Blanco M stars near NGC 6522



     A recent paper by Glass & Schultheis provides accurate coordinates for
all the 174 M giants close to NGC 6522 (Baade's window region) found by
Blanco.  These are present in SIMBAD but most of the stars are shown with no
coordinates.  Some have spectroscopic and photometric follow-up in later
work, but I think this is the first time that positions are given for all
the stars from this list.  Blanco's V magnitudes and spectral types are
already given in SIMBAD.  The on-line journal article has the table in a
cluttered html format, so here are the coordinates and some IDs.
     I matched the list against several astrometric catalogues, but because
of the extreme crowding it was not obvious to me that positions derived from
Schmidt plate-scans were obviously better than those by Glass & Schultheis.
Thus I retain here the original coordinates except where a star is present in
UCAC1.  One typo and one star ID were corrected.  I note that the printed and
on-line tables show Declination to 0".01 precision for the first 65 entries,
then reverts to arcsec precision after that.  (RA is always shown to 1"
precision.)  The new paper also shows lightcurves for many of the stars and
other analysis.
     In comparing with SIMBAD, I recognized that the coordinates for variables
in this field given in the big paper by Gaposchkin (1955PZ.....10..337G) are
completely erroneous.  One example will serve.  Using his chart, the RR Lyrae
[G55] 45 = V1426 Sgr is located at:

17 56 58.56 -30 02 49 (1900)
18 03 23.27 -30 02 47 (2000)  OGLE/MACHO variable lists

whereas for the same star Gaposchkin shows:

17 56 11 -29 57.4 (1900) Gaposchkin
18 02 35 -29 57.5 (2000)

No simple offset or precession error (for instance using the eq. 1875 of the
Cordoba or Cape catalogues) would yield a correction.  Unfortunately all the
Gaposchkin stars are present in SIMBAD, mostly with the bogus coordinates.

\Brian

-------------------------------------------------------------------------------

Coordinates and identifications for M giants near NGC 6522

sources:  1986AJ.....91..290B
          BLANCO V.M.
          Astron. J., 91, 290-292 (1986)
          Giants of type M1 or later in Baade's window.
          Dictionary: <[B86] NNN> (Nos 1-174)

          2002MNRAS.337..519G
          GLASS I.S. and SCHULTHEIS M.
          Mon. Not. R. Astron. Soc., 337, 519-528 (2002)
          M giants in MACHO, DENIS, and ISOGAL.
version:  21 Dec 2002

position sources (column 's'):
-  Glass & Schultheis originals
s  SkyView estimate (+/-2")
U  UCAC1  (2000AJ....120.2131Z, I/268)


[B86]   RA   (J2000)   Dec    s  remarks
  1   18 03 17.54 -30 01 26.2 U  
  2   18 03 17.7  -30 02 31.5 -  
  3   18 03 17.8  -30 02 29.5 -  NSV 24122
  4   18 03 18.1  -30 03 11.0 -  
  5   18 03 18.2  -30 01 28.6 -  
  6   18 03 18.3  -30 01 50.8 -  western star of close pair
  7   18 03 18.4  -30 02 35.2 -  
  8   18 03 18.66 -30 02 19.8 U  
  9   18 03 19.3  -30 03 18.9 -  
 10   18 03 19.5  -30 03 15.8 -  
 11   18 03 20.0  -30 01 10.4 -  
 12   18 03 20.2  -30 00 41.2 -  
 13   18 03 20.6  -30 01 46.3 -  
 14   18 03 21.0  -30 02 43.2 -  
 15   18 03 21.2  -30 01 50.5 -  
 16   18 03 21.5  -30 04 19.2 -  
 17   18 03 21.54 -30 03 21.0 U  
 18   18 03 21.8  -29 59 47.0 -  
 19   18 03 21.9  -30 03 52.3 -  
 20   18 03 21.9  -29 59 23.4 -  
 21   18 03 21.8  -30 01 21.6 -  
 22   18 03 22.0  -30 04 30.0 -  
 23   18 03 22.30 -30 00 39.3 U  
 24   18 03 22.3  -30 02 56.1 -  
 25   18 03 22.78 -30 03 08.1 U  
 26   18 03 23.0  -30 03 19.6 -  
 27   18 03 23.7  -30 02 10.5 -  
 28   18 03 23.9  -30 00 05.8 -  
 29   18 03 23.9  -30 03 20.1 -  
 30   18 03 23.9  -30 00 48.0 -  
 31   18 03 23.9  -29 59 25.7 -  
 32   18 03 24.09 -30 02 05.2 U  
 33   18 03 24.3  -30 01 42.2 -  
 34   18 03 24.40 -30 04 16.1 U  
 35   18 03 24.5  -30 04 39.1 -  
 36   18 03 25.1  -29 56 16.8 -  
 37   18 03 25.12 -30 01 21.3 U  
 38   18 03 25.2  -29 59 48.3 -  
 39   18 03 25.7  -29 58 47.0 -  
 40   18 03 26.9  -30 01 45.5 -  
 41   18 03 26.9  -30 04 25.8 -  
 42   18 03 27.1  -30 03 08.5 -  
 43   18 03 27.06 -30 02 10.9 U  
 44*  18 03 27.1  -29 59 04   s  
 45   18 03 27.2  -30 01 03.3 -  NSV 24134
 46   18 03 27.31 -30 04 34.7 U  
 47   18 03 27.4  -30 02 25.8 -  
 48   18 03 27.6  -30 04 21.9 -  
 49   18 03 27.7  -30 00 56.3 -  
 50   18 03 27.7  -30 00 17.8 -  
 51   18 03 28.2  -29 58 58.4 -  
 52   18 03 28.2  -30 04 10.6 -  
 53   18 03 28.8  -30 02 27.5 -  
 54   18 03 29.2  -30 02 49.0 -  
 55   18 03 29.2  -30 03 23.8 -  
 56   18 03 29.3  -30 05 43.7 -  
 57   18 03 29.3  -29 59 39.7 -  NSV 24138
 58   18 03 29.47 -30 05 34.4 U  
 59   18 03 29.6  -30 05 08.7 -  
 60   18 03 30.0  -30 03 14.9 -  
 61   18 03 30.0  -29 58 21.5 -  
 62   18 03 30.5  -29 58 35.7 -  GSC 6854-3448
 63   18 03 30.6  -30 00 51.0 -  
 64   18 03 30.7  -30 00 28.1 -  
 65   18 03 31.0  -29 59 02.6 -  NSV 24143
 66   18 03 31.7  -30 00 44   -  
 67   18 03 31.6  -29 59 11   -  
 68   18 03 31.88 -30 04 09.5 U  
 69   18 03 32.0  -30 00 29   -  
 70   18 03 32.3  -30 04 44   -  
 71   18 03 32.3  -30 03 32   -  
 72   18 03 32.8  -29 59 39   -  
 73   18 03 33.2  -30 05 08   -  
 74   18 03 33.2  -30 04 41   -  
 75   18 03 33.3  -30 05 23   -  
 76   18 03 33.24 -29 59 11.4 U  V1436 Sgr
 77   18 03 33.7  -30 03 31   -  
 78   18 03 33.74 -30 03 57.3 U  
 79   18 03 33.9  -29 59 22   -  
 80   18 03 34.1  -30 05 17   -  
 81   18 03 34.1  -29 59 59   -  
 82   18 03 34.4  -30 00 17   -  northwestern star of close pair
 83   18 03 35.0  -29 59 49   -  
 84   18 03 35.1  -30 05 25   -  
 85   18 03 35.1  -29 59 09   -  
 86   18 03 35.2  -29 58 13   -  
 87   18 03 35.3  -30 00 01   -  
 88   18 03 35.7  -30 04 39   -  
 89   18 03 35.6  -30 04 00   -  
 90   18 03 35.83 -30 05 23.4 U  
 91   18 03 35.8  -29 58 35   -  
 92   18 03 36.0  -29 58 58   -  
 93   18 03 36.0  -30 00 22   -  
 94   18 03 36.5  -30 00 40   -  
 95   18 03 36.9  -30 03 31   -  
 96   18 03 36.97 -29 58 47.5 U  
 97   18 03 38.47 -30 04 15.9 U  
 98   18 03 38.9  -30 04 38   -  
 99   18 03 38.9  -30 03 35   -  
100   18 03 39.0  -29 59 53   -  
101   18 03 39.0  -29 58 26   -  
102   18 03 39.3  -29 59 50   -  
103   18 03 39.6  -29 58 24   -  
104   18 03 39.7  -30 00 52   -  
105   18 03 39.7  -29 58 48   -  
106   18 03 40.5  -30 03 28   -  
107   18 03 40.4  -29 59 11   -  
108   18 03 40.8  -29 59 58   -  
109   18 03 41.25 -30 05 03.4 U  
110   18 03 41.3  -30 03 00   -  
111   18 03 41.3  -29 59 53   -  
112   18 03 41.5  -29 59 21   -  
113   18 03 41.8  -30 04 39   -  
114   18 03 42.2  -30 02 39   -  
115   18 03 42.2  -30 01 13   -  
116   18 03 42.5  -30 04 59   -  
117   18 03 42.6  -30 03 37   -  
118   18 03 42.6  -30 02 50   -  NSV 24162
119   18 03 42.65 -30 00 06.9 U  
120   18 03 42.7  -29 58 59   -  
121   18 03 43.2  -29 58 42   -  G&S +1deg Dec error
122   18 03 43.4  -30 03 24   -  
123   18 03 43.5  -29 59 57   -  
124   18 03 43.8  -30 05 17   -  
125   18 03 43.81 -30 00 45.1 U  
126   18 03 44.0  -30 02 21   -  V1450 Sgr
127   18 03 44.3  -30 03 43   -  
128   18 03 44.48 -29 59 29.0 U  
129   18 03 45.1  -30 04 57   -  
130   18 03 45.1  -29 58 47   -  
131   18 03 45.5  -30 05 18   -  
132   18 03 45.3  -30 01 33   -  
133   18 03 45.47 -30 03 00.6 U  NSV 24166
134   18 03 45.5  -30 04 33   -  
135   18 03 45.2  -30 00 40   -  
136   18 03 45.47 -30 00 09.3 U  
137   18 03 46.2  -30 02 24   -  V1452 Sgr
138   18 03 46.0  -29 59 13   -  
139   18 03 46.54 -30 03 54.3 U  
140   18 03 46.39 -30 00 48.4 U  
141   18 03 46.45 -30 01 37.9 U  
142   18 03 46.59 -30 02 27.4 U  
143   18 03 46.81 -30 02 45.2 U  
144   18 03 46.90 -30 02 03.6 U  
145   18 03 47.36 -30 02 10.0 U  
146   18 03 47.46 -30 03 37.2 U  
147   18 03 47.43 -30 01 22.3 U  
148   18 03 47.6  -30 04 06   -  
149   18 03 47.6  -29 59 16   -  
150   18 03 48.9  -30 01 33   -  
151   18 03 48.0  -30 00 38   -  
152   18 03 48.2  -30 01 03   -  
153   18 03 48.6  -30 00 33   -  
154   18 03 48.5  -29 59 47   -  
155   18 03 49.07 -29 59 35.5 U  
156   18 03 49.64 -30 03 41.1 U  
157   18 03 49.4  -29 59 41   -  
158   18 03 49.8  -30 01 35   -  
159   18 03 49.9  -30 02 23   -  
160   18 03 49.9  -30 03 00   -  
161   18 03 50.12 -30 03 14.7 U  
162   18 03 50.5  -30 02 20   -  
163   18 03 50.9  -30 01 52   -  
164   18 03 51.1  -30 00 14   -  
165   18 03 51.09 -30 00 36.9 U  
166   18 03 51.19 -30 01 43.0 U  GSC 7391-1885
167   18 03 51.22 -30 01 21.1 U  
168   18 03 51.5  -30 01 00   -  
169   18 03 52.0  -30 02 02   -  
170   18 03 52.1  -30 03 03   -  
171   18 03 52.2  -30 03 33   -  
172   18 03 52.6  -30 01 23   -  
173   18 03 52.9  -30 01 59   -  
174   18 03 53.4  -30 02 08   -  


Notes
 44   northern/fainter star of ~3" pair (G&S position is for southern star).

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