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J/MNRAS/275/591        Outer regions of Galactic Bulge        (Ibata+, 1995)
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The Outer Regions of the Galactic Bulge: I. Observations.
       IBATA R.A., GILMORE G.
      <Mon. Not. R. Astron. Soc. 275, 591 (1995)>
      =1995MNRAS.275..591I   (SIMBAD/NED Reference)
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ADC_Keywords: Photometry, photographic ; Radial velocities ; Abundances, [Fe/H]
Keywords: stars: abundances - stars: Population II - Galaxy: abundances -
          Galaxy: kinematics and dynamics - Galaxy: stellar content -
          galaxies: evolution

Description:
    Digitized UK Schmidt plate photometry, calibrated with CCD photometry,
    is obtained in 18 regions over the Bulge. Stars are selected for
    spectroscopic follow-up from with a carefully chosen colour-magnitude
    window, optimized for efficient detection of bulge K giants. Some 1500
    stellar spectra are obtained with the AAT AUTOFIB facility. We derive
    a radial velocity and metallicity for each star, and quantify the
    uncertainties in these measurements. Luminosity classification is
    derived both by visual classification and by using an automated
    routine based on Principal Component Analysis. There are two basic
    results from this survey: the discovery of the Sagittarius dwarf
    galaxy described by Ibata, Gilmore and Irwin (1994Natur.370..194I),
    and a study of the Galactic Bulge by Ibata and Gilmore
    (1995MNRAS.275..605I)
    The catalogue contains coordinates, photometry, radial velocities,
    luminosity classification and chemical abundances for approximately
    1500 stars in lines of sight towards the Galactic Bulge.
    A detailed description of the selection of these stars, the methods
    used to derive the data, and the reliability of the data, is presented
    in the paper.

File Summary:
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 FileName    Lrecl    Records    Explanations
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ReadMe          80          .    This file
main            77       1509    The resulting catalogue
obs             28       1851    Individual observations
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Byte-by-byte Description of file: main
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   Bytes Format  Units   Label    Explanations
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   1-  6  A6     ---     Name     Star Name
   9- 10  I2     h       RAh      Right Ascension B1950 (hours)
  12- 13  I2     min     RAm      Right Ascension B1950 (minutes)
  15- 19  F5.2   s       RAs      Right Ascension B1950 (seconds)
      21  A1     ---     DE-      Declination B1950 (sign)
  22- 23  I2     deg     DEd      Declination B1950 (degrees)
  25- 26  I2     arcmin  DEm      Declination B1950 (minutes)
  28- 31  F4.1   arcsec  DEs      Declination B1950 (seconds)
  34- 39  F6.2   deg     GLON     Galactic longitude
  41- 46  F6.2   deg     GLAT     Galactic latitude
  48- 52  F5.2   mag     B-R      ? Photographic photometric colour
  55- 59  F5.2   mag     Rmag     [14/16]? R-band photographic magnitude
  62- 67  F6.1   km/s    RVel     Mean heliocentric velocity
      70  A1     ---     SpClass  [dKMC] spectral class (1)
  73- 77  F5.2   Sun     [Fe/H]   ? mean [Fe/H] where repeat data exist
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Note (1): d=dwarf, K=K giant, M=M giant, C=Carbon
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Byte-by-byte Description of file: obs
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   Bytes Format  Units   Label    Explanations
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   1-  6  A6     ---     Name     star name
   9- 10  I2     ---     Obs      [89/93] Year of spectroscopic observation
                                    (offset 1900)
  13- 18  F6.1   km/s    RVel     Measured heliocentric velocity
      21  A1     ---     SpClass  [dKMC] spectral class (1)
  24- 28  F5.2   Sun     [Fe/H]   ? Derived metallicity [Fe/H]
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Note (1): d=dwarf, K=K giant, M=M giant, C=Carbon
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Courtesy: Gerry Gilmore  <gil@ast.cam.ac.uk>
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(End)                Gerry Gilmore [ROE], Francois Ochsenbein [CDS]  15-Mar-1995