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III/52  Third General Catalogue of MK Spectral Classification    (Buscombe 1977)
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MK Spectral Classifications, Third General Catalogue.
   Buscombe W.
   <Northwestern Univ. (1977)>
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ADC_Keywords: Spectral types ; Photometry, UBV

Description:
   This is the third in a series of catalogs of MK spectral types and UBV
   photometry issued from Dearborn Observatory.  It is based on an extensive 
   literature search.  Each catalog in the series is essentially self-contained,
   with a separate selection of stars.

File Summary:
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 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
catalog.dat     83      21870    The Catalogue
refs.dat        65        156    List of References
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See also:
   III/189 : 7th-11th Catalogues of MK Spectral Classification (Buscombe+ 1994)
   III/223 : 12th General Catalog of MK Spectral Classification (Buscombe 1995)
   III/206 : 13th General Catalog of MK Spectral Classification (Buscombe 1998)
   III/222 : 14th General Catalog of MK Spectral Classification (Buscombe 1999)

Byte-by-byte Description of file: catalog.dat
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   Bytes Format  Units   Label    Explanations
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   1- 12  A12    ---     Name     Name of the star (default HD)
  14- 15  I2     h       RAh      [0/24[? Right Ascension 2000 (hours)
  17- 20  F4.1   min     RAm      [0/60[? Right Ascension 2000 (minutes)
      23  A1     -       DE-      Declination 2000 (sign)
  24- 25  I2     deg     DEd      [0/90[? Declination 2000 (degrees)
  27- 28  I2     arcmin  DEm      [0/60[? Declination 2000 (minutes)
  30- 50  A21    ---     MK       MK spectrum
  51- 53  I3     ---     r_MK     ?Reference number for spectral type
      55  A1     ---     Note     [*]
  56- 61  F6.3   mag     V        []? V-magnitude
  62- 67  F6.3   mag     B-V      []? B-V
  68- 73  F6.3   mag     U-B      []? U-B
  75- 77  I3     ---     refUBV   ?Reference number for UBV photometry
  78- 83  A6     ---     Notes    Notes
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Byte-by-byte Description of file: refs.dat
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   Bytes Format  Units   Label    Explanations
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   1- 3   I3      ---    Refnum   Reference number
   5-65   A61     ---    Ref      Reference
--------------------------------------------------------------------------------

History: 
   * 14-Feb-1994: Several hundreds errors corrected including misalignments,
     wrong positions, etc. (CDS) 
   * 29-Aug-2001: This catalog was incorrectly listed as superseded by the 
     Twelfth General Catalog of MK Classifications in April 1997.  It was 
     reingested with this revised ReadMe. (N. Odegard, ADC) 
================================================================================
(End) F. Ochsenbein [CDS]  14-Feb-1994, rev. N. Odegard [SSDOO/ADC]  29-Aug-2001