Individual files can be fetched (via http) from here
or via ftp from: ftp://cdsarc.u-strasbg.fr/pub/cats/III/206

The catalogue can be queried from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=III/206

This standardized document follows the rules of the Standard Description for Astronomical Catalogues. For those having to work on this catalogue using FORTRAN programs, this ReadMe file can be transformed into a f77-compliant program which reads the files making up this catalogue, in two versions: either a f77 program loading whole files into arrays, or a f77-program reading each data file line by line.

III/206  13th General Catalogue of MK Spectral Classification  (Buscombe 1998)
================================================================================
MK spectral classifications, 13th General Catalogue, Epoch 2000,
including UBV photometry
     Buscombe W.
    <Northwestern Univ., Evanston, Illinois ISBN 0-939160-11-3 (1998)>
================================================================================
ADC_Keywords: Spectral types ; Photometry, UBV


Description:
   A file of MK spectral types and UBV photometry maintained at Dearborn
   Observatory is presented here. It is based on an extensive literature
   search. The annex files (various clusters and associations, and SMC)
   are from the revised 12th catalogue.

File Summary:

       FileName      Lrecl  Records   Explanations

× ReadMe            80        .   This file
× mk13.dat          80    19208   The 13th General Catalogue
× ic1805.dat        80       57   Data for IC1805
× ngc752.dat        80      125   Data for NGC 752
× ngc1977.dat       80      268   Data for Orion trapezium
× ngc3293.dat       80       41   Data for NGC 3293
× ngc6087.dat       80       38   Data for NGC 6087
× ngc6475.dat       80      161   Data for NGC 6475 (M 7)
× orion.dat         80      244   Data for Orion association
× scooph.dat        80      168   Data for upper Sco and Oph association
× smc.dat           80      935   Data for Small Magellanic Cloud


Byte-by-byte Description of file: *.dat

   Bytes Format Units   Label     Explanations

   1- 11  A11   ---     Id        Identification for star
  14- 15  I2    h       RAh       Right Ascension (2000) hour
  17- 20  F4.1  min     RAm      *?Right Ascension (2000) minute
      22  A1    ---     DE-       Declination sign
  23- 24  I2    deg     DEd      *?Declination (2000) degree
  26- 27  I2    arcmin  DEm      *? Declination (2000) minute
      28  A1    ---     u_DEm     [:] DEm uncertain
  30- 51  A22   ---     SpType    MK type
      52  A1    ---     n_SpType  [*] '*' for a standard
      53  A1    ---     n_Vmag    [B] 'B' when Vmag represents a B magnitude
  54- 58  F5.2  mag     Vmag      ? Johnson V magnitude
      59  A1    ---     u_Vmag   *[:m] Uncertainty or mean flag on Vmag
  60- 64  F5.2  mag     B-V       ? Johnson B-V color
      65  A1    ---     u_B-V    *[m] mean flag on B-V
  66- 70  F5.2  mag     U-B       ? Johnson U-B color
  75- 80  A6    ---     Name      Alternate identification, usually HD

Note on RAm, DEd, DEm:
     the columns RAm and DEd are blank only for a few stars in files
     ngc1977.dat and ngc6087.dat
Note on u_Vmag, u_B-V:
     The letter 'm' (for mean) is used for mean magnitude of variables
     (the magnitude is printed within angle brackets like <14.8>)


Acknowledgements:
    William Buscombe, Derborn Observatory 
================================================================================
(End)                                     Francois Ochsenbein [CDS]  10-Dec-1998