II/68               Dearborn Catalogue of faint red stars (Lee+ 1947)
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Dearborn Observatory Catalogue of faint red stars
     Lee O.J., Baldwin R.J., Hamlin D.W.
    <Ann. Dearborn Obs., vol. V, part 1A (1943)>
     Lee O.J., Bartlett T.J.
    <Ann. Dearborn Obs., vol. V, part 1B (1944)>
     Lee O.J., Gore G.D., Baldwin T.J.
    <Ann. Dearborn Obs., vol. V, part 1C (1947)>
    =1947AnDea...1....5L
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ADC_Keywords: Stars, faint ; Stars, late-type ;


Description:
    The Dearborn Survey is the result of a survey of faint red stars
    conducted at the Dearborn Observatory from about 1932 to 1947. It
    covers the declination range -4.5deg to +90deg (54% of the Sky), and
    consisted of over 1800 direct plates and spectrograms carrying single
    or multiple exposures varying from a second to 4 hours. The magnitudes
    in the catalog were obtained from direct plates mostly sensitive in
    the 0.55-0.64µm wavelength region. The spectral types were obtained
    from objective-prism plates with red-sensitive emulsion, and were
    classified on the visibility of the TiO bands.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
catalog.dat       36    44076   The Dearborn Observatory catalog
notes.dat         80      101   Notes to the catalog


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

   Bytes Format Units   Label    Explanations

   1-  5  I5    ---     DO       [1/44076]+ Dearborn number
       6  A1    ---     n_DO    *[#*] a note exists in the file "notes.dat"
   7-  8  I2    h       RAh      Right Ascension 1900 (hours)
  10- 13  F4.1  min     RAm      Right Ascension 1900 (minutes)
      15  A1    ---     DE-      Declination 1900 (sign)
  16- 17  I2    deg     DEd      Declination 1900 (degrees)
  19- 20  I2    arcmin  DEm      Declination 1900 (minutes)
  23- 26  F4.1  mag     Rmag    *? Magnitude on red-sensitive emulsion
      27  A1    ---     n_Rmag  *[?*V] Uncertainty and variability flag
  29- 32  A4    ---     SpType   Dearborn spectral type
  34- 36  A3    ---     HDtype  *Spectral type from HD (catalog <III/135>)

Note on n_DO: the '#' indicates a note from the original catalogue,
     while the '*' indicates a note added at NASA Goddard Space Flight
     Center by Nagy (1979)
Note on Rmag: the magnitude was obtained through comparison with the
     International Polar Sequence; its accuracy was estimated to 0.2mag.
Note on n_Rmag: the following flags are used:
    * denotes an approximate value (parentheses around the magnitude in
      the published version)
    V for known variables
    ? for suspected variables
Note on HDtype: only 5764 stars (13%) are in HD.



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

   Bytes Format Units   Label     Explanations

   1-  5  I5    ---     DO        [1/44076]+= Dearborn number
       6  A1    ---     Cont      [+] Indicates that there is a continuation
                                      in the next record
   8- 80  A73   ---     Text      Text of note


Nomenclature Notes:
    Stars from this survey are designated sometimes as "DC" (Dearborn
    Catalogue) in the literature. The acronym "DO" (Dearborn Observatory)
    is recommended to designate the stars from this survey.

History:
  * August 1979 (Nagy, 1979):
    The Dearborn Observatory Catalogue of Faint Red Stars has been made
    machine-readable at the Goddard Space Flight Center and Wellesley
    College (Mrs. Sawyer, Whitin Observatory). All of the data in this
    catalogue has been keypunched, proofread and transferred to magnetic
    tape.
  * 11-Jan-1997: at CDS (Francois Ochsenbein), the declination of DO 1007
    was corrected, and the original value of 99.9 Rmag reported for variables
    was changed to a 'V' flag.
    The notes mentioned in Nagy (1979) document were reported in the
    file "notes".
    This standardized document was added.

References:
  Nagy, T.A., 1979, "Documentation of the machine-readable version of
    the Dearborn Observatory Catalogue of Faint Red Stars",
    NASA ref R-SAW-8/79-01
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(End)                                     Francois Ochsenbein [CDS]  11-Jan-1997