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J/ApJS/89/85        Blue and red supergiants in M33   (Ivanov+ 1993)
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A catalog of blue and red supergiants in M33.
       Ivanov G.R., Freedman W.L., Madore B.F.
      <Astrophys. J. Suppl. Ser. 89, 85 (1993)>
      =1993ApJS...89...85I      (SIMBAD/NED BibCode)
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ADC_Keywords: Photometry, UBV ; Stars, blue ; Stars, supergiant
Keywords: catalogs - galaxies: individual (M 33) - galaxies: stellar content -
          supergiants - techniques: photometric

Description:
    We present a catalog of blue and red stars in M33 based on
    photographic photometry of over 65,000 objects extracted from plates
    taken with the 3.6m Canada-France-Hawaii Telescope (CFHT) and the 2.0m
    Rozhen (Bulgarian) Telescope. The completeness limit of the various
    surveys are estimated here to be V=19.5mag for those stars situated in
    crowed associations, and V=20.0mag for stars in the interarm fields.
    We list magnitudes and positions for 2112 blue stars, defined by
    (U-V)<0.0mag, and V<19.5mag, and 389 red stars defined by (B-V)>1.8mag
    and V<19.5mag. Of these, 1156 are candidate O stars on the basis of
    (U-V)<-0.9mag.

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table2.dat         70     2112   Catalog of blue stars in M 33
table3.dat         45      389   A catalog of red stars in M33
table4.dat         58       61   The bright blue stars in M33 with V < 17.0
table5.dat         58       43   A subset of multiple objects from Table 2
table6.dat         58      101   A subset of nonstellar objects from Table 2
table7.dat         58       36   A subset of candidate WR stars from Table 2
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Byte-by-byte Description of file: table2.dat table4.dat table5.dat table6.dat
Byte-by-byte Description of file: table7.dat
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   Bytes Format Units   Label     Explanations
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   1-  4  I4    ---     IFM-B     [1/2126] += Running number assigned according
                                   to increasing right ascension
       5  A1    ---   m_IFM-B     Multiplicity index on IFM-B
   7-  8  I2    h       RAh       Right ascension (1950.0)
  10- 11  I2    min     RAm       Right ascension (1950.0)
  13- 16  F4.1  s       RAs       Right ascension (1950.0)
      18  A1    ---     DE-       Declination sign
  19- 20  I2    deg     DEd       Declination (1950.0)
  22- 23  I2    arcmin  DEm       Declination (1950.0)
  25- 26  I2    arcsec  DEs       Declination (1950.0)
  28- 32  F5.2  mag     Vmag      Photographic V magnitude
  34- 38  F5.2  mag     B-V       B-V colour index
  40- 44  F5.2  mag     U-B       U-B colour index
  46- 54  A9    ---     Rem       Remarks (1)
  56- 58  I3    ---     Assoc.    ? Number of the OB association in which the
                                     object can be found
  60- 61  I2    ---     Assoc.2   ? Second association number when the object
                                     is in two ones
  63- 70  A8    ---     Fig       Number of figures (Figs 5-11; Figs12-22) on
                                   which the object can be identified
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Note (1):  B: a blue star as catalogued and numbered in
               Humphreys & Sandage (1980ApJS...44..319H
           n: nonstellar (probably a cluster or H II region in M 33
           M: multiple object
          WR: candidate Wolf-Rayet star
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Byte-by-byte Description of file: table3.dat
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   Bytes Format Units   Label     Explanations
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   1-  3  I3    ---     IFM-R     Sequential number
   5-  6  I2    h       RAh       Right ascension (1950.0)
   8-  9  I2    min     RAm       Right ascension (1950.0)
  11- 14  F4.1  s       RAs       Right ascension (1950.0)
  16- 17  I2    deg     DEd       Declination (1950.0)
  19- 20  I2    arcmin  DEm       Declination (1950.0)
  22- 23  I2    arcsec  DEs       Declination (1950.0)
  25- 29  F5.2  mag     Vmag      Photographic V magnitude
  31- 34  F4.2  mag     B-V       B-V colour index
  36- 40  A5    ---     Rem       Remarks (1)
  42- 45  A4    ---     Fig       Number of figures on which the object can be
                                   identified
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Note (1):  R: a red star as catalogued and numbered in
               Humphreys & Sandage (1980ApJS...44..319H)
           Q: Object of unknown nature Humphreys & Sandage (1980ApJS...44..319H)
           B: a blue star as catalogued and numbered in Humphreys & Sandage
                (1980ApJS...44..319H)
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Acknowledgements: Barry Madore <barry@ipac.caltech.edu>
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(End)                                         Patricia Bauer  [CDS]  12-Nov-1996