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J/A+AS/117/467      Image of Galaxies data-base II.  (Garnier+ 1996)
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An image database. II. Catalogue between {delta}=-30deg and {delta}=70deg.
     Garnier R., Paturel G., Petit C., Marthinet M.C., Rousseau J.
    <Astron. Astrophys. Suppl. Ser. 117, 467 (1996)>
    =1996A&AS..117..467G   (SIMBAD/NED BibCode)
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ADC_Keywords: Galaxy catalogs
Keywords: galaxies: general - catalogue - galaxies: photometry

Abstract:
    A preliminary list of 68.040 galaxies was built from extraction of
    35.841 digitized images of the Palomar Sky Survey (Paper I,
    1996A&A...311...12P). For each galaxy, the basic parameters are
    obtained: coordinates, diameter, axis ratio, total magnitude, position
    angle. On this preliminary list, we apply severe selection rules to
    get a catalog of 28.000 galaxies, well identified and well documented.
    For each parameter, a comparison is made with standard measurements.
    The accuracy of the raw photometric parameters is quite good despite
    of the simplicity of the method. Without any local correction, the
    standard error on the total magnitude is about 0.5 magnitude up to a
    total magnitude of B_T_=17. Significant secondary effects are detected
    concerning the magnitudes: distance to plate center effect and
    air-mass effect.
    The description of the construction of the catalog is given in Paturel
    et al. 1996 and Garnier et al. 1996. Galaxies are detected on POS-I
    and cross-identified with galaxies from the LEDA database
    (http://www-obs.univ-lyon1.fr/leda/)

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
catalog            80    22497   The Catalogue
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See also:
  VII/155 : Third Reference Catalog of Bright Galaxies (de Vaucouleurs+ 1991)
  VII/119 : Catalogue of Principal Galaxies (PGC)   (Paturel+ 1989)
  http://www-obs.univ-lyon1.fr/leda/ : The LEDA database

Byte-by-byte Description of file: catalog
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   Bytes Format Units      Label   Explanations
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   1-  6  I6    ---        PGC     Name according to Paturel et al. (1989,
                                     Cat. <VII/119>)
   9- 22  A14   ---        Name    Alternate name in a hierarchy (1)
  24- 25  I2    h          RAh     Right ascension for 1950
  26- 27  I2    min        RAm     Right ascension for 1950
  28- 31  F4.1  s          RAs     Right ascension for 1950
      32  A1    ---        DE-     Declination sign
  33- 34  I2    deg        DEd     Declination for 1950
  35- 36  I2    arcmin     DEm     Declination for 1950
  37- 38  I2    arcsec     DEs     Declination for 1950
      39  A1    ---      n_Pos     [*] *: Accurate coordinates better than 10"
  42- 45  F4.0  deg        PA      ? Position angle from North Eastwards
  47- 49  F3.0  deg      e_PA      ? rms uncertainty on PA
  52- 56  F5.2  mag        BT      Total B-magnitude in the RC3 system
                                    (de Vaucouleurs et al. 1991, Cat. <VII/155>)
  58- 60  F3.2  mag      e_BT      rms uncertainty on BT
  63- 66  F4.2 0.1arcmin   logD25  Decimal log of apparent diameter in the RC3
                                    system (up to the isophote 25mag/arcsec^2^)
  68- 70  F3.2 0.1arcmin e_logD25  rms uncertainty on logD25
  73- 76  F4.2  ---        logR25  Decimal log of axis ratio
                                    (major axis/ minor axis) in the RC3 system
  78- 80  F3.2  ---      e_logR25  rms uncertainty on logR25
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Note (1): NGC, IC, UGC, ESO, MCG, CGCG (see Paturel et al. 1989, Cat. <VII/119>)
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References:
  de Vaucouleurs G., de Vaucouleurs A., Corwin H.G. Jr, Buta R.J., Paturel G.,
   Fouque P., 1991, Third Reference Catalog of Bright Galaxies, Springer-Verlag
   (RC3), Cat. <VII/155>
  Garnier R., Paturel G., Petit C., Marthinet M.C., Rousseau J.,
                                                             1996A&AS..117..467G
  Paturel G., Fouque P., Bottinelli L., Gouguenheim L., 1989A&AS...80..299P,
                                                                  Cat. <VII/119>
  Paturel G., Fouque P., Bottinelli L., Gouguenheim L., 1989b, Catalog of
   Principal Galaxies, Monographies de la Base de Donnees Extragalactiques No1,
   vol. 1,2,3, Observatoire de Lyon (updated version in 1996 on CD-ROM)
  Paturel G., Garnier R., Petit C., Marthinet M.C.,          1996A&A...311...12P


Acknowledgements: We thank G. Paturel <paturel@obs.univ-lyon1.fr>
    for providing a copy of the catalog.
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(End)                                        Patricia Bauer  [CDS]   24-Mar-1997