ACDS V10.0 - Detailed Description of VII/234

ACDS V10.0 - Mon Jan 20 00:52:46 CET 2025

| # Detailed Description of VII/234 : DENIS catalog of galaxies (Paturel+, 2003) |

Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.

    VII/234                   DENIS catalog of galaxies          (Paturel+, 2003)
    ================================================================================
    The provisional DENIS I-band catalog of galaxies revisited.
        Paturel G., Petit C., Rousseau J., Vauglin I.
       <Astron. Astrophys. 405, 1 (2003)>
       =2003A&A...405....1P
    ================================================================================
    ADC_Keywords: Galaxy catalogs ; Surveys ; Photometry, infrared ; Galaxies, IR

    Keywords: infrared: galaxies - catalogs - surveys

    Abstract:
        We present a new, extended and improved version of the provisional
        I-band catalog of DENIS galaxies. Galaxies not cross-identified with
        already known galaxies have been visually controlled using the DSS1
        images and, occasionally, the coordinates were remeasured. The typical
        accuracy of coordinates is about 2". The typical error on I-band
        magnitude is about 0.2mag. The final catalog gives the most common
        names, the J2000 coordinates, the I-band magnitude, the diameter, the
        axis ratio and the position angle for about 43000 galaxies.

        It covers roughly 67% of the southern hemisphere. It is homogeneously
        sampled up to I=14.5 mag. The data are also available via the LEDA
        database.

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × catalog.dat       74    42258   Provisional DENIS I-band catalog of galaxies

    See also:
               http://leda.univ-lyon1.fr : LEDA Home page
               B/denis : The DENIS database (Epchtein+, 1999)
        J/A+AS/135/133 : First DENIS I-band extragalactic catalog (Vauglin+ 1999)

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

       Bytes Format Units      Label    Explanations

       1-  3  A3    ---        ---      [PGC]
       4- 10  I7    ---        PGC      PGC number (LEDA database)
      13- 32  A20   ---        Name     Alternate name taken according to a
                                         hierarchy: NGC, IC, UGC, ESO, MCG etc...
          35  A1    ---        ---      [J]
      36- 37  I2    h          RAh      Right ascension (J2000) (1)
      38- 39  I2    min        RAm      Right ascension (J2000) (1)
      40- 43  F4.1  s          RAs      Right ascension (J2000) (1)
          44  A1    ---        DE-      Declination sign (J2000) (1)
      45- 46  I2    deg        DEd      Declination (J2000) (1)
      47- 48  I2    arcmin     DEm      Declination (J2000) (1)
      49- 50  I2    arcsec     DEs      Declination (J2000) (1)
      53- 57  F5.2  mag        Imag     Total DENIS I-band magnitude (2)
      60- 63  F4.2 [0.1arcmin] logDiam  ?=9.99 Apparent diameter in log10 scale (3)
      66- 69  F4.2  [-]        loga/b   ?=9.99 Axis ratio in log10 scale
                                           (log of major axis to minor axis)
      72- 74  I3    deg        PA       [0/180] Position angle in degrees,
                                          measured from the North to the East (4)

    Note (1): The standard deviation is less than 2 arcsec.

    Note (2): The zero-point of these magnitude is adjusted to the
          Mathewson system (Mathewson et al., 1992ApJS...81..413M)
          The standard deviation is about 0.2 mag.
    Note (3): This diameter is converted to the Mathewson system
          (1992ApJS...81..413M) at the isophote 23 I-mag/arcsec2, using
          linear log-log conversion.
    Note (4): Its value covers the range 0-180°. A few values exactly
        equal to zero are taken as 180°

    Acknowledgements: Georges Paturel patu@obs.univ-lyon1.fr

    ================================================================================
    (End)                                           Patrica Bauer [CDS]  07-Jan-2003