Detailed Description of Catalogue VII/9/

Url: http://astro.u-strasbg.fr/cgi-bin/Cat?VII/9/

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VII/9               Lynds' Catalogue of Bright Nebulae    (Lynds 1965)
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Catalogue of bright nebulae
     Lynds B.T.
    <Astrophys. J. Suppl. Ser. 12, 163 (1965)>
    =1965ApJS...12..163L
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ADC_Keywords: Nebulae ; H II regions

Description:
    The Catalogue of Bright Nebulae lists the galactic and equatorial
    coordinates of the center of the cloud, the dimensions of the nebulae
    as measured on the photograph on which it appeared at its brightest,
    the area of nebulosity in square degrees, color as compared between
    the blue and red Palomar plates, a brightness index on a scale of 6,
    an identification number that indicates the complexity of the
    nebulosity, and a cross reference to NGC (Cat. <VII.1>), Index
    Catalogue (IC), Sharpless (1959) Catalogue of HII Regions (Cat.
    VII/20), Cederblad (1956) Catalogue of Diffuse Galactic Nebulae,
    and Dorschner and Gurtler (1963).

File Summary:

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  FileName      Lrecl  Records   Explanations

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ReadMe             80        .   This file
catalog.dat        68     1125   The LBN Catalogue

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

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   Bytes Format  Units   Label    Explanations

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   2-  5  I4     ---     Seq      [1/1125]+ Running number (1)
   7- 12  F6.2   deg     GLON     [0/360[+= Galactic longitude of cloud center
  14- 19  F6.2   deg     GLAT     Galactic longitude of the cloud center
  21- 22  I2     h       RAh      Hours RA, 1950.0
  24- 25  I2     min     RAm      Minutes RA, 1950.0
      28  A1     ---     DE-      Sign Dec, 1950.0
  29- 30  I2     deg     DEd      Degrees Dec, 1950.0
  32- 33  I2     arcmin  DEm      Minutes Dec, 1950.0
  36- 39  I4     arcmin  Diam1    Largest dimension of nebula
  41- 43  I3     arcmin  Diam2    Smallest dimension of nebula
  45- 51  F7.3   deg2    Area     Area of nebulosity
      53  I1     ---     Color    [1/4] Color index (2)
      55  I1     ---     Bright   [1/6] Brightness scale (3)
  57- 59  I3     ---     ID       Identification number (4)
  61- 68  A8     ---     Name     Other name of nebulosity (5)

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Note (1): This number represents the sequence in the published paper;
     see also the History below.
Note (2): The following codes are used for Color:
     '1' if brighter on blue Palomar plate;
     '2' if equal on red and blue Palomar plates;
     '3' if brighter on red Palomar plate;
     '4' if visible only on the red Palomar plate.
    This parameter is zero only for the two nebulae
        
Note (3): the brightness scale varies from '1' (brightest) to
          '6' (barely detectable).
    This parameter is zero only for the sane two nebulae
        
Note (4): ID indicates whether or not the object
     is an isolated region (=0)
     or a region of different brightness located in a more extensive
          complex of nebulosities.
Note (5): Abbreviations are
    NGC = New General Catalogue (NGC, cat. VII/1)
    IC  = Index Catalogue
    S   = Sharpless HII Regions (Sh 2-), 1959, Cat. VII/20
    C   = Catalogue of Diffuse Galactic Nebulae, Cederblad 1959,
          Medd. Lund Ser.2, No 119
    DG  = Dorschner and Gurtler 1963, AN 287, 257

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History:
  * The catalogue is extracted (in June 1994) from the CD-ROM of NASA/ADC
    "Selected Astronomical Catalogs Vol. 1" with the following corrections:
    - #582 (118.25+04.84) (shifted column)
    - Nebulae with identical central positions where checked against
      the publication and reordered according to the published catalogue.
      The following galactic central positions refer to 2 or more
      nebulae:
        007.03-02.26  008.44+36.18  011.54+36.11  014.12+00.06
        020.36-01.27  021.10-00.60  078.21+02.48  084.28-01.32
        084.81+03.88  085.58+04.24  112.16+00.23  118.25+04.84
        123.88-01.93  166.39-23.63  169.24-00.94  184.36-28.85
        189.78-13.76  194.69-15.60  204.44-00.56  204.60-13.66
        206.39-01.87  206.90-16.56  208.69-02.51  243.16+00.32
        353.76+17.61
  * The first "Seq" column, a number which is now found in the
    literature, was added at CDS in December 1996.

References:
  Cederblad, S. 1956, Medd. Lund, Ser. 2, No. 119
  Sharpless, S. 1959, ApJS, 6, 257 (Catalog VII/20)
  Dorschner, J., and Gurtler, J. 1963, AN, 287, 257
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(End)                                    Francois Ochsenbein [CDS]   16-Dec-1996

CDS Catalogue Service