Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/7/7031B/

The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:

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2. Get the data files via anonymous FTP. (See Note.) [ftp


VII/31B     Star Clusters/Associations. I. Associations         (Ruprecht+ 1982)
================================================================================
Catalogue of Star Clusters and Associations, Supplement 1, Associations
    Ruprecht J., Balazs B., White R.E.
    <Akademiai Kiado, Publ. House Hungarian Acad. Sciences, Budapest (1981)>
    =1981csca.book.....R
    <Bull. Inform. CDS 22, 132 (1982)>
    =1982BICDS..22..132R
================================================================================
ADC_Keywords: Bibliography ; Associations, stellar

Description:
   The catalog contains data and bibliographical citations for all 70
   associations of the second edition of the "Catalogue of Star Clusters and
   Associations (CSCA)" edited by Alter et al. (1970) which includes data
   for open clusters, associations, globular clusters and extragalactic
   objects up to 1967 and "Supplement to the CSCA" by Ruprecht et al. (1982),
   which contains the supplementary data up to the end of 1973.  Thus, the
   literature is covered through 1973.  The catalog includes the years of the
   literature, references, authors, abbreviated journal references, diameters,
   distances and color indices of the associations, number of stars and
   spectral types of the stars in the associations, and identification of the
   Palomar Observatory Sky Survey Chart on which the association appears.

File Summary:
--------------------------------------------------------------------------------
 FileName       Lrecl  Records    Explanations
--------------------------------------------------------------------------------
ReadMe             80        .    This file
assoc.dat          87       89    List of associations and their positions
names.dat         124       86    Designations of each association
refs.dat          139     3308    Bibliography with parameters by reference
--------------------------------------------------------------------------------

See also:
   VII/5 : Excerpt of the Catalogue (catalogue)
   VII/44 : Part II (Globular clusters, catalogue)
   VII/101 : Part III (Open Clusters, catalogue)

Byte-by-byte Description of file: assoc.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  8  A8     ---     Assoc    Association number starting with ASS
  10- 15  A6     ---     Page     ?Card (or page) number of the second edition
                                    (missing for ASS-3)
  17- 24  A8     ---     Name     Other name of the association
  26- 31  F6.2   deg     GLON     [0/360[?+= Galactic longitude (1)
  33- 38  F6.2   deg     GLAT     [-90/90]? Galactic latitude (1)
  42- 43  I2     h       RAh      [0/24[? Right Ascension 1950 (hours) (1)
  45- 48  F4.1   min     RAm      [0/60[? Right Ascension 1950 (minutes) (1)
      50  A1     ---     DE-      Declination 1950 (sign) (1)
  51- 52  I2     deg     DEd      [0/90[? Declination 1950 (degrees) (1)
  54- 55  I2     arcmin  DEm      [0/60[? Declination 1950 (minutes) (1)
  59- 76  A18    ---     POSS     Palomar Sky Survey chart with its RA and Dec
  80- 82  I3     mm      X        ? Position on the chart
                                    from lower left corner
  84- 86  I3     mm      Y        ? Position on the chart
                                    from lower left corner
--------------------------------------------------------------------------------
Note (1): the position was added at CDS for additional associations, i.e.
          ASS names with decimal figures. These positions have generally
          less accuracy.
          Note also that the last association ASS-70 has no position:
          it lays over tens of degrees.


Byte-by-byte Description of file: names.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  2  I2     ---     Num      Association number
   3-  4  F2.1   ---     m_Num    ?Association number suffix (e.g. .1 for 50.1)
  11-114  A104   ---     Desig    List of association designations used by 
                                   various authors
 117-124  A8     ---     Page     ?Card (or page) number of the second edition
                                    (missing for ASS-3)
--------------------------------------------------------------------------------

Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  2  I2     ---     Num      Association number
   3-  4  F2.1   ---     m_Num    ?Association number suffix (e.g. .1 for 50.1)
   6-  9  I4     yr      Year     Year of the literature reference
  12- 25  A14    ---     Author   Author Name
  27- 42  A16    ---     ref     *Literature reference
  43- 50  A8     arcmin  AD       ?Apparent diameter of the association
  52-141  A90    ---     Misc    *Aggregated data and notes
--------------------------------------------------------------------------------
Note on ref:
    (1) = DIE ENTSTEHUNG VON STERNEN,SPRINGER,BERLIN
    (2) = ATLAS OF COL-MG DIAGR.,SUPPLEMENT,MOSCOW
    (3) = PR.UN.PB.S2,N37-40,32
    (4) = PR.UN.PB,S2,N37-40,34
    (5) = CAN.J.R.A.S,46,222
    (6) = WIEN.AN,29,N3 (PUP I,II)

Note on Misc:
    The aggregated data and notes combined into the the Misc column do not
    follow a strict column structure.  For many records, the notes start
    at the beginning of this field (byte 52).  Other records contain some
    or all of the following subfields loosly adhering to the byte ranges
    shown:
         52- 55      DIST: Distance of the association (pc)
         57- 60        LD: Linear diameter of the association (pc)
         65- 67         N: Number of stars in the association
         69- 74        MG: Type of photometric magnitudes
         76- 81        CI: Color index of the association
         83- 87        SP: Spectra
         88- 92         P: Positions
         94-141      NOTE: Notes
   
Remarks and Modifications:
     The original catalog contained multiple record formats in one file.
     The file "names.dat" has been created from the first record per 
     association. The file "assoc.dat" has been created from second records; 
     missing positions were filled with approximative values found in the
     literature.  The file "refs.dat" was created from the third and following
     records for each association.

References:
   Alter G., Balazs B., and Ruprecht J., 1970, Catalogue of Stellar
      Clusters and Associations, 2nd edition, Akademiai Kiada, Budapest,
      printed in Hungary
   Ruprecht J., Balazs B. and White R.E., 1982, Catalog of Star Clusters
      and Associations, Supplement 1, Vols. I-III, Bull. Inform. CDS, no. 22, 
      p. 132
================================================================================
(End)                                    James E. Gass  [SSDOO/ADC]  13-Feb-1998

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