Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/1/1129/

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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I/129               Parallaxes and Proper Motions near SGP   (Murray+ 1986)
================================================================================
A survey of trigonometric parallaxes and proper motions with the
UK Schmidt telescope - II. Astrometric and photometric data for a
complete sample of 6125 stars brighter than B=17.5, V=17.0 in the
South Galactic Cap.
     Murray C.A., Argyle R.W., Corben P.M.
    <Mon. Not. R. Astron. Soc. 223, 629 (1986)>
    =1986MNRAS.223..629M
================================================================================
ADC_Keywords: Galactic pole, south ; Parallaxes, trigonometric ;
              Proper motions ; Regional catalog

Description:
    The catalog contains 6125 stars brighter than B=17.5, V=17.0 in the
    south galactic cap. The data have been obtained using the UK Schmidt
    telescope between 1975 and 1981. The plates were measured on the
    GALAXY machine at RGO. External errors of the parallaxes range between
    -/+0.012 and -/+0.017 arcsec according to magnitude. Internal proper
    motion errors range from -/+0.006 and -/+0.008 arcsec. In addition to
    the positions, proper motions, and parallaxes, the photometric data
    include B and V.

Nomenclature Notes:
    The stars from this catalogue are named "RGO" followed by the number
    in "RGO" column of "catalog" file.

See also:
    J/AJ/103/514  (I colour and spectroscopic observations of the stars)

File Summary:
--------------------------------------------------------------------------------
 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
catalog.dat    131       6125    The Catalogue
--------------------------------------------------------------------------------

Byte-by-byte Description of file: catalog.dat
--------------------------------------------------------------------------------
   Bytes Format  Units    Label    Explanations
--------------------------------------------------------------------------------
   1-  5  I5     ---      Seq      [1/6125]+ Running Number
   7- 11  I5     ---      RGO      [46/17194] Serial number in RGO files
  13- 17  F5.2   mag      Bmag     (photographic)
  19- 23  F5.2   mag      Vmag     (photographic)
  25- 29  F5.2   mag      B-V      (photographic)
      31  I1     ---      q_RGO    [1/7]? Astrometric quality code (1)
  32- 33  I2     h        RAh      Right Ascension B1950 (hours)
  35- 36  I2     min      RAm      Right Ascension B1950 (minutes)
  38- 43  F6.3   s        RAs      Right Ascension B1950 (seconds)
      45  A1     ---      DE-      Declination B1950 (sign)
  46- 47  I2     deg      DEd      Declination B1950 (degrees)
  49- 50  I2     arcmin   DEm      Declination B1950 (minutes)
  52- 56  F5.2   arcsec   DEs      Declination B1950 (seconds)
  58- 64  F7.4   arcsec/a pmX      Proper motion in X  ("/y)
  66- 72  F7.4   arcsec/a pmY      Proper motion in Y  ("/y)
  74- 80  F7.4   arcsec   plx      Trigonometric parallax  (")
  83- 86  F4.2   arcsec   e_pos    Internal standard error of a position
                                     coordinate
  89- 94  F6.4   arcsec/a e_pm     Internal standard error of a proper motion
                                    component (pmX or pmY)
  96-101  F6.4   arcsec   e_plx    Internal standard error of trigonometric
                                     parallax  (plx)
 104-110  F7.2   a        Epoch    Mean epoch of observation
 112-114  I3     ---      chi2     Chi-squared (5 degrees of freedom) from
                                     combination of Series A and B
 117-122  F6.1   arcmin   Xpos     Standard coordinate X referred to
                                     RA= 0h 53m, Dec=-28.0deg (B1950)
 124-129  F6.1   arcmin   Ypos     Standard coordinate Y referred to
                                     RA= 0h 53m, Dec=-28.0deg (B1950)
     131  A1     ---      Rem      [*] An asterisk (*) in this column signifies
                                     a further identification in Table 9
--------------------------------------------------------------------------------
Note (1): The quality code is blank for satisfactory data;
    it takes otherwise the following basic values
     1 : Abnormal errors in Series B
     2 : Abnormal errors in Series A
     4 : Inconsistent results between the two Series
     The remaining codes are combinations of these (e.g. 3 = 1 + 2)
--------------------------------------------------------------------------------

Acknowledgments:
    We sincerely thank Drs C.A. Murray and R. Martin for having
    provided the magnetic tape version to CDS in November 1986.

Historical Notes:
  * November 1986: Tape provided by C.A. Murray (RGO) to CDS
  * 29-Jun-1993: First standardized description at CDS
================================================================================
(End)                                     Francois Ochsenbein [CDS]  02-Nov-1995

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