I/277               SPM Catalog 2.0                          (Platais+ 1998)
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Yale/San Juan Southern Proper Motion Program:
-20 to -40{deg} zones including the South Galactic Pole Region
     Platais I., Girard T.M., Kozhurina-Platais V., van Altena W.F., Lopez C.E.,
     Mendez R.A., Ma W.-Z., Yang T.-G., MacGillivray H.T., Yentis D.J.
    <Astron. J. 116, 2556 (1998)>
    =1998AJ....116.2556P
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ADC_Keywords: Positional data ; Proper motions ; Photometry, photographic ;
              Photometry, CCD
Keywords: astrometry - catalogs - stars: kinematics

Description:
    The SPM Catalog 2.0 provides positions, absolute proper motions and
    photographic BV photometry for over 320,000 stars and galaxies. The
    Catalog covers an area of ~3700 square degrees in an irregularly
    bounded band between declinations of -43 and -22 degrees, with a
    slight extension near the South Galactic Pole, but excluding fields in
    the plane of the Milky Way. Stars cover the magnitude range 5<V<18.5.
    The standard errors for the best measured stars are as follows: 20 mas
    for positions in each coordinate; 2mas/yr for absolute proper motions
    and 0.05mag for B and V magnitudes. Standard error estimates of
    positions, absolute proper motions and magnitudes are given for each
    individual object. In addition to the Catalog, a list of CCD
    calibrating sequences is provided.

    Note that all fields (and objects) contained in the 1.0 version of the
    Catalog are also included in this version. The values of the
    astrometric parameters for these objects, however, may be different
    due to refinements in the reduction procedure, (i.e. the SGP fields
    were re-reduced for inclusion in the SPM catalog 2.0).

File Summary:
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 FileName    Lrecl  Records   Explanations
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ReadMe          80        .   This file
readme.ori      80      374   Original description
spmcat.dat     129   321608   Catalog of positions, proper motions and BV
                               photographic photometry in the area around the
                               South Galactic Pole
spmccd.dat      42     7783   A list of CCD photometry used for magnitude
                               calibration in the SGP area
spmfld.dat      63      156   Basic information on the SPM fields/plates used
                               to create the Catalog
spmids.txt      31   262150   Cross-identifications with special catalogs and
                               object numbers for the selected samples of stars
spmpar.txt      33       71   A list of parameters used to make identifications
                               with special catalogs
spmspe.txt      79       77   A list of all special catalogs and selected
                               samples of stars
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See also:
   I/177 : Catalogue of proper motions in NGC 752 (Platais, 1992)
   I/178 : Catalogue of proper motions in NGC 7209 (Platais, 1992)
   I/203 : Proper Motions, UBV-Phot. Spectral Class Region 7092 (Platais 1994)
   I/212 : Proper motions in NGC 3680 (Kozhurina-Platais+, 1995)
   J/AJ/122/1486 : NGC 2451A proper motions and membership (Platais+, 2001)

Byte-by-byte Description of file: spmcat.dat
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   Bytes Format Units    Label Explanations
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   1-  8  I8    ---      SPM   Object identifier (1)
  10- 11  I2    h        RAh   Right ascension for the epoch J1991.25 and in
                                the ICRS reference system (i.e. equinox 2000)
  13- 14  I2    min      RAm   Right ascension for the epoch J1991.25 and in
                                the ICRS reference system (i.e. equinox 2000)
  16- 21  F6.3  s        RAs   Right ascension for the epoch J1991.25 and in
                                the ICRS reference system (i.e. equinox 2000)
      23  A1    ---      DE-   Declination sign (2000)
  24- 25  I2    deg      DEd   Declination for the epoch J1991.25 and in the
                                ICRS reference system (i.e. equinox 2000)
  27- 28  I2    arcmin   DEm   Declination for the epoch J1991.25 and in the
                                ICRS reference system (i.e. equinox 2000)
  30- 34  F5.2  arcsec   DEs   [0/60] Declination for the epoch J1991.25 and in
                                the ICRS reference system (i.e. equinox 2000)
  36- 45  F10.6 deg      RAdeg Right ascension in decimal degrees, ICRS system
                                for the epoch J1991.25
  47- 56  F10.6 deg      DEdeg Declination in decimal degrees, ICRS system
                                for the epoch J1991.25
  57- 60  I4    mas    e_RAdeg Estimated standard error in right ascension
                                multiplied by cos(DEC).
  61- 64  I4    mas    e_DEdeg Estimated standard error in declination
  66- 72  F7.1  mas/yr   pmRA  Absolute proper motion in right ascension
                                multiplied by cos(DEC).
  74- 80  F7.1  mas/yr   pmDE  Absolute proper motion in declination
  81- 85  F5.1  mas/yr e_pmRA  Estimated standard error in right ascension's
                                absolute proper motion.
  86- 90  F5.1  mas/yr e_pmDE  Estimated standard error in declination's
                                absolute proper motion.
  92- 96  F5.2  mag      Vmag  ?=0.00 Photographic V-magnitude
                                (if missing then set to 0.00)
  98-102  F5.2  mag      Bmag  ?=0.00 Photographic B-magnitude
                                (if missing then set to 0.00)
 104-108  F5.2  mag      B-V   ?=0.00 B-V color (if either of V or B is missing
                                then set to 0.00).
 109-111  I3   0.01mag e_Vmag  Estimated standard error in V- magnitude
 112-114  I3   0.01mag e_Bmag  Estimated standard error in B- magnitude
     118  I1    ---      Nfie  Number of SPM fields on which the object was
                                measured.
 120-121  I2    ---    o_Bmag  Number of images used in astrometric reductions
                                from a blue plate in each epoch (2)
 123-124  I2    ---    o_Vmag  Number of images used in astrometric reductions
                                from a visual plate in each epoch (2)
     126  A1    ---      F1    [HT] Flag "H" indicates a Hipparcos star;
                                    flag "T" indicates a Tycho star if it is
                                     not already a Hipparcos star
     127  A1    ---      F2    [GKQ] Selection flag (3)
     128  A1    ---      F3    [AS] Specific flag (4)
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Note (1): First three digits indicate the SPM field number. The remaining
     digits are the running number in the SPM input file.
Note (2): Each first and second order grating-image pair counted as one image
Note (3): the flags have the following meaning:
     Flag "G" indicates visually confirmed galaxy;
     Flag "K" indicates a randomly selected star.
          Note that star selections 011 and 054 also share that flag;
     Flag "Q" indicates a possible QSO drawn from the following special
          catalogs: 022,027,042,052 (see spmspe.txt).
Note (4): the flags have the following meaning:
     Flag "S" indicates a special star taken from a selected catalog or list.
     Flag "A" indicates a star which was chosen in some specified area down
           to a specified magnitude limit.
          This includes special catalogs: 012,024,037,050,055 (see spmspe.txt).
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Byte-by-byte Description of file: spmccd.dat
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   Bytes Format Units   Label     Explanations
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   1-  8  I8    ---     SPM       Object number (1)
  10- 19  F10.6 deg     RAdeg     Right ascension (J2000) (2)
  21- 30  F10.6 deg     DEdeg     Declination (J2000) (2)
  32- 36  F5.2  mag     Vmag      V-magnitude from CCD photometry
  38- 42  F5.2  mag     B-V       B-V color from CCD photometry
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Note (1): First three digits indicate the SPM field number.
     The remaining digits are the running number in the SPM input file.
Note (2): Positions for the epoch 1991.25 and in the ICRS reference system
     (copied from the Catalog file spmcat.dat)
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Byte-by-byte Description of file: spmfld.dat
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   Bytes Format Units      Label  Explanations
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   1-  3  I3    ---        SPM    The SPM field number (1)
   5-  6  I2    h          RAh    Field center right ascension (J2000)
   8-  9  I2    min        RAm    Field center right ascension (J2000)
  11- 15  F5.2  s          RAs    Field center right ascension (J2000)
      17  A1    ---        DE-    Sign of declination (J2000)
  18- 19  I2    deg        DEd    Field center declination (J2000)
  21- 22  I2    arcmin     DEm    Field center declination (J2000)
  24- 27  F4.1  arcsec     DEs    Field center declination (J2000)
  32- 41  A10 "DD/MM/YYYY" DATE1  First epoch blue-plate exposure date
  44- 45  A2    ---        GR1    [EW NS] Grating image orientation on first
                                   epoch blue plates (East-West or North-South)
  50- 59  A10 "DD/MM/YYYY" DATE2  Second epoch blue-plate exposure date
  62- 63  A2    ---        GR2    [EW NS] Grating image orientation on second
                                   epoch blue plates (East-West or North-South)
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Note (1): In this file the basic data are provided for each of the
    selected 156 SPM fields. However, the Catalog's object numbers may
    contain some adjacent SPM field numbers which are not presented in
    this file. This is because in the field overlap area the object ID is
    assigned based on the field with the nearest plate center. This
    procedure will ensure consistency in the numbering system with
    adjacent fields incorporated in future versions of the Catalog.

    SPM fields for which the exposure date of visual plates is different
    from the blue plate. The field centers at the equinox B1950 can be
    found in Platais et al. (1998A&A...331.1119P).
     ------------------------------------------------------------------
      Field     Date 1            Date 2
     ------------------------------------------------------------------
      385                        30/07/1987  NS
      459       22/09/1998  EW
      600       21/09/1968  EW
      420                         7/02/1997  EW
      449       21/09/1968  EW
      515        8/08/1969  EW
      516                         5/09/1996  NS
      525       30/07/1968  EW
      526       20/09/1968  EW
      569                        21/02/1993  NS
     ------------------------------------------------------------------
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History:
    Copied at http://www.astro.yale.edu/astrom

References:
 Girard et al., 1998AJ....115..855G
   "The Southern Proper Motion Program. I. Magnitude equation correction"

 Platais et al., 1998A&A...331.1119P
  "The Hipparcos proper motion link to the extragalactic reference system using
    NPM and SPM"

 Platais et al., 1998AJ....116.2556P
  "The Southern Proper Motion Program. II. A Catalog at the South Galactic Pole"

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(End)                                        Patricia Bauer [CDS]   15-Jan-2002