Catalogue of APM optical counterparts to the FIRST catalog

Catalog of APM optical counterpart to FIRST sources
(FIRST version Jul, 21st 1999). 87,311 APM sources
within 2.5" of FIRST source.
Eran O. Ofek (July 2000).


Counterpart.txt.gz
==================
87,311 optical counterparts from the APM catalog
to FIRST sources.


Catalogue Description :

Start-  Format  space  Description
Col       
------  ------  -----  -----------------------------------------------------
  1     f11.7   1      R.A. (J2000) of FIRST radio source [radians]
 13     f11.7   1      Dec. (J2000) of FIRST radio source [radians]
 25     f9.2    2      FIRST peak radio flux in 20cm [mJy]
 36     f5.1    3      Distance between FIRST-radio and APM-optical
                       counpterpart source. If more then
                       one optical object found within 2.5" of
                       the radio position, the nearest object
                       is listed. [arcsec]
 44     f11.6   1      R.A. (J2000) of APM optical counterpart [radians]
 56     f11.6   1      Dec. (J2000) of APM optical counterpart [radians]
 68     f6.2    1      APM E magnitude.
 75     i2      1      APM E class.
                       {-1 0 1 2}={stellat, noise, non-stellar, merged}
 78     f5.1    1      APM E semi-major axis of ellipse [0.5 arcsec units]
 84     f4.2    1      APM E eccentricity of ellipse
 89     i3      2      APM E P.A. of ellipse [deg]
 94     f6.2    1      APM O magnitude.
101     i2      1      APM O class.
                       {-1 0 1 2}={stellat, noise, non-stellar, merged}
104     f5.1    1      APM O semi-major axis of ellipse [0.5 arcsec units]
110     f4.2    1      APM O eccentricity of ellipse
115     i3      5      APM O P.A. of ellipse [deg]
123     i3      3      Number of optical counterpart to the radi source
                       within 2.5"
129     i2      0      APM-catalog {0 1}={POSS1, UKST}


Errors.txt.gz
=============
3741 FIRST sources that for them the APM catalog is not
available (June 2000).

Start-  Format  space  Description
Col       
------  ------  -----  -----------------------------------------------------
1       f11.7   2      R.A. of FIRST source [radians].
13      f11.7   3      Dec. of FIRST source [radians].



Pairs.txt.gz
============
List of 54,866 FIRST sources with optical counterpart within 2.5"
that have optical pair up to 40" from the radio-optical source.

 
Start-  Format  space  Description
Col       
------  ------  -----  -----------------------------------------------------
  1     f11.7   1      R.A. (J2000) of APM optical counterpart [radians]
 13     f11.7   1      Dec. (J2000) of APM optical counterpart [radians]
 25     f9.2    2      FIRST peak radio flux in 20cm [mJy]
 36     f4.1    1      Distance between FIRST-radio and APM-optical
                       counpterpart source. If more then
                       one optical object found within 2.5" of
                       the radio position, the nearest object
                       is listed. [arcsec]
 41     i3      2      Number of optical counterpart to the radi source
                       within 2.5"
 46     f6.2    1      APM E magnitude of radio-optical counterpart
 53     i2      3      APM E class of radio-optical counterpart
                       {-1 0 1 2}={stellat, noise, non-stellar, merged}
 58     f6.2    1      APM O magnitude of radio-optical counterpart
 65     i2      3      APM O class of radio-optical counterpart
                       {-1 0 1 2}={stellat, noise, non-stellar, merged}
 70     f11.7   1      R.A. (J2000) of APM pair to radio-optical object.
                       [radians]
 82     f11.7   1      Dec. (J2000) of APM pair to radio-optical object.
                       [radians]
 94     f6.2    1      APM E magnitude of optical pair
101     i2      1      APM E class of optical pair
104     f6.2    1      APM O magnitude of optical pair
111     i2      3      APM O class of optical pair
116     i2      0      APM-catalog {0 1}={POSS1, UKST}