the FIRST Survey, version 1999Jul (White+ 1999)

Details the FIRST Survey, version 1999Jul (White+ 1999) the FIRST Survey, version 1999Jul (White+ 1999)

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ycat.8059....0w&link_type=abstract

VizieR On-line Data Catalog: VIII/59. Originally published in: 1997ApJ...475..479W

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Radio Sources, Surveys

Scientific paper

The FIRST survey to produce Faint Images of the Radio Sky at Twenty centimeters began in 1993. It uses the VLA (Very Large Array, a facility of the National Radio Observatory (NRAO)) at a frequency of 1.4GHz, and it is slated to 10,000 deg2 to a sensitivity of about 1mJy with an angular resolution of about 5". The co-added images are available on the Internet (see the FIRST home page at http://sundog.stsci.edu/ for details). The source catalogue is derived from the images. This version of the FIRST Survey is derived from the 1993 through 1998 observations, and contains 549,707 sources covering the north and south Galactic caps. The catalog covers about a total of 6060 square degrees of sky (5450 square degrees in the north and 610 square degrees in the south). No new data were taken for the south Galactic cap from the preceding version (catalog ), but the southern images south of about -2 degrees were reprocessed with an improved pipeline script that substantially reduces the sidelobe levels in a small fraction of the fields. Consequently, many of the southern sources have slight changes in their positions, flux densities, and other properties; a small number of sources from the previous catalog are missing from this catalog. (1 data file).

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