Faint Source Catalog
The Faint Source Survey (FSS) is the definitive IRAS data set for
faint point sources. The FSS was produced by point-source filtering
the individual detector data streams and then coadding those data
streams using a trimmed-average algorithm. The resulting images, or
plates, give the best estimate from the IRAS survey data of the point
source flux density at every surveyed point of the sky. The Faint
Source Catalog (FSC) is a compilation of the sources extracted from
the FSS plates that have met reasonable reliability
requirements. Averaged over the whole catalog, the FSC is at least
98.5% reliable at 12 and 25 microns, and ~94% at 60 microns. For
comparison, the IRAS Point Source Catalog
(PSC) is > 99.997% reliable, but the sensitivity of the FSC exceeds that
of the PSC by about a factor of 2.5. The FSC contains data for 173,044
point sources in unconfused regions with flux densities typically greater
than 0.2 Jy at 12, 25, and 60 microns and greater than 1.0 Jy at 100
microns.
Sources with SNR > 3 but which do not meet the reliability requirements of
the FSC are cataloged in the Faint Source Reject File
(FSR). The FSR contains data for 593,516 sources. Moshir et al. (1992)
describe the processing methods used to produce the FSR and give
cautionary notes about its interpretation.
This catalog for sources with |b| > 10° is available on the
ADC Selected
Astronomical Catalogs, Volume 1 CD-ROM and via the
ADC
FTP server.
Reference:
Moshir, M. et al. 1992, Explanatory Supplement to the IRAS Faint
Source Survey, version 2, JPL D-10015 8/92 (Pasadena: JPL).
Version and release date: 2.0, 1990 Sept
See the format of the Catalog
ADF/IRAS page