Far Infrared Observations of Distant Galaxies with SPECS

Details Far Infrared Observations of Distant Galaxies with SPECS Far Infrared Observations of Distant Galaxies with SPECS

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.1803w&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #18.03; Bulletin of the American Astronomical Society, Vol. 31, p.855

Astronomy and Astrophysics

Astronomy

Scientific paper

Observations of galaxies with background limited far infrared single dish instruments in space are confusion limited after short integration times. One way to use this sensitivity is to scan the sky rapidly to survey a large solid angle with short integration times, as is planned by the IRIS experiment on the ASTRO-F satellite. But SPECS will use this sensitivity to perform interferometric observations that will spread the confusing forest in three dimensions: two spatial angles and the redshift. This will allow detailed studies of individual objects at large distances and redshifts. The Guiderdoni et al. model counts flatten to a slope well below Euclidean at log (N) = 8.7 with N in sources per steradian at a 175 mu m flux of 160 mu Jy. But an aperture greater than 10 meters is needed to study sources at this density, so counting out the cosmic infrared background detected by DIRBE will require an interferometer like SPECS.

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