we propose to search for galaxies at high (zvirgul1) and ultra-high (zvirgul5) redshifts using isocam at 15um. in random fields the sensitivity of iso is sufficient only to see the most extreme objects at these redshifts, which are very unlikely to be found in the small areas that can be searched. we propose instead to use rich galaxy clusters as magnifiers of the background field at high z to potentially increase the effective sensitivity by 1-2 orders of magnitude. with a magnification factor m=5-10, we will be able to detect moderately luminous galaxies at z=1 in the rest frame 6-9um pah band. at z=5, we may be sensitive to the near-ir emission from galaxies with ir luminosities substantially below those of the more luminous objects in the local universe.
Instrument
CAM01
Temporal Coverage
1997-04-20T03:20:07Z/1997-04-20T09:51:15Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the world's first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
