phot will be used at 60, 90 and 160 micron, and cam at 12 micron to investigate the spectral energy distributions (seds) of 5 or 6 distant radio galaxies at redshifts of 2.3 to 4.3. the seds will provide insight into the nature of the far-ir emission of the most distant known galaxies, when the universe was only 10 percent of its present age. the seds will allow us to study the ubiquity of dust, and therefore processed material in these young objects, the luminosity of the dust emission and the temperatures of the emitting dust components. derived color temperatures will allow an assessment of the relative importance of the active nucleus and of possible starbursts in producing the observed emission. the results will have consequences for such topics as heavy element production, the early evolution and formation of galaxies, and the role of strong starbursts in the early universe. the cam observations will probe hot dust associated with an obscured quasar nucleus predicted to exist by unified models of quasars and radio galaxies. iso provides the only way of probing the temperature-sensitive wien part of the blackbody curve. measurements to be obtained with the new scuba bolometer array at the jcmt will complement the seds at long wavelengths. we have the largest sample of distant radio galaxies available, from which we have selected the best candidate sources. the targets are all z > 2 galaxies with detected co, submm continuum emission, or other evidence for the presence of copious neutral gas. the data will provide a unique view of the neutral inter- stellar (and probably starforming) interstellar medium in the most distant galaxies known to us.
Instrument
CAM01 , PHT32
Temporal Coverage
1996-04-07T14:55:31Z/1998-01-03T22:24:06Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds 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.
European Space Agency, MILEY et al., 1999, 'DUST IN THE MOST DISTANT RADIO GALAXIES: SPECTRAL ENERGY DISTRIBUTIONS AND LUMINOSITIES.', 1.0, European Space Agency, https://doi.org/10.5270/esa-4rmmoxx
