Mathematics – Logic
Scientific paper
Jul 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.460...87f&link_type=abstract
The Promise of the Herschel Space Observatory. Eds. G.L. Pilbratt, J. Cernicharo, A.M. Heras, T. Prusti, & R. Harris. ESA-SP 460
Mathematics
Logic
1
Galaxies: Formation, Stars: Formation, Missions: First
Scientific paper
The ESA FIRST mission, the first 4-m class observatory in space, will allow drastic improvements in mapping for faint sources with respect to previous far-IR telescopes, and will provide complementary spectral coverage with respect to major projects like NGST and ALMA. FIRST will be a powerful tool to investigate phases in the evolution of galaxies at long wavelengths, whose relevance has only recently been fully understood. The present contribution is aimed at revisiting the scientific case for deep cosmological surveys that will be performed with FIRST, in the light of recent discoveries by the Cosmic Background Explorer, the Infrared Space Observatory and large millimetric telescopes on ground. All these are showing that crucial phases in galaxy formation and evolution at high-redshifts can only be investigated at long wavelengths, in particular phases of enhanced activity of star formation, consequent to merging, bringing to the formation of galaxy spheroids. FIRST will be the only planned instrument for many years to come working in the far-IR with imaging capabilities comparable to those of optical telescopes on ground, allowing, in particular, to accurately measure the bolometric emission of galaxies and active nuclei at any redshifts. This will be essential when attempting to recover the history of baryon transformations, through both stellar thermonuclear reactions and gravitational accretion onto supermassive black holes.
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