|Written by Administrator|
|Friday, 18 April 2008 12:14|
Dust is a most important and effective tracer of the global structural, physical and evolutionary conditions of the ISM material throughout the whole life-cycle of a galaxy. From diffuse interstellar cirrus to dense molecular clouds, from protostars to post-AGB envelopes, from supershells to supernovae remnants, the equatorial plane of our Galaxy provides the ideal laboratory to carry out investigations of the global and integrated properties of the different phases of the Galactic ISM, their evolution and interactions.
In combination with complementary and already available surveys both in the continuum at adjacent wavelengths, and in atomic and molecular gas tracers, Hi-GAL will allow to address fundamental issues:
Hi-GAL will allow significant advances in all these issues, enabling decisive steps toward the formulation of a global predictive model of the ISM/star formation cyclic transformation process which is the engine responsible for most of the energy budget in normal star-forming galaxies. It will be a cornerstone to unveil the evolution of galaxies through redshift back to their formation.
|Last Updated on Monday, 23 June 2008 20:13|