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S. Lilly (ETH Zurich)
Many of the present-day properties of galaxies appear to have been established between redshifts of z ~7 and z ~1, which represents the transition between the ``primordial'' Universe at higher redshifts and the ``mature'' Universe seen at z < 1. For instance, this is the epoch during which more than half of all the stars in the Universe were formed. However the details of how galaxies were assembled within this period, and the relative importance of different physical processes, remain quite unclear. Observations with the JWST should elucidate answers to many questions including the origins of the Hubble morphological sequence and of the galaxy scaling laws, the role of obscured ultraluminous infrared galaxies in galaxy evolution and the rate of chemical evolution of galaxies and of the gas surrounding them. The observations with JWST in this area that drive the performance of JWST will be described.
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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.