Title:

AEGIS: History and modes of star formation in field galaxies since z=1.4



Kai Noeske
UC Santa Cruz



Abstract:

The "All Wavelength Extended Groth Strip International
Survey" (AEGIS) combines DEEP2 Keck spectroscopy, HST
imaging, and panchromatic data from Spitzer, GALEX, Chandra,
and ground-based observatories.  I introduce AEGIS, and
present work on star formation histories of field galaxies
at z<1.4. Apparently, a gradual decline of star formation in
most galaxies, not a decrease of strong starbursts,
dominated the evolution of star formation, LIRG number
density, and comoving star formation rate density since
z~1. The evolution of star formation can be described by
gradual gas exhaustion, with longer timescales and a later
onset of major star formation in less massive galaxies. I
discuss these results in view of the global evolution of the
galaxy population, and the build-up of the Red Sequence.