z=1-3 ULIRGs from the Spitzer SWIRE survey (Berta+, 2007)
We present Keck/LRIS optical spectroscopy of 35 z>=1.4 luminous IR galaxies in the Spitzer Wide-area Infra-Red Extragalactic survey (SWIRE) northern fields (Lockman Hole, ELAIS-N1, ELAIS-N2). The primary targets belong to the "IR-peak" class of galaxies, having the 1.6{mu}m (restframe) stellar feature detected in the IRAC Spitzer channels. The
Berta, S. et al.
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2007