What Powers the z~2 Spitzer ULIRGs in the First Look Survey

Details What Powers the z~2 Spitzer ULIRGs in the First Look Survey What Powers the z~2 Spitzer ULIRGs in the First Look Survey

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2210y&link_type=abstract

Chandra Proposal ID #08700521

Mathematics

Logic

Chandra Proposal Id #08700521

Scientific paper

We propose an exploratory program of 5x30ksec to target ~16 z~2 ULIRGs, recently discovered with Spitzer mid-IR spectroscopy. Their mid-IR spectra and redshifts indicate these are heavily obscured systems; are (1-2) dex brighter than local ULIRGs; and are likely to contain a significant AGN component. Combined with our Spitzer data, the proposed X-ray observations will constrain the AGN contribution to the bolometric luminosity, and the true SFR density at z~2. More importantly, it will test the possible connection between ULIRGs and QSOs at z~2, and whether our ULIRGs are a distinct population missed in sub-mm surveys; both results have significant cosmological implications. Finally, our results will set tighter constraints on the volume density of type II QSOs

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