Astronomy and Astrophysics – Astronomy
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.3319a&link_type=abstract
American Astronomical Society Meeting 204, #33.19; Bulletin of the American Astronomical Society, Vol. 36, p.702
Astronomy and Astrophysics
Astronomy
Scientific paper
Ultraluminous Infrared Galaxies (ULIRGs) have power outputs rivalling quasars, yet they emit nearly all of their energy in the mid and far-infrared. Both starbursts and dust-enshrouded AGN have been implicated as the power sources in ULIRGs. While rare in the local Universe, ULIRGs may play a dominant role in producing the far-infrared background as well as the star formation energy density at high redshifts. We are conducting a large survey with the IRS on Spitzer to obtain spectra of over 100 ULIRGs with redshifts of 0.02 < z < 0.80. We will present the first results from this survey, concentrating on the superb sensitivity of the IRS for uncovering hidden AGN, measuring warm molecular gas, and detecting organic ices in the nuclei of these remarkable galaxies.
Appleton Ph.
Armus Lee
Bernard-Salas Jeronimo
Brandl Berhard
Burgdorf Martin
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