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Paper: Hyperluminous Infrared Galaxies
Volume: 357, The Spitzer Space Telescope: New Views of the Cosmos
Page: 229
Authors: Verma, A.
Abstract: At the extreme end of the IRAS 60μm luminosity function lie hyperluminous infrared galaxies (HyLIGs). With luminosities in excess of 1013LSolar, they are amongst the most luminous sources known. Locally rare, such sources have been proposed to be the low-redshift analogues of sub-mm galaxies that dominate number counts at high redshift and contribute significantly to the star formation history of the universe at z>2. Such a connection would imply strong evolution. However, due to high obscuration, paucity, faintness and inhomogeneous selection methods, relatively little conclusive evidence exists regarding their nature, and their connection to ostensibly related populations. Recent studies providing important insights into understanding this diverse population are summarised. First results from a CO-line and mm-continuum study are presented and our Cycle-1 IRS GO program is described.
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