Ultraluminous Infrared Galaxies

Details Ultraluminous Infrared Galaxies Ultraluminous Infrared Galaxies

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.6206s&link_type=abstract

American Astronomical Society, 192nd AAS Meeting, #62.06; Bulletin of the American Astronomical Society, Vol. 30, p.907

Astronomy and Astrophysics

Astronomy

Scientific paper

The luminosity function for infrared selected galaxies shows evidence for strong evolution for the most luminous objects. IRAS surveys of the local Universe (z < 0.35) suggest that the co-moving space density of objects with luminosities above 10(12) \ L_sun, increases as (1+z)(6-8) assuming pure number density evolution, similar to the strong evolution observed for optically selected quasars at similar bolometric luminosities and slightly larger redshifts. Such strong evolution, if continued out to redshifts z ~ 1-4 would predict a substantial population of ultraluminous infrared galaxies (i.e. > 10(3) deg(-2) ) that could be detected in the submillimeter with flux densities > 15 mJy at 450 mu m. Recent deep submillimeter obseravtions with the Submillimeter Common User Bolometer Array (SCUBA) on the James Clerk Maxwell Telescope (JCMT) suggest that such a population of high-z objects exists.

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