Computer Science
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002noao.prop..150y&link_type=abstract
NOAO Proposal ID #2002A-0150
Computer Science
Scientific paper
We propose to carry out spectroscopic observations of a large sample of far-infrared (FIR) sources identified in the deep Infrared Space Observatory far-infrared survey of the Lockman Hole region using HYDRR on the WIYN telescope. A comparison of the ISOPHOT sources with radio and X-ray data suggests that most of the FIR sources are star-forming galaxies rather than AGNs. The number density of ISOPHOT sources exceeds the predictions of the star formation evolution models based on optical data. Substantial dust obscuration of star forming activity may be occurring even at modest redshifts, where most of these ISOPHOT sources are expected to be located. Our proposed multi-object spectroscopy with HYDRR will help determine the redshifts and luminosity for the bulk of the ISOPHOT sources. Our proposed WIYN observations will enable us for the first time to constrain the contribution of far-infrared galaxies to the star formation history of the Universe over the important redshift range z=0-1.5 where the SFR appears to increase by as much as a factor of 20-100 compared to the current epoch, and where as much as 50-80% of the luminosity is hidden by dust.
Kawara Kimiaki
Murayama Takashi
Oyabu Shinki
Sanders Dave
Sato Yasunori
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