Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-02-07
Astronomy and Astrophysics
Astrophysics
LaTeX with EslabStyle.cls, 8 figures, in Star Formation from the Small to the Large Scale, 33rd ESLAB Symposium, SP-445, in pr
Scientific paper
We constructed a model of infrared and sub-mm (hereafter IR) galaxy number count and estimated history of the IR luminosity density. We treat the evolutionary change of galaxy luminosities as a stepwise nonparametric form, in order to explore the most suitable evolutionary history which reproduces the present observational results. We found the evolutionary patterns which satisfy both constraints required from Cosmic Infrared Background (CIRB) and IR galaxy number counts. One order of magnitude increase of luminosity at redshift $z=0.75 - 1.0$ was found in IR $60 \mu$m luminosity density evolution. We also found that a large number of galaxies ($\sim 10^7$ in the whole sky) will be detected in all-sky survey at far-infrared by Infrared Imaging Surveyor (IRIS); Japanese infrared satellite project Astro-F.
Hirashita Hiroyuki
Ishii Takaaki
Takeuchi Tadashi
Yoshikawa Kenichi
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