DAEC, Observatoire de Paris-Meudon, 92195 Meudon, France
The CFRS 1452+52 field has been deeply imaged with the Infrared Space Observatory (ISO) using ISOCAM with the filter LW3 (12-18 microns). Careful data analysis and systematic comparison to deep optical and radio data have generated a catalog of 78 15 microns selected sources. They are redder and lie at higher redshift than I band selected galaxies, and most of them are star forming galaxies.
Spectral energy distributions have been derived from deep photometry in radio,
mid-IR, near-IR optical and UV wavelengths at rest, and systematically
compared to local templates of well known galaxies. Faint ISOCAM and
radio sources have been classified, their FIR luminosities interpolated, and
hence their SFR estimated independently of the extinction. One percent of
the galaxies are heavily extincted starbursts
(SFR from 120 to 330
),
and contribute to 25% of the SFR density
up to z=1. They display morphologies from S0 to Sab, a third of them
being interacting systems. 55
20% of the SFR at z < 1 is related
to emission at FIR and the global extinction is
.