ISO Continuum Observations of Quasars at z=1-4

Astronomy and Astrophysics – Astronomy

Scientific paper

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Quasars, Iso, Infrared Astronomy, Spectral Energy Distributions

Scientific paper

Eight luminous quasars with -30 < MB < -27 at z = 1.4 - 3.7 have been observed in the mid- and far-infrared with ISO. To obtain SEDs (Spectral observed in the mid- and far-infrared with ISO. To obtain spectral energy distributions (SEDs) from the UV to far-infrared, additional optical and near-infrared observations were made from the ground. The observed SEDs are compared with the mean-SED of low-redshift quasars with less luminosity (-27 < MB < -22) given by Elvis et al. (1994). There is no evidence of excess in the mid- and far-infrared in our quasar sample.

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