Model Spectra
Model spectra as a function of redshift, z, for a maximally old $L^*$
galaxy in which all stars formed in an instantaneous burst at z =
infinity, and evolve passively thereafter, in an H_0 = 50, q_0 =
0.1 cosmology. The flux is normalized to an absolute K magnitude of
--25.1 today. Also shown are the senstivities for SIRTF/IRAC (1 sigma
in 500 sec), Abu/SPIREX (first season; 1 sigma in 10 hours),
and AIRO (1 sigma in 10 hours).
Both SIRTF and AIRO can detect high-z galaxies, but
AIRO has better resolution and larger fields of view.
From Fazio et al (1998).
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