Far-infrared and submillimeter observations of high redshift galaxies

Observations at far-infrared and submillimeter wavelengths promise torevolutionize the study of high redshift galaxies and AGN by providing a uniqueprobe of the conditions within heavily extinguished regions of star formationand nuclear activity. Observational capabilities in this spectral region willexpand greatly in the next decade as new observatories are developed both inspace and on the ground. These facilities include the Space Infrared TelescopeFacility (SIRTF), the far-infrared and submillimeter telescope (FIRST), and themillimeter array (MMA). In the longer term, the requirements of high angularresolution (comparable to that of HST), full wavelength coverage, and highsensitivity (approaching the fundamental limit imposed by photon countingstatistics) will motivate the development of far-IR and submillimeter spaceinterferometry using cold telescopes and incoherent detector arrays.Comment: 10 pages, LaTeX, including 5 postscript figures, and requiring aipproc.sty and epsfig.sty. To appear in the proceedings of the 9th Annual October Astrophysics Conference in Maryland, ``After the Dark Ages: When Galaxies were Young", edited by S. S. Holt and E. P. Smit