THE ASTRONOMICAL JOURNAL       VOLUME 105, NUMBER 5, PAGE 1860         MAY 1993

             A MODEL OF THE 2-35 MICRON POINT SOURCE INFRARED SKY

                                 MARTIN COHEN

  Jamieson Science & Engineering, Inc., 5321 Scotts Valley Drive, Suite 204,
                        Scotts Valley, California 95066
                  Electronic Mail: cohen@bkyast.berkeley.edu

                                   ABSTRACT

    The Point Source Infrared Sky Model of Wainscoat et al. [ApJS, 83, 111
    (1992)] is extended to make predictions for any filter lying wholly
    within the range 2.0 to 35.0 microns.  The development of a library of
    complete 2-35 micron low-resolution spectra (with 0.1 micron step size)
    that represent the 87 categories of Galactic object and four types of
    extragalactic source implicit in the Model supports this extension.
    This library is based upon the "spectral template" technique whereby
    existing spectral fragments for individual sources (from ground-based,
    airborne, and satellite-borne instruments) are combined into complete
    spectra.  Templates provide a natural way to represent the complete
    spectral energy distributions of celestial sources for which only
    infrared photometry and/or partial spectrosopy are available.
    Consequently, templates bear upon the important general problem of
    establishing midinfrared calibration sources.  The new Model is
    validated by comparison with broadband K (2.2 micron) source counts.