Accession Number:

ADA231953

Title:

New Version of NASA-Ames/Jamieson Science and Engineering Point Source Infrared Sky Model

Descriptive Note:

Final technical rept. 13 Jun 1989-12 Oct 1990

Corporate Author:

JAMIESON SCIENCE AND ENGINEERING INC SCOTTS VALLEY CA

Personal Author(s):

Report Date:

1991-01-08

Pagination or Media Count:

53.0

Abstract:

Our existing Sky Model for the point source infrared sky is extended to make predictions for any filter lying wholly within the range 2, 0 to 35.0 microns. To support this extension we have developed a library of complete 2-35 microns low-resolution 0.1 micron step size spectra to represent the 87 categories of Galactic object and 4 types of extragalactic source implicit in the Model. This library is based upon the technique of the spectral template 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 of representing the complete spectral energy distributions of celestial sources for which only infrared photometry or partial spectroscopy exists, provided that such sources can be classified by the scheme inherent in the Sky Model which is essentially based upon the combination of optical and mid-infrared attributes. Consequently, templates bear upon the important general problem of establishing mid-infrared calibration sources. The new Model is validated by comparison with broadband K 2.2 microns source counts.

Subject Categories:

  • Astronomy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE