Analysis of the IRAS low resolution spectra
By: Irene Little-Marenin
Series: GL-TR -- 88-0111; Environmental research papers -- no. 1002; Environmental research papers (Hanscom AFB, Mass.) -- no. 1002; AFGL-TR -- 88-0111
Publisher: Optical Physics Division, Air Force Geophysics Laboratory
Published: 1988
Place of publication: Hanscom AFB, MA
Language: eng
Number of pages: 172
Subjects: Infrared astronomy; Stars; Spectra; Stellar spectra
Description: Analysis of the IRAS low resolution spectra show that the 8-22 micron spectral range show a variety of emission features. The strongest features in spectra of M stars are the 10 and 18 micron silicate emission features. In addition a three-component feature with peaks at 10, 11 and 13.1 micron and a weak, broad 9-15 micron feature is present in many M variable stars. Most carbon stars show the 11.2 micron SiC emission feature as well as, in some cases, an unidentified 8-9 micron emission feature. The MS, S and SC stars show a range of emission features whose peaks range from 10 to 11.2 micron. The excess emission above the underlying photospheric continuum in the 8-22 micron region for S Mira variables shows a sharp increase for period greater than about 370 days.
Notes: Cover title.

"Optical Physics Division, project 7670."

"1 April 1988."

Includes bibliographical references.