Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...253..174w&link_type=abstract
Astrophysical Journal, Part 1, vol. 253, Feb. 1, 1982, p. 174-187.
Astronomy and Astrophysics
Astrophysics
252
Cosmic Dust, Infrared Spectra, Interstellar Matter, Molecular Clouds, Protostars, Stellar Envelopes, Absorption Spectra, Black Body Radiation, Chemical Composition, Cosmochemistry, Main Sequence Stars, Silicates, Spectral Correlation, Spectral Resolution, Stellar Evolution
Scientific paper
Nearly complete 2 to 13 micron spectra are presented for 13 compact infrared sources associated with molecular clouds, along with partial spectra of six additional objects. The spectra are found to resemble blackbodies with superposed absorption features from 2.8 to 3.5 microns, at 6.0 and 6.8 microns, and in the silicate band centered near 9.7 microns. Correlations among the features are investigated in an attempt to confirm possible identifications. A good correlation between the deepest part of the absorption at 3.1 microns, its long wavelength wing, and the 6.0 micron features suggests that all may derive from large amorphous water ice particles. The relatively poor correlation between the 3.4 and 6.8 micron optical depths adds no evidence in support of the suggestion that these bands may be due to CH bonds
Gillett Fred C.
Herter Terry L.
Jones Barbara
Krassner J.
Merrill Michael K.
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