Interstellar dust models for extinction and emission
F. X. Desert, F. Boulanger, J. L. Puget;
AaA, 1990, 237, 215
ABSTRACT:A new coherent interpretation of the interstellar extinction and the IR emission is proposed which uses an empirical dust model made
of big grains, very small grains, and polycyclic aromatic
hydrocarbons.
It is argued that the big grain component is probably made of a size
distribution of silicates with some dark refractory mantle and that very small gains
are probably carbon-dominated.
The variations of IR colors with the
intensity of the incident radiation field is studied in various astrophysical
situations.
Correlations between anomalous extinction curves and anomalous IR colors are
predicted.
KEYWORDS: cosmic dust, emission spectra, infrared radiation, interstellar matter, astronomical models, carbon, extinction, grain size, particle size distribution, silicates
PERSOKEY:dust, mir, fir, extinction, pah, size distribution, ,
CODE: desert90