Interstellar absorption features toward the compact infrared source W33A. (original) (raw)

ADS

;

• Davis, D. S. ;
• Black, J. H. ;
• Fink, U.

Abstract

A high-resolution (λ/∆λ ≡ 2000), broad-bandwidth (3.3 - 5.0 μm) spectrum of the compact infrared source W33 A is presented. Four absorption features are associated with compositionally distinct components in the interstellar medium: solid-phase C3, CN, or CH3OH at 4.9 μm, solid-phase CO and either solid or gaseous CH3NC near 4.6 μm, and the well-known "dirty ice" feature near 3 μm. The analysis of this spectrum supports chemically complex models of grain mantle evolution in cold, quiescent molecular clouds.

Publication:

The Astrophysical Journal

Pub Date:

December 1985

DOI:

10.1086/163754

Bibcode:

1985ApJ...299..873L

Keywords:

• Absorption Spectra;
• Infrared Spectra;
• Interstellar Matter;
• Molecular Clouds;
• Abundance;
• Astronomical Spectroscopy;
• High Resolution;
• Nebulae;
• Spectrum Analysis;
• Astrophysics