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Fire and ice: Spitzer infrared spectrograph (IRS) mid-infrared spectroscopy of IRAS F00183–7111

Authors
Type
Published Article
Journal
The Astrophysical Journal Supplement Series
Publisher
American Astronomical Society
Publication Date
Aug 31, 2004
Volume
154
Issue
1
Pages
184–184
Source
SETI Institute
License
Unknown

Abstract

We report the detection of strong absorption and weak emission features in the 4-27 μm Spitzer Infrared Spectrograph (IRS) spectrum of the distant ultraluminous infrared galaxy IRAS F00183-7111 (z= 0.327). The absorption features of CO 2 and CO gas, water ice, hydrocarbons, and silicates are indicative of a strongly obscured (A 9.6≥ 5.4; AV≥ 90) and complex line of sight through both the hot diffuse interstellar medium and shielded cold molecular clouds toward the nuclear power source. From the profile of the 4.67 μm CO ...

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