Detection of [O [CSC]i[/CSC]] λ6300 Emission from the Diffuse Interstellar Medium
نویسندگان
چکیده
منابع مشابه
Infrared Emission from Interstellar Dust. Ii. the Diffuse Interstellar Medium
We present a quantitative model for the infrared emission from dust in the di†use interstellar medium. The model consists of a mixture of amorphous silicate grains and carbonaceous grains, each with a wide size distribution ranging from molecules containing tens of atoms to large grains km in diameter. Z1 We assume that the carbonaceous grains have properties like polycyclic aromatic hydrocarbo...
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Absorption lines of have been detected in the spectra of two infrared sources in the Galactic 3 center and also toward the heavily reddened star Cygnus OB2 No. 12, whose line of sight is believed to include only di†use interstellar gas. The absorptions toward the Galactic center sources (IRS 3 and GCS 3-2) probably are due to both in di†use gas and in molecular clouds. The ratios of line equiva...
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The molecular ion H3 1 is considered the cornerstone of interstellar chemistry because it initiates the reactions responsible for the production of many larger molecules. Recently discovered in dense molecular clouds, H3 1 has now been observed in the diffuse interstellar medium toward Cygnus OB2 No. 12. Analysis of H3 1 chemistry suggests that the high H3 1 column density (3.8 3 10 per square ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1998
ISSN: 0004-637X
DOI: 10.1086/311154