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Published 1987 | public
Book Section - Chapter

H₂ in the Galaxy


Molecular clouds are the active, star forming component of the interstellar medium. In this article, we review the theoretical and empirical basis for using the 2.6 mm CO emission line as a tracer of H₂ and we summarize the galactic distribution and properties of the molecular clouds. [All quantitative estimates are reduced to the recent IAU adopted value of R₀ = 8.5 kpc.]

Additional Information

© D. Reidel Publishing Company 1987. This research was supported in part by NSF Grant 84-12473 and an IRAS General Investigator Grant. It is a pleasure to acknowledge the assistance of Leona Kershaw in preparation of this manuscript.

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August 22, 2023
January 15, 2024