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The galactic distribution of molecules (A CO survey)

Scoville, N. Z. (1975) The galactic distribution of molecules (A CO survey). In: H II Regions and Related Topics. Lecture Notes in Physics. No.42. Springer Berlin Heidelberg , Berlin, Heidelberg, pp. 272-287. ISBN 9783540074090.

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The J = 1 → 0 emission of CO has been surveyed in the galactic plane between ℓ = -10° and +90° with a 1′ beam sampling every degree. Molecular clouds emitting in the CO line are plentiful over the inner region of the galaxy. Their greatest number occurs in the galactic nucleus and at a radius of 5.5 kpc — a distribution similar to radio H II regions but very different from that previously derived for atomic hydrogen. The total mass in molecular clouds is found to be 1 → 3 10^9 M_⊙, and each typically has 10^5 M_⊙, an average density of 500 cm^(−3), and a temperature of 7°K. These results suggest that most of the interstellar medium in the interior of the galaxy is molecular H_2.

Item Type:Book Section
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Scoville, N. Z.0000-0002-0438-3323
Additional Information:© Springer-Verlag 1975. I describe the results of a joint investigation with P. M. Solomon, SUNY Stony Brook, which will also be published in the Astrophysical Journal 1975.
Subject Keywords:Radial Velocity; Molecular Cloud; Galactic Center; Galactic Plane; Galactic Rotation
Series Name:Lecture Notes in Physics
Issue or Number:42
Record Number:CaltechAUTHORS:20190328-135022416
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94251
Deposited By: George Porter
Deposited On:28 Mar 2019 23:09
Last Modified:03 Oct 2019 21:02

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