Molecular gas at high Galactic latitudes

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Abstract

This paper presents quantitative results of a CO survey of high-latitude molecular gas. The authors have found 57 clouds in 35 complexes at |b| ≥ 25°. Maps of 33 of the clouds are presented. Seventy percent of the clouds are associated with optical emission. The clouds are shown to be distributed asymmetrically with respect to b = 0°; the distribution is consistent with a displacement of the Sun of 30 pc above the midplane. A gap in the cloud distribution in the northern galactic hemisphere from 180° < l < 340° mimics that found in H I. Quantities such as the mass, size, density, extinction, internal velocity dispersion, and N(H₂)/N(H I) are reported.

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