Abstract
view Abstract Citations (50) References (8) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Carbon monoxide in the Galaxy. II. The thickness of the galactic CO layer. Burton, W. B. ; Gordon, M. A. Abstract Observations of the 2.6-mm line of (C-12)O, made at 21 deg longitude between +2 and -2 deg latitude are modeled well by a Gaussian distribution in z of dispersion 50 + or - 10 pc. The model consists of a stochastic assemblage of dark clouds, each having a diameter of 5 pc, an excitation temperature of 16 K, a representative optical depth of 5, an internal dispersion of 2.5 km/s, and a cloud-to-cloud separation of 800 pc at the mode (5.8 kpc) of the previously observed variation with galactocentric radius. Presumably these parameters also describe H2 in the Galaxy. Comparison with H I observations clearly show the molecular layer to be thinner and more clumpy than the much more ubiquitous atomic hydrogen. Publication: The Astrophysical Journal Pub Date: August 1976 DOI: 10.1086/182210 Bibcode: 1976ApJ...207L.189B Keywords: Carbon Monoxide; Galactic Structure; Interstellar Gas; Milky Way Galaxy; Astronomical Maps; Atmospheric Models; Hydrogen Clouds; Velocity Distribution; Astrophysics full text sources ADS |
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