CO observations of southern high-latitude clouds

Abstract

view Abstract Citations (148) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS CO Observations of Southern High-Latitude Clouds Keto, E. R. ; Myers, P. C. Abstract Results from a survey of 2.6 mm emission in the J = 1 to 0 transition of CO of clouds are reported for 15 high Galactic latitude clouds and three clouds located on the fringe of a large molecular cloud in the Chameleon dark cloud complex. The line widths, excitation temperatures, sizes, and n(CO)/N(H2) ratio of these clouds are similar to those seen in dark clouds. The densities, extinctions, and masses of the high-latitude clouds are one order of magnitude less than those found in dark clouds. For its size and velocity dispersion, the typical cloud has a mass of at least 10 times less than that needed to bind the cloud by self-gravity alone. External pressures are needed to maintain the typical cloud in equilibrium, and these values are consistent with several estimates of the intercloud pressure. Publication: The Astrophysical Journal Pub Date: May 1986 DOI: 10.1086/164181 Bibcode: 1986ApJ...304..466K Keywords: Carbon Monoxide; Interstellar Gas; Molecular Clouds; Gravitation; Milky Way Galaxy; Southern Sky; Virial Theorem; Astrophysics; INTERSTELLAR: MOLECULES full text sources ADS | data products SIMBAD (19)