Abstract
Recent observations at high angular resolution of molecular clouds of low column density have revealed the presence of a conspicuous net of small scale filamentary structures, visible in the 12CO rotational lines only. In addition, the existence of unresolved structure at scales as small as ∼ 200 AU in space and/or velocity space is inferred from the spectral properties of the 12CO and 13CO emission. The resolved structures are part of the hierarchy of structures observed in molecular gas in the Solar Neighborhood and appear as non self-gravitating elements confined by an ambient pressure P 0/k B ∼ 3 × 104cm−3 K. We show why these structures might have their origin in the intermittent structures of turbulence in which viscous dissipation is concentrated in space and time.
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Falgarone, E. (1998). Small scale structure in nearby molecular gas. In: Breitschwerdt, D., Freyberg, M., Trümper, J. (eds) The Local Bubble and Beyond Lyman-Spitzer-Colloquium. Lecture Notes in Physics, vol 506. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0104729
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DOI: https://doi.org/10.1007/BFb0104729
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