Opacity broadening and interpretation of suprathermal CO linewidths: Macroscopic Turbulence and Tangled Molecular Clouds

@article{Hacar2016OpacityBA,
  title={Opacity broadening and interpretation of suprathermal CO linewidths: Macroscopic Turbulence and Tangled Molecular Clouds},
  author={{\'A}lvaro Hacar and Jo{\~a}o Alves and Andreas Burkert and Paul. F. Goldsmith},
  journal={arXiv: Astrophysics of Galaxies},
  year={2016}
}
(Abridged) Many of the observed CO line profiles exhibit broad linewidths that greatly exceed the thermal broadening expected within molecular clouds. These suprathermal CO linewidths are assumed to be originated from the presence of unresolved supersonic motions inside clouds. Typically overlooked in the literature, in this paper we aim to quantify the impact of the opacity broadening effects on the current interpretation of the CO suprathermal line profiles. Without any additional… 
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