Hunting for the elusive methylene radical

A. M. Jacob; K. M. Menten; Y. Gong; P. Bergman; M. Tiwari; S. Brünken; A. O. H. Olofsson

doi:10.1051/0004-6361/202039906

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Volume 647 (March 2021)

A&A, 647 (2021) A42

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Fig. 13

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Main-beam brightness temperature (T_mb) and excitation temperature (T_ex) for the 2₁₂−3₀₃ fine-structure lines of p-CH₂. The inset panels expand on the (T_mb) and (T_ex) values for gas densities between 10 and 10⁶ cm⁻³.

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