Diagram Of The Abundances Of Hco And H13Co+ (IMAGE)

National Institutes of Natural Sciences

Diagram Of The Abundances Of Hco And H13Co+

Caption

The HCO absorption lines in J1717-337 (red) and NRAO530 (orange) were detected for the first time by this research. For comparison, we plot the three previously known HCO absorption systems (green), five photo-dissociation regions (blue), and a cold molecular cloud core (purple). The abundances are shown in column density, which indicates the number of molecules integrated along the line of sight towards a source. The ratio of HCO to H13CO+ indicates the strength of the ultraviolet light.

Credit

Credit: R. Ando (The University of Tokyo)

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