Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sf2a.conf..211f&link_type=abstract
SF2A-2010: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: S. Boissier, M. Heydari-
Astronomy and Astrophysics
Astrophysics
Astrochemistry, Diffuse Interstellar Medium, Hydrides, Absorption Spectroscopy, Submillimeter And Far Infrared
Scientific paper
Absorption spectroscopy performed with Herschel/HIFI in the direction of bright star-forming regions of the inner Galaxy provides a new probe of the interstellar medium. The ground-state transition of several light hydrides are found to have large optical depths and are therefore sensitive tracers of gas components that are poorly known such as gas of low density containing only a small fraction of molecular hydrogen. The large observed abundances of HF, CH^+, OH^+, H_2O^+ among others, provide new clues on the processes leading to the incorporation of heavy elements into interstellar chemistry.
de Luca Massimo
Falgarone Edith
Gerin Maryvonne
Godard Benjamin
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