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Surface chemistry in the Interstellar Medium II. formation on dust with random temperature fluctuations
Emeric Bron, Jacques Le Bourlot, Franck Le Petit
The formation on grains is known to be sensitive to dust temperature, which is also known to fluctuate for small grain sizes due to photon absorption. We aim at expl…
Chemical complexity in the Horsehead photodissociation region
Viviana V. Guzmán, Jérôme Pety, Pierre Gratier +5
The interstellar medium is known to be chemically complex. Organic molecules with up to 11 atoms have been detected in the interstellar medium, and are believed to be formed on the…
HI-to-H2 Transitions and H I Column Densities in Galaxy Star-Forming Regions
Amiel Sternberg, Franck Le Petit, Evelyne Roueff +1
We present new analytic theory and radiative transfer computations for the atomic to molecular (HI-to-H2) transitions, and the build-up of atomic-hydrogen (HI) gas columns, in opti…
Widespread Rotationally-Hot Hydronium Ion in the Galactic Interstellar Medium
D. C. Lis, P. Schilke, E. A. Bergin +11
We present new observations of the (6,6) and (9,9) inversion transitions of the hydronium ion toward Sagittarius B2(N) and W31C. Sensitive observations toward Sagittarius B2(N) sho…