93 citations · 536 across the 25 of their papers we have counts for
14 papers · 1 filter
Tracers of the ionization fraction in dense and translucent molecular gas: II. Using mm observations to constrain ionization fraction across Orion B
Ivana Bešlić, Maryvonne Gerin, Viviana V. Guzmán +28
The ionization fraction () is a crucial parameter of interstellar gas, yet estimating it requires deep knowledge of molecular gas chemistry…
Rotational equilibrium of C in diffuse interstellar clouds
J. Le Bourlot, E. Roueff, S. R. Federman +2
Context. Recent spectroscopic measurements have revealed absorption from higher rotational levels in C than previous observations. These improvements are accompanied by the ava…
Inelastic H + H Collision rates and their impact in the determination of the excitation temperature of H
Daniel Felix-Gonzalez, Pablo del Mazo-Sevillano, Alfredo Aguado +5
Context. In dffuse interstellar clouds the excitation temperature derived from the lowest levels of H is systematically lower than that derived from H2. The differences may b…
Toward a robust physical and chemical characterization of heterogeneous lines of sight: The case of the Horsehead nebula
Léontine Ségal, Antoine Roueff, Jérôme Pety +28
Dense cold molecular cores/filaments are surrounded by an envelope of translucent gas. Some of the low-J emission lines of CO and HCO isotopologues are more sensitive to the co…
Quantifying the informativity of emission lines to infer physical conditions in giant molecular clouds. I. Application to model predictions
Lucas Einig, Pierre Palud, Antoine Roueff +29
Observations of ionic, atomic, or molecular lines are performed to improve our understanding of the interstellar medium (ISM). However, the potential of a line to constrain the phy…
Bias versus variance when fitting multi-species molecular lines with a non-LTE radiative transfer model
Antoine Roueff, Jérôme Pety, Maryvonne Gerin +28
Robust radiative transfer techniques are requisite for efficiently extracting the physical and chemical information from molecular rotational lines.We study several hypotheses that…