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6 papers · 2 filters
Widespread Galactic CF+ absorption: detection toward W49 with the Plateau de Bure Interferometer
H. S. Liszt, V. V. Guzman, J. Pety +3
To study the usefulness of \CFP\ as a tracer of the regions where C\p\ and \HH\ coexist in the interstellar medium. We used the Plateau de Bure Interferometer to synthesize \CFP\ J…
Nascent bipolar outflows associated with the first hydrostatic core candidates Barnard 1b-N and 1b-S
M. Gerin, J. Pety, A. Fuente +3
In the theory of star formation, the first hydrostatic core (FHSC) phase is a critical step in which a condensed object emerges from a prestellar core. This step lasts about one th…
The chemical footprint of the star formation feedback in M 82 on scales of 100 pc
D. Ginard, A. Fuente, S. García-Burillo +7
We present interferometric observations of the CN 1-0 (113.491 GHz), N2H+ 1-0 (93.173 GHz), H(41)a (92.034 GHz), CH3CN (91.987 GHz), CS 3-2 (146.969 GHz), c-C3H2 3-2 (145.089 GHz),…
Turbulent energy dissipation and intermittency in ambipolar diffusion magnetohydrodynamics
Georgios Momferratos, Pierre Lesaffre, Edith Falgarone +1
The dissipation of kinetic and magnetic energy in the interstellar medium (ISM) can proceed through viscous, Ohmic or ambipolar diffusion (AD). It occurs at very small scales compa…
Spatially resolved l-c3h+ emission in the horsehead photodissociation region: Further evidence for a top-down hydrocarbon chemistry
V. V. Guzmán, J. Pety, J. R. Goicoechea +4
Small hydrocarbons, such as C2H, C3H and C3H2 are more abundant in photo-dissociation regions (PDRs) than expected based on gas-phase chemical models. To explore the hydrocarbon ch…
Impacts of pure shocks in the BHR71 bipolar outflow
Antoine Gusdorf, Denise Riquelme, Sibylle Anderl +10
During the formation of a star, material is ejected along powerful jets that impact the ambient material. This outflow regulates star formation by e.g. inducing turbulence and heat…