4 papers · 1 filter
The Horsehead mane: Towards an observational benchmark for chemical models
Jérôme Pety, Javier R. Goicoechea, Maryvonne Gerin +5
After a discussion about the need for observational benchmark for chemical models, we explain 1) why the Horsehead western edge is well suited to serve as reference for models and…
Small-scale dissipative structures of diffuse ISM turbulence: I- CO diagnostics
Pierre Hily-Blant, Jerome Pety, Edith Falgarone
Observations of translucent molecular gas in CO and CO emission lines, at high spectral and spatial resolutions, evidence different kinds of structures at small scale…
Connection between PAHs and small hydrocarbons in the Horsehead Nebula Photo-Dissociation Region
David Teyssier, David Fosse, Maryvonne Gerin +3
We present recent observations of small hydrocarbons (C3H2, C2H, C4H) with high abundances in the Photo-Dissociation Region of the Horsehead nebula. Our results show for the first…
The elusive structure of the diffuse molecular gas: shocks or vortices in compressible turbulence?
J. Pety, E. Falgarone
The cold diffuse interstellar medium must harbor pockets of hot gas to produce the large observed abundances of molecular species, the formation of which require much more energy t…