80 citations · 171 across the 4 of their papers we have counts for
5 papers · 1 filter
HCO mapping of the Horsehead : Tracing the illuminated dense molecular cloud surfaces
Maryvonne Gerin, Javier R. Goicoechea, Jérôme Pety +1
Far-UV photons strongly affect the physical and chemical state of molecular gas in the vicinity of young massive stars. We have obtained maps of the HCO and H13CO+ ground state lin…
Molecules in the disk orbiting the twin young suns of V4046 Sgr
Joel H. Kastner, B. Zuckerman, Pierre Hily-Blant +1
We report the results of a mm-wave molecular line survey of the nearby (D ~ 70 pc), 12 Myr-old system V4046 Sgr -- a tight (9 R_sun separation), short-period (2.42 day) binary with…
Dissipative structures of diffuse molecular gas III -- Small-scale intermittency of intense velocity-shears
Pierre Hily-Blant, Edith Falgarone, Jerome Pety
We further characterize the structures tentatively identified on thermal and chemical grounds as the sites of dissipation of turbulence in molecular clouds (Papers I and II). Our s…
Physical Characteristics of a Dark Cloud in an Early Stage of Star Formation toward NGC 7538: an Outer Galaxy Infrared Dark Cloud?
Wilfred W. F. Frieswijk, Marco Spaans, Russell F. Shipman +2
In the inner parts of the Galaxy the Infrared Dark Clouds (IRDCs) are presently believed to be the progenitors of massive stars and star clusters. Many of them are predominantly de…
Sulfur chemistry in the Horsehead. An interferometric view of the Horsehead PDR
J. R. Goicoechea, J. Pety, M. Gerin +3
Sulfur is an abundant element which remains undepleted in diffuse interstellar gas (Av<1) but it is traditionally assumed to deplete on dust grains at higher densities and larger A…