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The anatomy of the Orion B Giant Molecular Cloud: A local template for studies of nearby galaxies
- J. Pety, V. Guzm'an, +11 authors A. Sievers
- Physics
- 12 November 2016
We aim to develop the Orion B Giant Molecular Cloud (GMC) as a local template for interpreting extra-galactic molecular line observations. We use the wide-band receiver at the IRAM-30m to spatially… Expand
The ionization fraction gradient across the Horsehead edge: an archetype for molecular clouds
- J. Goicoechea, J. Pety, +6 authors Luth
- Physics
- 16 February 2009
Context. The ionization fraction (i.e., the electron abundance) plays a key role in the chemistry and dynamics of molecular clouds. Aims. We study the H 13 CO + ,D CO + and HOC + line emission… Expand
Low sulfur depletion in the Horsehead PDR
- J. Goicoechea, J. Pety, +4 authors S. Baek
- Physics
- 30 May 2006
Aims.We present 3.65'' × 3.34'' angular-resolution IRAM Plateau de Bure Interferometer (PdBI) observations of the CS J = 2-1 line toward the Horsehead Photodissociation Region (PDR), complemented… Expand
Herschel Survey of Galactic OH+, H2O+, and H3O+: Probing the Molecular Hydrogen Fraction and Cosmic-Ray Ionization Rate
- N. Indriolo, D. Neufeld, +19 authors F. Wyrowski
- Physics
- 2 December 2014
In diffuse interstellar clouds the chemistry that leads to the formation of the oxygen-bearing ions OH+, H2O+, and H3O+ begins with the ionization of atomic hydrogen by cosmic rays, and continues… Expand
THE CHEMISTRY OF INTERSTELLAR OH+, H2O+, AND H3O+: INFERRING THE COSMIC-RAY IONIZATION RATES FROM OBSERVATIONS OF MOLECULAR IONS
- D. Hollenbach, M. Kaufman, D. Neufeld, M. Wolfire, J. Goicoechea
- Physics
- 29 May 2012
We model the production of OH+, H2O+, and H3O+ in interstellar clouds, using a steady-state photodissociation region code that treats the freezeout of gas species, grain surface chemistry, and… Expand
The chemistry and spatial distribution of small hydrocarbons in UV-irradiated molecular clouds: the Orion Bar PDR
- S. Cuadrado, J. Goicoechea, P. Pilleri, J. Cernicharo, A. Fuente, C. Joblin
- Physics
- 1 December 2014
This work has been partially funded by MINECO grants (CSD2009-00038, AYA2009-07304, and AYA2012-32032). S.C. acknowledges support from FPI-INTA grant. P.P. acknowledges financial support from the… Expand
Formation of simple organic molecules in inner T Tauri disks
- M. Agúndez, J. Cernicharo, J. Goicoechea
- Physics
- 6 March 2008
Aims. We present time dependent chemical models for a dense and warm O-rich gas exposed to a strong, far ultraviolet (FUV) field aimed at exploring the formation of simple organic molecules in the… Expand
Herschel Measurements of Molecular Oxygen in Orion
- P. Goldsmith, R. Liseau, +31 authors U. Yildiz
- Physics
- 1 August 2011
We report observations of three rotational transitions of molecular oxygen (O2) in emission from the H2 Peak 1 position of vibrationally excited molecular hydrogen in Orion. We observed the 487 GHz,… Expand
The IRAM-30 m line survey of the Horsehead PDR - II. First detection of the l-C3H+ hydrocarbon cation
- J. Pety, P. Gratier, +9 authors D. Talbi
- Physics
- 30 October 2012
Context. Pure gas-phase chemistry models do not succeed in reproducing the measured abundances of small hydrocarbons in the interstellar medium. Information on key gas-phase progenitors of these… Expand
VELOCITY-RESOLVED [C ii] EMISSION AND [C ii]/FIR MAPPING ALONG ORION WITH HERSCHEL.
- J. Goicoechea, D. Teyssier, +22 authors J. Stutzki
- Physics, Medicine
- The Astrophysical journal
- 16 August 2015
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