126 citations · 680 across the 24 of their papers we have counts for
21 papers · 1 filter
Tentative Detection of FeS toward Orion SrcI
Aitana Tasa-Chaveli, Holger S. P. Müller, Álvaro Sánchez-Monge +3
Iron sulfide (FeS) is a key refractory compound in astrophysical environments. It is commonly found in meteorites and evidence of FeS has only been reported in solid form in a prot…
PDRs4All XXII. Near-Infrared continuum in the Orion Bar
Takashi Onaka, Emmanuel Dartois, Els Peeters +13
Conspicuous excess emission is present in the near-infrared (NIR) region in various objects, including reflection nebulae, planetary nebulae, and nearby galaxies. However, the spat…
PDRs4All: XVIII. The evolution of the PAH ionisation and PAH size distribution across the Orion Bar
Alexandros Maragkoudakis, Christiaan Boersma, Els Peeters +25
We investigate the evolution of the PAH population's charge state and size across key physical zones in the Orion Bar, which include the HII region, the atomic PDR (APDR), and thre…
Solar C/O ratio in planet-forming gas at 1 au in a highly irradiated disk
Ilane Schroetter, Olivier Berné, Emeric Bron +18
The chemical composition of exoplanets is thought to be influenced by the composition of the disks in which they form. JWST observations have unveiled a variety of species in numer…
The sulfur plume in the Horsehead nebula: New detections of SH, SH, and CO
Asunción Fuente, Gisela Esplugues, Pablo Rivière-Marichalar +13
Sulfur is essential for life, but its abundance and distribution in the interstellar medium remain uncertain, with over 90% of sulfur undetected in cold molecular clouds. Sulfur al…
Binding Energies and Vibrational Spectral Features of S Species on Amorphous Water-ice Mantles: A Quantum Mechanical Study
Jessica Perrero, Leire Beitia-Antero, Asunción Fuente +2
In the denser and colder regions of the interstellar medium (ISM), gas-phase sulfur is depleted by 2 or 3 orders of magnitude with respect to its cosmic abundance. Thus, which spec…
PDRs4All IX. Sulfur elemental abundance in the Orion Bar
Asunción Fuente, Evelyne Roueff, Franck Le Petit +31
One of the main problems in astrochemistry is determining the amount of sulfur in volatiles and refractories in the interstellar medium. The detection of the main sulfur reservoirs…
A far-ultraviolet-driven photoevaporation flow observed in a protoplanetary disk
Olivier Berné, Emilie Habart, Els Peeters +143
Most low-mass stars form in stellar clusters that also contain massive stars, which are sources of far-ultraviolet (FUV) radiation. Theoretical models predict that this FUV radiati…
Theoretical modelling of the adsorption of neutral and charged sulphur-bearing species on to olivine nanoclusters
Jessica Perrero, Leire Beitia-Antero, Asunción Fuente +2
Sulphur depletion in the interstellar medium (ISM) is a long-standing issue, as only 1% of its cosmic abundance is detected in dense molecular clouds (MCs), while it does not appea…
PDRs4All II: JWST's NIR and MIR imaging view of the Orion Nebula
Emilie Habart, Els Peeters, Olivier Berné +139
The JWST has captured the most detailed and sharpest infrared images ever taken of the inner region of the Orion Nebula, the nearest massive star formation region, and a prototypic…
The ALMA view of UV irradiated cloud edges: unexpected structures and processes
Javier R. Goicoechea, S. Cuadrado, J. Pety +8
Far-UV photons (E<13.6 eV) from hot massive stars regulate, or at least influence, the heating, ionization, and chemistry of most of the neutral interstellar medium. Investigating…
Molecular shock tracers in NGC 1068: SiO and HNCO
G. Kelly, S. Viti, S. García-Burillo +4
SiO(3-2) and HNCO(6-5) emission has been imaged in NGC 1068 with the Plateau de Bure Interferometer (PdBI). We perform an LTE and RADEX analysis to determine the column densities a…
Probing non polar interstellar molecules through their protonated form: Detection of protonated cyanogen (NCCNH+)
M. Agundez, J. Cernicharo, P. de Vicente +19
Cyanogen (NCCN) is the simplest member of the series of dicyanopolyynes. It has been hypothesized that this family of molecules can be important constituents of interstellar and ci…
Physical structure of the photodissociation regions in NGC 7023. Observations of gas and dust emission with Herschel
M. Köhler, E. Habart, H. Arab +16
The determination of the physical conditions in molecular clouds is a key step towards our understanding of their formation and evolution of associated star formation. We investiga…
Kinematics of the ionized-to-neutral interfaces in Monoceros R2
P. Pilleri, A. Fuente, M. Gerin +10
Context. Monoceros R2 (Mon R2), at a distance of 830 pc, is the only ultra-compact H ii region (UC H ii) where its associated photon-dominated region (PDR) can be resolved with the…
Spatial distribution of small hydrocarbons in the neighborhood of the Ultra Compact HII region Monoceros R2
P. Pilleri, S. Treviño-Morales, A. Fuente +14
We study the chemistry of small hydrocarbons in the photon-dominated regions (PDRs) associated with the ultra-compact HII region Mon R2. Our goal is to determine the variations of…
Herschel CHESS discovery of the fossil cloud that gave birth to the Trapezium and Orion KL
Ana López-Sepulcre, Mihkel Kama, Cecilia Ceccarelli +4
As part of the Herschel Guaranteed Time Key Programme CHESS, we present the discovery of a diffuse gas component in the foreground of the intermediate-mass protostar OMC-2 FIR 4, l…
Herschel/HIFI observations of [CII] and [13CII] in PDRs
V. Ossenkopf, M. Röllig, D. A. Neufeld +5
Recently, we introduced detailed isotopic chemistry into the KOSMA-tau model for photon-dominated regions (PDRs) to give theoretical predictions for the abundance of the carbon iso…
Molecular content of the circumstellar disk in AB Aur: First detection of SO in a circumstellar disk
A. Fuente, J. Cernicharo, M. Agundez +4
Very few molecular species have been detected in circumstellar disks surrounding young stellar objects. We are carrying out an observational study of the chemistry of circumstellar…
Nitrogen hydrides in the cold envelope of IRAS16293-2422
Pierre Hily-Blant, Sébastien Maret, Aurore Bacmann +4
Nitrogen is the fifth most abundant element in the Universe, yet the gas-phase chemistry of N-bearing species remains poorly understood. Nitrogen hydrides are key molecules of nitr…
Dissecting an intermediate-mass (IM) protostar: Chemical differentiation in IC1396N
A. Fuente, A. Castro-Carrizo, T. Alonso-Albi +6
We have carried out high-angular resolution (1.4") observations in the continuum at 3.1mm and in the N2H+ 1-0, CH3CN 5_k-4_k and 13CS 2-1 lines using the Plateau de Bure Interferom…