176 citations · 1.9k across the 54 of their papers we have counts for
40 papers · 1 filter
CHemical Evolution in MassIve star-forming COres (CHEMICO). II. Molecular ions, electron fraction, and cosmic-ray ionisation rate
F. Fontani, E. Roueff, V. M. Rivilla +5
Molecular ions are crucial in initiating and regulating the formation of molecules in the interstellar medium, and are expected to be sensitive tracers of evolution in star-forming…
Collisional excitation of PO by -H
F. Tonolo, L. Bizzocchi, V. M. Rivilla +3
We report the derivation of rate coefficients for the rotational (de-)excitation of PO induced by collisions with H. The calculations were performed on a four-dimensional p…
Nitrogen fractionation in ammonia and its insights on nitrogen chemistry
Elena Redaelli, Luca Bizzocchi, Paola Caselli +1
Context. Observations of in the interstellar medium are becoming more frequent thanks to the increased telescope capabilities. However, interpreting these data…
Tracing the contraction of the pre-stellar core L1544 with HCO = 1-0 emission
J. Ferrer Asensio, S. Spezzano, P. Caselli +6
Spectral line profiles of several molecules observed towards the pre-stellar core L1544 appear double-peaked. For abundant molecular species this line morphology has been linked to…
Hyperfine resolved rate coefficients of HC17O+ with H2 (j = 0)
Francesca Tonolo, François Lique, Mattia Melosso +2
The formyl cation (HCO+) is one of the most abundant ions in molecular clouds and plays a major role in the interstellar chemistry. For this reason, accurate collisional rate coeff…
Nitrogen fractionation towards a pre-stellar core traces isotope-selective photodissociation
Silvia Spezzano, Paola Caselli, Olli Sipilä +1
Isotopologue abundance ratios are important to understand the evolution of astrophysical objects and ultimately the origins of a planetary system like our own. Being nitrogen a fun…
Molecular precursors of the RNA-world in space: new nitriles in the G+0.693-0.027 molecular cloud
Víctor M. Rivilla, Izaskun Jiménez-Serra, Jesus Martín-Pintado +10
Nitriles play a key role as molecular precursors in prebiotic experiments based on the RNA-world scenario for the origin of life. These chemical compounds could have been partially…
Deuteration of c-CH towards the pre-stellar core L1544
K. Giers, S. Spezzano, F. Alves +7
Context: In the centre of pre-stellar cores, the deuterium fractionation is enhanced due to the cold temperatures and high densities. Therefore, the chemistry of deuterated molecul…
CHEMOUT: CHEMical complexity in star-forming regions of the OUTer Galaxy. II. Methanol formation at low metallicity
F. Fontani, A. Schmiedeke, A. Sanchez-Monge +8
The outer Galaxy is an environment with metallicity lower than the Solar one and, because of this, the formation and survival of molecules in star-forming regions located in the in…
An Interferometric View of H-MM1. I. Direct Observation of NH3 Depletion
Jaime E. Pineda, Jorma Harju, Paola Caselli +14
Spectral lines of ammonia, NH, are useful probes of the physical conditions in dense molecular cloud cores. In addition to advantages in spectroscopy, ammonia has also been sug…
Precursors of the RNA-world in space: Detection of ()-1,2-ethenediol in the interstellar medium, a key intermediate in sugar formation
Víctor M. Rivilla, Laura Colzi, Izaskun Jiménez-Serra +20
We present the first detection of ()-1,2-ethenediol, (CHOH), the enol form of glycolaldehyde, in the interstellar medium towards the G+0.693-0.027 molecular cloud located in…
H2CS deuteration maps towards the pre-stellar core L1544
S. Spezzano, O. Sipilä, P. Caselli +7
Deuteration is a crucial tool to understand the complexity of interstellar chemical processes, especially when they involve the interplay of gas-phase and grain-surface chemistry.…
CHEMOUT: CHEMical complexity in star-forming regions of the OUTer Galaxy. I. Organic molecules and tracers of star-formation activity
F. Fontani, L. Colzi, L. Bizzocchi +8
The outer Galaxy is an environment with metallicity lower than the Solar one. Because of this, the formation and survival of molecules in star-forming regions located in the inner…
An improved study of HCO+ and He system: interaction potential, collisional relaxation and pressure broadening
F. Tonolo, L. Bizzocchi, M. Melosso +4
In light of its ubiquitous presence in the interstellar gas, the chemistry and reactivity of the HCO+ ion requires special attention. The availability of up-to-date collisional dat…
First sample of nitrogen isotopic ratio measurements in low-mass protostars
E. Redaelli, L. Bizzocchi, P. Caselli
Context. The nitrogen isotopic ratio is considered an important diagnostic tool of the star formation process, and is particularly important because it is directly linked…
Distribution of methanol and cyclopropenylidene around starless cores
S. Spezzano, P. Caselli, J. E. Pineda +3
Context. The spatial distribution of molecules around starless cores is a powerful tool for studying the physics and chemistry governing the earliest stages of star formation. Aims…
Extensive ro-vibrational analysis of deuterated-cyanoacetylene (DCN) from millimeter-wavelengths to the infrared domain
M. Melosso, L. Bizzocchi, A. Adamczyk +12
Cyanoacetylene, the simplest cyanopolyyne, is an abundant interstellar molecule commonly observed in a vast variety of astronomical sources. Despite its importance as a potential t…
First detection of NHD and ND in the interstellar medium
M. Melosso, L. Bizzocchi, O. Sipilä +7
Deuterium fractionation processes in the interstellar medium (ISM) have been shown to be highly efficient in the family of nitrogen hydrides. To date, observations were limited to…
DCN observations towards high-mass star-forming regions
V. M. Rivilla, L. Colzi, F. Fontani +5
We present the study of deuteration of cyanoacetylene (HCN) towards a sample of 28 high-mass star-forming cores divided into different evolutionary stages, from starless to evo…
Submillimetre and far-infrared spectroscopy of monodeuterated amidogen radical (NHD): improved rest-frequencies for astrophysical observations
Luca Bizzocchi, Mattia Melosso, Barbara Michela Giuliano +6
Observations of ammonia in interstellar environments have revealed high levels of deuteration, and all its D-containing variants, including ND, have been detected in cold prest…
Propargylimine in the laboratory and in space: millimetre-wave spectroscopy and first detection in the ISM
Luca Bizzocchi, Domenico Prudenzano, Victor M. Rivilla +10
Small imines containing up to three carbon atoms are present in the interstellar medium. As alkynyl compounds are abundant in this medium, propargylimine thus represents a promisin…
Seeds of Life in Space (SOLIS).VII. Discovery of a cold dense methanol blob toward the L1521F VeLLO system
C. Favre, C. Vastel, I. Jimenez-Serra +40
The SOLIS (Seeds Of Life In Space) IRAM/NOEMA Large Program aims at studying a set of crucial complex organic molecules in a sample of sources, with well-known physical structure,…
Seeds of Life in Space (SOLIS). VI. Chemical evolution of sulfuretted species along the outflows driven by the low-mass protostellar binary NGC1333-IRAS4A
Vianney Taquet, Claudio Codella, Marta de Simone +8
Context. Low-mass protostars drive powerful molecular outflows that can be observed with mm and sub-mm telescopes. Various sulfuretted species are known to be bright in shocks and…
The first steps of Interstellar Phosphorus Chemistry
Johanna Chantzos, Victor M. Rivilla, Anton Vasyunin +4
Phosphorus-bearing species are an essential key to form life on Earth, however they have barely been detected in the interstellar medium. Since only PN and PO have been identified…