Publications (55)
ALMAGAL IX. The chemical complexity of AG318.9477-00.1960: A line-identification template for ALMAGAL
J. Allande, M. T. Beltrán, V. M. Rivilla +36
We present a detailed molecular line analysis of one of the most chemically rich cores in the ALMAGAL sample, the high-mass core~9 in the AG318.9477-00.1960 clump (AG318-c9), locat…
The GUAPOS project: G31.41+0.31 Unbiased ALMA sPectral Observational Survey. IV. Phosphorus-bearing molecules and their relation with shock tracers
F. Fontani, C. Mininni, M. T. Beltrán +6
The astrochemistry of the important biogenic element phosphorus (P) is still poorly understood, but observational evidence indicates that P-bearing molecules are likely associated…
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…
PRODIGE - envelope to disk with NOEMA: V. Low 12C/13C ratios for CH3OH and CH3CN in hot corinos
L. A. Busch, J. E. Pineda, O. Sipilä +15
The 12C/13C isotope ratio has been derived towards numerous cold clouds (20-50 K) and a couple protoplanetary disks and exoplanet atmospheres. However, direct measurements of this…
Combined model for , , and spin-state chemistry in molecular clouds
O. Sipilä, L. Colzi, E. Roueff +3
We present a new gas-grain chemical model for the combined isotopic fractionation of carbon and nitrogen in molecular clouds, in which the isotope chemistry of carbon and nitrogen…
Expanding the CHO Isomeric Interstellar Inventory: Discovery of Lactaldehyde and Methoxyacetaldehyde in G+0.693-0.027
M. Sanz-Novo, V. M. Rivilla, I. Jiménez-Serra +17
The tentative detection of 3-hydroxypropanal (HO(CH)C(O)H) toward the Galactic center molecular cloud G+0.693-0.027 prompts a systematic survey in this source aimed at dete…
Detection of the cyanomidyl radical (HNCN): a new interstellar species with the NCN backbone
V. M. Rivilla, I. Jiménez-Serra, J. GarcÃa de la Concepción +9
We report here the first detection in the interstellar medium of the cyanomidyl radical (HNCN). Using the Yebes 40m and the IRAM 30m telescopes, we have targeted the doublets of th…
The GUAPOS project: G31.41+0.31 Unbiased ALMA sPectral Observational Survey -- I. Isomers of CHO
C. Mininni, M. T. Beltrán, V. M. Rivilla +10
Understanding the degree of chemical complexity that can be reached in star-forming regions, together with the identification of precursors of the building blocks of life in the in…
First detection of CHNCO in the ISM and search of other isocyanates towards the G+0.693-0.027 molecular cloud
L. F. RodrÃguez Almeida, V. M. Rivilla, I. Jiménez-Serra +9
Little is known about the chemistry of isocyanates (compounds with the functional group R-N=C=O) in the interstellar medium, as only four of them have been detected so far: isocyan…
Protonated CO2 in massive star-forming clumps
F. Fontani, A. Vagnoli, M. Padovani +3
Interstellar CO2 is an important reservoir of carbon and oxygen, and one of the major constituents of the icy mantles of dust grains, but it is not observable directly in the cold…
Reconstructing the shock history in the CMZ of NGC 253 with ALCHEMI
K. -Y. Huang, S. Viti, J. Holdship +19
HNCO and SiO are well known shock tracers and have been observed in nearby galaxies, including the nearby (D=3.5 Mpc) starburst galaxy NGC 253. The simultaneous detection of these…
First extragalactic detection of a phosphorus-bearing molecule with ALCHEMI: phosphorus nitride (PN)
D. Haasler, V. M. Rivilla, S. MartÃn +16
Phosphorus (P) is a crucial element for life given its central role in several biomolecules. P-bearing molecules have been discovered in different regions of the Milky Way, but not…
Nitrogen fractionation in high-mass star-forming cores across the Galaxy
L. Colzi, F. Fontani, V. M. Rivilla +4
The fractionation of nitrogen (N) in star-forming regions is a poorly understood process. To put more stringent observational constraints on the N-fractionation, we have observed w…
An ALCHEMI inspection of sulphur-bearing species towards the central molecular zone of NGC 253
M. Bouvier, S. Viti, E. Behrens +19
Sulphur-bearing species are detected in various environments within Galactic star-forming regions and are particularly abundant in the gas phase of outflows and shocks, and photo-d…
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…
CHEMOUT: CHEMical complexity in star-forming regions of the OUTer Galaxy. IV. ALMA observations of organic species at Galactocentric radius ~23 kpc
F. Fontani, G. Vermariën, S. Viti +7
Single-dish observations suggest that the abundances of organic species in star-forming regions of the outer Galaxy, characterised by sub-Solar metallicities, are comparable to tho…
The evolution of sulphur-bearing molecules in high-mass star-forming cores
F. Fontani, E. Roueff, L. Colzi +1
To understand the chemistry of sulphur (S) in the interstellar medium, models need to be tested by observations of S-bearing molecules in different physical conditions. We analyse…
The GUAPOS project:III. Characterization of the O- and N-bearing complex organic molecules content and search for chemical differentiation
C. Mininni, M. T. Beltrán, L. Colzi +8
The G31.41+0.31 Unbiased ALMA sPectral Observational Survey (GUAPOS) project targets the hot molecular core (HMC) G31.41+0.31 (G31), to unveil the complex chemistry of one of the m…
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…
Molecular isotopologue measurements toward super star clusters and the relation to their ages in NGC253 with ALCHEMI
J. Butterworth, S. Viti, P. P. Van der Werf +18
Determining the evolution of the CNO isotopes in the interstellar medium (ISM) of starburst galaxies can yield important constraints on the ages of superstar clusters (SSCs), or on…
High-energy interstellar isomers: cis-N-methylformamide in the G+0.693-0.027 molecular cloud
S. Zeng, V. M. Rivilla, M. Sanz-Novo +8
Isomerism in complex organic molecules provides key insights into the formation mechanisms and physical conditions of the interstellar medium (ISM). Among the CHNO isomers,…
Excitation and spatial study of a prestellar cluster towards G+0.693-0.027 in the Galactic centre
L. Colzi, J. MartÃn-Pintado, S. Zeng +6
Star formation in the central molecular zone (CMZ) is suppressed with respect to that of the Galactic disk, and this is likely related to its high turbulent environment. This turbu…
Aromatic rings in the Central Molecular Zone: Benzonitrile
V. M. Rivilla, D. San Andrés, M. Sanz-Novo +12
In recent years, several aromatic molecules (benzene-based rings) have been detected in the cold molecular cloud TMC-1, with its CN-derivative, benzonitrile (c-CHCN), also…
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…
The GUAPOS project. VI: the chemical inventory of shocked gas
Ã. López-Gallifa, V. M. Rivilla, M. T. Beltrán +8
The study of the chemical composition of star-forming regions is key to understanding the chemical ingredients available during the formation of planetary systems. Because the chem…
Discovery of MgS and NaS in the Interstellar Medium and tentative detection of CaO
M. Rey-Montejo, I. Jimenez-Serra, J. Martin-Pintado +12
We report the first detection of the metal-bearing molecules sodium sulfide (NaS) and magnesium sulfide (MgS) and the tentative detection of calcium monoxide (CaO) in the interstel…
First interferometric study of enhanced N-fractionation in NH: the high-mass star-forming region IRAS 05358+3543
L. Colzi, F. Fontani, P. Caselli +3
Nitrogen (N) fractionation is used as a tool to search for a link between the chemical history of the Solar System and star-forming regions. A large variation of N/N…
Nitrogen and hydrogen fractionation in high-mass star forming cores from observations of HCN and HNC
L. Colzi, F. Fontani, P. Caselli +3
The ratio between the two stable isotopes of nitrogen, N and N, is well measured in the terrestrial atmosphere (), and in the pre-Solar nebula ().…
Astrochemistry on Galactic scales
L. Colzi, V. M. Rivilla, M. T. Beltrán +3
The increasing number of observations towards different environments in the Milky Way, as well as theoretical and experimental works, are improving our knowledge of the astrochemic…
The Galactic Centre G+0.633-0.0604 molecular cloud: a new astrochemical gold mine. I. Gas physical properties
D. San Andrés, L. Colzi, V. M. Rivilla +4
In the Central Molecular Zone (CMZ), shocks play a key role in triggering star formation and driving chemical enrichment. The Sgr B2 complex is a prime template, hosting massive pr…
CHemical Evolution in MassIve star-forming COres (CHEMICO). I. Evolution of the temperature structure
F. Fontani, V. M. Rivilla, E. Roueff +8
Increasing evidence shows that most stars in the Milky Way, including the Sun, are born in star-forming regions containing also high-mass stars, but due to both observational and t…
High C/C isotopic ratios toward G+0.693-0.027: evidence for gas inflow to the Central Molecular Zone
L. Colzi, O. Sipilä, I. Jiménez-Serra +4
Isotopic ratios are key tracers of Galactic chemical evolution because different isotopes are synthesized through distinct stellar nucleosynthesis processes. While the C/$^{…
The TOPGöt high-mass star-forming sample. I. Methyl cyanide emission as tracer of early phases of star formation
C. Mininni, F. Fontani, A. Sánchez-Monge +9
The TOPGöt project studies a sample of 86 high-mass star-forming regions in different evolutionary stages from starless cores to ultra compact HII regions. The aim of the survey i…
CHEMOUT: CHEMical complexity in star-forming regions of the OUTer Galaxy. V. Chemical composition gradients as a function of the galactocentric radius
D. Gigli, F. Fontani, L. Colzi +4
The outer Galaxy is characterized by a lower metallicity than regions near the Sun, suggesting differences in the formation and survival of molecules in star-forming regions. To un…
First detection of a deuterated molecule in a starburst environment within NGC 253
J. Butterworth, S. MartÃn, V. M. Rivilla +7
Deuterium was primarily created during the Big Bang Nucleosynthesis (BBN). This fact, alongside its fractionation reactions resulting in enhanced abundances of deuterated molecules…
The first detection of SiC in the interstellar medium
S. Massalkhi, I. Jiménez-Serra, J. MartÃn-Pintado +7
We report the first detection of SiC in the interstellar medium. The molecule was identified through six rotational transitions toward G\,+0.6930.027, a molecular cloud loca…
The Galactic-Centre Arms inferred from ACES (ALMA CMZ Exploration Survey)
Y. Sofue, Tomo. Oka, S. N. Longmore +44
Analyzing longitude-velocity diagrams (LVDs) in the CS(J=2-1) and H13CN(J=1-0) molecular lines from the internal release data of the ALMA Central-Molecular-Zone Exploration Survey…
The GUAPOS project II. A comprehensive study of peptide-like bond molecules
L. Colzi, V. M. Rivilla, M. T. Beltrán +12
Peptide-like bond molecules, which can take part to the formation of proteins in a primitive Earth environment, have been detected up to now only towards a few sources. We present…
The GUAPOS project -- VII: Physical structure and molecular environment of the G31.41+0.31 HII region
R. Cesaroni, M. T. Beltrán, V. M. Rivilla +6
Ionised regions around OB-type stars are formed at an early stage of their evolution and are important to investigate the formation process of these objects. However, so far only f…
Carbon isotopic fractionation in molecular clouds
L. Colzi, O. Sipilä, E. Roueff +2
C-fractionation has been studied from a theoretical point of view with different models of time-dependent chemistry, including both isotope-selective photodissociation and low-temp…
CHEMOUT: CHEMical complexity in star-forming regions of the OUTer Galaxy III. Nitrogen isotopic ratios in the outer Galaxy
L. Colzi, D. Romano, F. Fontani +6
Nitrogen isotopic ratios are a key tool for tracing Galactic stellar nucleosynthesis. We present the first study of the N/N abundance ratio in the outer regions of th…
The trans/cis ratio of formic, HCOOH, and thioformic, HC(O)SH, acids in the Interstellar Medium
J. GarcÃa de la Concepción, L. Colzi, I. Jiménez-Serra +6
We studied theoretically the cis-trans isomerization reactions of two astrophysically relevant acids, formic acid (HCOOH) and thioformic acid (HC(O)SH), where the latter has recent…
Methanol masers in NGC 253 with ALCHEMI
P. K. Humire, C. Henkel, A. Hernández-Gómez +23
Context: Methanol masers of Class I (collisionally-pumped) and Class II (radiatively-pumped) have been studied in great detail in our Galaxy in a variety of astrophysical environme…
Magnetic field morphology and evolution in the Central Molecular Zone and its effect on gas dynamics
R. G. Tress, M. C. Sormani, P. Girichidis +34
The interstellar medium in the Milky Way's Central Molecular Zone (CMZ) is known to be strongly magnetised, but its large-scale morphology and impact on the gas dynamics are not we…
Amides inventory towards the G+0.693-0.027 molecular cloud
S. Zeng, V. M. Rivilla, I. Jiménez-Serra +6
Interstellar amides have attracted significant attentions as they are potential precursors for a wide variety of organics essential to life. However, our current understanding of t…
First survey of HCNH in high-mass star-forming cloud cores
F. Fontani, L. Colzi, E. Redaelli +2
Most stars in the Galaxy, including the Sun, were born in high-mass star-forming regions. It is hence important to study the chemical processes in these regions to better understan…
Disruption of a massive molecular cloud by a supernova in the Galactic Centre: Initial results from the ACES project
M. Nonhebel, A. T. Barnes, K. Immer +33
The Milky Way's Central Molecular Zone (CMZ) differs dramatically from our local solar neighbourhood, both in the extreme interstellar medium conditions it exhibits (e.g. high gas,…
Deuterium fractionation as a multi-phase component tracer in the Galactic Centre
L. Colzi, J. MartÃn-Pintado, V. M. Rivilla +6
The Central Molecular Zone (CMZ) contains most of the mass of our Galaxy but its star formation rate is one order of magnitude lower than in the Galactic disc. This is likely relat…
The GUAPOS project. V: The chemical ingredients of a massive stellar protocluster in the making
Ã. López-Gallifa, V. M. Rivilla, M. T. Beltrán +9
Most stars, including the Sun, are born in rich stellar clusters containing massive stars. Therefore, the study of the chemical reservoir of massive star-forming regions is crucial…
Chemical modelling of interstellar MgS
M. Rey-Montejo, I. Jimenez-Serra, T. Millar +8
The detection of magnesium sulphide (MgS) and sodium sulphide (NaS) towards the Galactic Center molecular cloud G+0.693 constitutes the first detection of metal sulphides in the in…
Evolutionary study of complex organic molecules in high-mass star-forming regions
A. Coletta, F. Fontani, V. M. Rivilla +4
We have studied four complex organic molecules (COMs), methyl formate (), dimethyl ether (), formamide (), and ethyl cyanide (), towards a l…
Complex Organic Molecules towards the central molecular zone of NGC 253
M. Bouvier, S. Viti, J. G. Mangum +9
Interstellar complex organic molecules (iCOMs) may have a link to prebiotic species, key building blocks for life. In Galactic star-forming (SF) regions, spatial variations of iCOM…
ALCHEMI: an ALMA Comprehensive High-resolution Extragalactic Molecular Inventory. Survey presentation and first results from the ACA array
S. MartÃn, J. G. Mangum, N. Harada +32
We used the Atacama Large Millimeter/submillimeter Array (ALMA), covering a nearly contiguous 289 GHz frequency range between 84.2 and 373.2 GHz, to image the continuum and spectra…
The Distribution and Origin of CH in NGC 253 from ALCHEMI
J. Holdship, S. Viti, S. MartÃn +18
Observations of chemical species can provide an insight into the physical conditions of the emitting gas but it is important to understand how their abundances and excitation vary…
No nitrogen fractionation on 600 au scale in the Sun progenitor analogue OMC-2 FIR4
F. Fontani, G. Quaia, C. Ceccarelli +8
We show the first interferometric maps of the 14N/15N ratio obtained with the Atacama Large Millimeter Array (ALMA) towards the Solar-like forming protocluster OMC-2 FIR4. We obser…