158 citations · 1.8k across the 33 of their papers we have counts for
37 papers
Complex Organic Molecules in Protostars with ALMA Spectral Surveys (COMPASS) II. Approach to data reduction and products for line-rich broadband (sub)millimeter spectra
Adele L. Plunkett, Sébastien Maret, Daniel Harsono +26
Studying the chemical composition of the warm gas surrounding embedded solar-type protostars is one of the areas for which the Atacama Large Millimeter/submillimeter Array (ALMA) i…
Complex Organic Molecules in Protostars with ALMA Spectral Surveys (COMPASS): I. Overview of the ALMA Large Program
J. K. Jørgensen, A. Coutens, M. N. Drozdovskaya +27
It remains a fundamental research question in astrochemistry to characterize the inventory of complex organic molecules formed during the early stages of star formation, which may…
Complex Organic Molecules in Protostars with ALMA Spectral Surveys (COMPASS) III. CHOH isotopic fractionation in the low-mass protostar BHR71-IRS1
A. Coutens, F. Cruz-Sáenz de Miera, J. K. Jørgensen +26
[Abridged] Methanol is a complex organic molecule detected in both ice and gas toward star-forming regions. Due to its high abundance, its rarer isotopologues, including the deuter…
Observational evidence for a possible link between PAH emission and dust trap locations in protoplanetary disks
Nienke van der Marel, Niels F. W. Ligterink, Ryan van der Werf +4
Polycyclic Aromatic Hydrocarbons (PAHs) are commonly detected in protoplanetary disks, but it is unclear what causes the wide range of intensities across the samples. In this work,…
The rapid formation of macromolecules in irradiated ice of protoplanetary disk dust traps
Niels F. W. Ligterink, Paola Pinilla, Nienke van der Marel +4
Organic macromolecular matter is the dominant carrier of volatile elements such as carbon, nitrogen, and noble gases in chondrites -- the rocky building blocks from which Earth for…
Evidence for Abiotic Dimethyl Sulfide in Cometary Matter
Nora Hänni, Kathrin Altwegg, Michael Combi +5
Technological progress related to astronomical observatories such as the recently launched James Webb Space Telescope (JWST) allows searching for signs of life beyond our Solar Sys…
Volatiles in the HO and CO ices of comet 67P/Churyumov-Gerasimenko
Martin Rubin, Kathrin Altwegg, Jean-Jacques Berthelier +11
ESA's Rosetta spacecraft at comet 67P/Churyumov-Gerasimenko (67P) was the first mission that accompanied a comet over a substantial fraction of its orbit. On board was the ROSINA m…
CoCCoA: Complex Chemistry in hot Cores with ALMA. Selected oxygen-bearing species
Y. Chen, M. L. van Gelder, P. Nazari +22
Complex organic molecules (COMs) have been observed to be abundant in the gas phase toward protostars. Deep line surveys have been carried out only for a limited number of well-kno…
An overview of desorption parameters of Volatile and Complex Organic Molecules: A systematic dig on experimental literature
N. F. W. Ligterink, M. Minissale
Many molecules observed in the interstellar medium are thought to result from thermal desorption of ices. Parameters such as desorption energy and pre-exponential frequency factor…
A major asymmetric ice trap in a planet-forming disk IV. Nitric oxide gas and a lack of CN tracing sublimating ices and a C/O ratio
M. Leemker, A. S. Booth, E. F. van Dishoeck +5
[Abridged] Most well-resolved disks observed with ALMA show signs of dust traps. These dust traps set the chemical composition of the planet forming material in these disks, as the…
N-bearing complex organics toward high-mass protostars: Constant ratios pointing to formation in similar pre-stellar conditions across a large mass range
P. Nazari, J. D. Meijerhof, M. L. van Gelder +10
No statistical study of COMs toward a large sample of high-mass protostars with ALMA has been carried out so far. We aim to study six N-bearing species: CHCN, HNCO, NHCHO,…
Predicting binding energies of astrochemically relevant molecules via machine learning
Torben Villadsen, Niels F. W. Ligterink, Mie Andersen
The behaviour of molecules in space is to a large extent governed by where they freeze out or sublimate. The molecular binding energy is thus an important parameter for many astroc…
The prebiotic molecular inventory of Serpens SMM1: II. The building blocks of peptide chains
Niels F. W. Ligterink, Aida Ahmadi, Bijaya. Luitel +7
This work aims to constrain the abundances of interstellar amides, by searching for this group of prebiotic molecules in the intermediate-mass protostar Serpens SMM1-a. ALMA observ…
Complex organic molecules in low-mass protostars on Solar System scales -- II. Nitrogen-bearing species
P. Nazari, M. L. van Gelder, E. F. van Dishoeck +10
The chemical inventory of planets is determined by the physical and chemical processes that govern the early phases of star formation. The aim is to investigate N-bearing complex o…
The prebiotic molecular inventory of Serpens SMM1 I. An investigation of the isomers CHNCO and HOCHCN
N. F. W. Ligterink, A. Ahmadi, A. Coutens +6
Methyl isocyanate (CHNCO) and glycolonitrile (HOCHCN) are isomers and prebiotic molecules that are involved in the formation of peptide structures and the nucleobase ad…
Detecting the elemental and molecular signatures of life: Laser-based mass spectrometry technologies
Niels F. W. Ligterink, Andreas Riedo, Marek Tulej +8
The identification of extraterrestrial life is one the most exciting and challenging endeavors in space research. The existence of extinct or extant life can be inferred from bioge…
The family of amide molecules toward NGC 6334I
Niels F. W. Ligterink, Samer J. El-Abd, Crystal L. Brogan +4
Amide molecules produced in space could play a key role in the formation of biomolecules on a young planetary object. However, the formation and chemical network of amide molecules…
Complex organic molecules in low-mass protostars on solar system scales -- I. Oxygen-bearing species
M. L. van Gelder, B. Tabone, Ł. Tychoniec +8
Complex organic molecules (COMs) are thought to form on icy dust grains in the earliest phase of star formation. The evolution of these COMs from the youngest Class 0/I protostella…
The ALMA-PILS survey: Inventory of complex organic molecules towards IRAS 16293-2422 A
S. Manigand, J. K. Jørgensen, H. Calcutt +6
Complex organic molecules (COM) are detected in many sources in the warm inner regions of envelopes surrounding deeply embedded protostars. Exactly how these COM form remains an op…
The ALMA-PILS survey: propyne (CHCCH) in IRAS 162932422
H. Calcutt, E. R. Willis, J. K. Jørgensen +7
Context. Propyne (CHCCH) has been detected in a variety of environments, from Galactic star-forming regions to extragalactic sources. Such molecules are excellent tracers of th…
Molecular complexity on disk-scales uncovered by ALMA: The chemical composition of the high-mass protostar AFGL 4176
Eva G. Bøgelund, Andrew G. Barr, Vianney Taquet +4
The chemical composition of high-mass protostars reflects the physical evolution associated with different stages of star formation. In this study, the molecular inventory of the f…
The ALMA-PILS survey: First detection of nitrous acid (HONO) in the interstellar medium
A. Coutens, N. F. W. Ligterink, J. -C. Loison +7
Nitrogen oxides are thought to play a significant role as a nitrogen reservoir and to potentially participate in the formation of more complex species. Until now, only NO, NO a…
Methylamine and other simple N-bearing species in the hot cores NGC 6334I MM1-3
E. G. Bøgelund, B. A. McGuire, M. R. Hogerheijde +2
In the search for the building blocks of life, nitrogen-bearing molecules are of particular interest since nitrogen-containing bonds are essential for the linking of amino acids an…
The ALMA-PILS survey: The first detection of doubly-deuterated methyl formate (CHD2OCHO) in the ISM
S. Manigand, H. Calcutt, J. K. Jørgensen +9
Studies of deuterated isotopologues of complex organic molecules can provide important constraints on their origin in regions of star formation. In particular, the abundances of de…