225 citations · 1.5k across the 39 of their papers we have counts for
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In situ characterization of volatile and refractory hydrocarbons produced by UV photolysis of interstellar CH ice
P. Samarth, G. Fedoseev, M. Bulak +5
Acetylene (CH) is commonly observed in star-forming regions, young stellar objects, and the Solar System. Laboratory and theoretical studies have linked this simplest alkyn…
Ammonium hydrosulfide (NH4SH) as a potentially significant sulfur sink in interstellar ices
Katerina Slavicinska, Adwin Boogert, Łukasz Tychoniec +6
Sulfur is depleted with respect to its cosmic standard abundance in dense star-forming regions. It has been suggested that this depletion is caused by the freeze-out of sulfur on i…
Formation of carbonyl sulfide (OCS) via SH radicals in interstellar CO-rich ice under dense cloud conditions
Julia C. Santos, Harold Linnartz, Ko-Ju Chuang
Carbonyl sulfide (OCS) is widely observed in the gas phase towards star-forming regions and was the first of the only two sulfur-bearing species detected in interstellar ices so fa…
Formation of S-bearing complex organic molecules in interstellar clouds via ice reactions with C2H2, HS, and atomic H
Julia C. Santos, Joan Enrique-Romero, Thanja Lamberts +2
The chemical network governing interstellar sulfur has been the topic of unrelenting discussion for the past decades due to the conspicuous discrepancy between its expected and obs…
Formation of N-bearing complex organic molecules in molecular clouds: Ketenimine, acetonitrile, acetaldimine, and vinylamine via the UV photolysis of CH ice
K. -J. Chuang, C. Jäger, J. C. Santos +1
The solid-state CH chemistry in interstellar HO-rich ice has been proposed to explain astronomically observed complex organic molecules (COMs), including ketene (CH…
A deep search for large complex organic species toward IRAS16293-2422 B at 3 mm with ALMA
P. Nazari, J. S. Y. Cheung, J. Ferrer Asensio +14
Complex organic molecules (COMs) have been detected ubiquitously in protostellar systems. However, at shorter wavelengths (~0.8mm) it is more difficult to detect larger molecules t…
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…
The hunt for formamide in interstellar ices: A toolkit of laboratory infrared spectra in astronomically relevant ice mixtures and comparisons to ISO, Spitzer, and JWST observations
Katerina Slavicinska, Marina Gomes Rachid, Will Robson Monteiro Rocha +3
This work aims at characterizing the mid-IR spectra of formamide in its pure form as well as in mixtures of the most abundant interstellar ices via laboratory simulation of such ic…
Resonant infrared irradiation of CO and CH3OH interstellar ices
J. C. Santos, K. -J. Chuang, J. G. M. Schrauwen +6
Solid-phase photo-processes involving icy dust grains greatly affect the chemical evolution of the interstellar medium by leading to the formation of complex organic molecules and…
Formation of the simplest amide in molecular clouds: formamide (NHCHO) and its derivatives in HO-rich and CO-rich interstellar ice analogs upon VUV irradiation
K. -J. Chuang, C. J\{"a}ger, S. A. Krasnokutski +2
The astronomical detection of formamide (NHCHO) toward various star-forming regions and in cometary material implies that the simplest amide might have an early origin in dark…
First experimental confirmation of the CH3O + H2CO -> CH3OH + HCO reaction: expanding the CH3OH formation mechanism in interstellar ices
Julia C. Santos, Ko-Ju Chuang, Thanja Lamberts +3
The successive addition of H atoms to CO in the solid phase has been hitherto regarded as the primary route to form methanol in dark molecular clouds. However, recent Monte Carlo s…
Methoxymethanol Formation Starting from CO-Hydrogenation
Jiao He, Mart Simons, Gleb Fedoseev +7
Methoxymethanol (CH3OCH2OH, MM) has been identified through gas-phase signatures in both high- and low-mass star-forming regions. This molecule is expected to form upon hydrogen ad…
Hydrogenation of accreting C-atoms and CO molecules -- simulating ketene and acetaldehyde formation under dark and translucent cloud conditions
Gleb Fedoseev, Danna Qasim, Ko-Ju Chuang +4
Simple and complex organic molecules (COMs) are observed along different phases of star and planet formation and have been successfully identified in prestellar environments such a…
Methane formation in cold regions from carbon atoms and molecular hydrogen
Thanja Lamberts, Gleb Fedoseev, Marc van Hemert +4
Methane is typically thought to be formed in the solid state on the surface of cold interstellar icy grain mantles via the successive atomic hydrogenation of a carbon atom. In the…
Formation of complex organic molecules in molecular clouds: acetaldehyde, vinyl alcohol, ketene, and ethanol via the "energetic" processing of CH ice
K. -J. Chuang, G. Fedoseev, C. Scirè +5
The simultaneous detection of organic molecules of the form CHO, such as ketene (CHCO), acetaldehyde (CHCHO), and ethanol (CHCHOH), toward early st…
Searches for Interstellar HCCSH and HCCS
Brett A. McGuire, Christopher N. Shingledecker, Eric R. Willis +14
A long standing problem in astrochemistry is the inability of many current models to account for missing sulfur content. Many relatively simple species that may be good candidates…
Alcohols on the rocks: solid-state formation in a H3CCCH + OH cocktail under dark cloud conditions
D. Qasim, G. Fedoseev, T. Lamberts +5
A number of recent experimental studies have shown that solid-state complex organic molecules (COMs) can form under conditions that are relevant to the CO freeze-out stage in dense…
Reactive Desorption of CO Hydrogenation Products under Cold Pre-stellar Core Conditions
K-J Chuang, G Fedoseev, D Qasim +3
The astronomical gas-phase detection of simple species and small organic molecules in cold pre-stellar cores, with abundances as high as n, contr…
Formation of interstellar methanol ice prior to the heavy CO freeze-out stage
D. Qasim, K. -J. Chuang, G. Fedoseev +3
The formation of methanol (CH3OH) on icy grain mantles during the star formation cycle is mainly associated with the CO freeze-out stage. Yet there are reasons to believe that CH3O…
Simultaneous Hydrogenation and UV-photolysis Experiments of NO in CO-rich Interstellar Ice Analogues; linking HNCO, OCN-, NH2CHO and NH2OH
Gleb Fedoseev, Ko-Ju Chuang, Ewine F. van Dishoeck +2
The laboratory work presented here, simulates the chemistry on icy dust grains as typical for the 'CO freeze-out stage' in dark molecular clouds. It differs from previous studies i…
Production of complex organic molecules: H-atom addition versus UV irradiation
K. -J. Chuang, G. Fedoseev, D. Qasim +3
Complex organic molecules (COMs) have been identified in different environments in star- forming regions. Laboratory studies show that COMs form in the solid state, on icy grains,…
H-atom addition and abstraction reactions in mixed CO, H2CO and CH3OH ices: an extended view on complex organic molecule formation
K. -J. Chuang, G. Fedoseev, S. Ioppolo +2
Complex organic molecules (COMs) have been observed not only in the hot cores surrounding low- and high- mass protostars, but also in cold dark clouds. Therefore, it is interesting…
On the relevance of the H2 + O reaction pathway for the surface formation of interstellar water - A combined experimental and modeling study
Thanja Lamberts, Herma Cuppen, Gleb Fedoseev +3
The formation of interstellar water has been commonly accepted to occur on the surfaces of icy dust grains in dark molecular clouds at low temperatures (10-20 K), involving hydroge…