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The Chemical Composition of Comets—Emerging Taxonomies and Natal Heritage
Cometary nuclei contain the least modified material from the formative epoch of our planetary system, and their compositions reflect a range of processes experienced by material prior to itsExpand
SULFURETTED MOLECULES IN HOT CORES
The chemistry of sulfur-bearing molecules that result from grain-mantle evaporation into warm gas is described. Evaporation of ices, in which all the available sulfur is contained in H2S, drives aExpand
A voyage from dark clouds to the early Earth
Stellar nucleosynthesis of heavy elements, followed by their subsequent release into the interstellar medium, enables the formation of stable carbon compounds in both gas and solid phases.Expand
Deuterated Methanol in the Orion Compact Ridge
We have investigated the chemistry of hot cores containing methanol, formaldehyde, and their deuterated forms. We have computed the D fractionation ratios attainable by the addition of H and D atomsExpand
Constraining the abundances of complex organics in the inner regions of solar-type protostars
The high abundances of Complex Organic Molecules (COMs) with respect to methanol, the most abundant COM, detected towards low-mass protostars, tend to be underpredicted by astrochemical models. ThisExpand
Gas-grain chemical models of star-forming molecular clouds as constrained by ISO and SWAS observations
We have investigated the gaseous and solid state molecular composition of dense interstellar material that periodically experiences processing in the shock waves associated with ongoing starExpand
Cometary Isotopic Measurements
Isotopic ratios in comets provide keys for the understanding of the origin of cometary material, and the physical and chemical conditions in the early Solar Nebula. We review here measurementsExpand
Chemical Evolution in Protostellar Envelopes: Cocoon Chemistry
We have modeled the chemistry that occurs in the envelopes surrounding newborn stars as they are gradually heated by the embedded protostar and the ice mantles of dust grains evaporate, resulting inExpand
On the molecular complexity of the hot cores in Orion A - Grain surface chemistry as 'The last refuge of the scoundrel'
The gas phase chemistry of warm molecular material around protostars that is seeded with evaporating grain mantles have been modeled. It is shown that the release of simple molecules into the gasExpand
ETHYL CYANIDE ON TITAN: SPECTROSCOPIC DETECTION AND MAPPING USING ALMA
We report the first spectroscopic detection of ethyl cyanide (C2H5CN) in Titan’s atmosphere, obtained using spectrally and spatially resolved observations of multiple emission lines with the AtacamaExpand
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