114 citations · 483 across the 20 of their papers we have counts for
9 papers · 1 filter
CO and N2 Produced from H2O, CO2, and NH3 Cometary Ice Analogs
Alexandra McKinnon, Alexia Simon, Michelle R. Brann +3
Hypervolatile species such as carbon monoxide (CO) and molecular nitrogen (N2) have been detected in comets, and could be used to constrain comet formation temperature conditions i…
Functionalization of Benzene Ices by Atomic Oxygen
Elettra L. Piacentino, Alexandra McKinnon, Nora Hänni +6
Small aromatic molecules, including functionalized derivatives of benzene, are known to be present throughout the different stages of star and planet formation. In particular, oxyg…
H2S ice sublimation dynamics: experimentally constrained binding energies, entrapment efficiencies, and snowlines
Julia C. Santos, Elettra L. Piacentino, Jennifer B. Bergner +2
Hydrogen sulfide (H2S) is thought to be an important sulfur reservoir in interstellar ices. It serves as a key precursor to complex sulfur-bearing organics, and has been proposed t…
Thermal Desorption Kinetics, Binding Energies, and Entrapment of Methyl Mercaptan Ices
Suchitra Narayanan, Elettra L. Piacentino, Karin I. Öberg +1
Organosulfur species are potential major carriers of sulfur in the interstellar medium, as well as interesting ingredients in prebiotic chemistry. The most fundamental question reg…
HCN snowlines in protoplanetary disks: constraints from ice desorption experiments
Jennifer B. Bergner, Mahesh Rajappan, Karin I. Oberg
HCN is among the most commonly detected molecules in star- and planet-forming regions. It is of broad interest as a tracer of star-formation physics, a probe of nitrogen astrochemi…
Entrapment of CO in CO2 ice
Alexia Simon, Karin I. Oberg, Mahesh Rajappan +1
Planet atmosphere and hydrosphere compositions are fundamentally set by accretion of volatiles, and therefore by the division of volatiles between gas and solids in planet-forming…
Oxygen atom reactions with C2H6, C2H4, and C2H2 in ices
Jennifer B. Bergner, Karin I. Oberg, Mahesh Rajappan
Oxygen atom addition and insertion reactions may provide a pathway to chemical complexity in ices that are too cold for radicals to diffuse and react. We have studied the ice-phase…
Desorption Kinetics and Binding Energies of Small Hydrocarbons
Aida Behmard, Edith C. Fayolle, Dawn M. Graninger +5
Small hydrocarbons are an important organic reservoir in protostellar and protoplanetary environments. Constraints on desorption temperatures and binding energies of such hydrocarb…
Methanol formation via oxygen insertion chemistry in ice
Jennifer B. Bergner, Karin I. Oberg, Mahesh Rajappan
We present experimental constraints on the insertion of oxygen atoms into methane to form methanol in astrophysical ice analogs. In gas-phase and theoretical studies this process h…