Results 1 to 10 of about 2,262 (175)
Chemistry on interstellar grains
Journal of Physics: Conference Series, 2005 In this review, our current knowledge of the chemistry that occurs on cold interstellar grain surfaces is examined. The formation of molecular hydrogen from hydrogen atoms is emphasized. Various methods of modeling diffusive reactions on grain surfaces are illustrated, including the rate equation method, and two basic stochastic approaches. The results
E Herbst, Q Chang, H M Cuppen
openaire +1 more source
The Astrophysical JournalEnols represent highly reactive intermediates toward the synthesis of complex organic molecules in the interstellar medium (ISM) and serve as key tracers of nonequilibrium chemistry driven by Galactic cosmic rays.
Michela Nonne +10 more
doaj +1 more source
Observations of phosphorus-bearing molecules in the interstellar medium
Frontiers in Astronomy and Space SciencesThe chemistry of phosphorus (31P) in space is particularly significant due to the key role it plays in biochemistry on Earth. Utilising radio and infrared spectroscopic observations, several key phosphorus-containing molecules have been detected in ...
Francesco Fontani +2 more
doaj +1 more source
The Astrophysical JournalAlthough oxygenated benzene derivatives are key precursors in the abiotic synthesis of biorelevant molecules and fundamental building blocks of functionalized polycyclic aromatic hydrocarbons, their formation mechanisms under interstellar conditions have
Jia Wang +3 more
doaj +1 more source
The chemistry of interstellar HnO+: Beyond the galaxy [PDF]
AIP Conference Proceedings, 2015 The astrochemistry of the HnO+ (n=1..3) ions is important as the main gas-phase formation route for water, and as tracer of the interstellar ionization rate by cosmic rays and other processes. While interstellar H3O+ has been known since the early 1990's, interstellar OH+ and H2O+ have only recently been detected using the Herschel space observatory ...
openaire +3 more sources
Rotational-state-selected Carbon Astrochemistry
CHIMIAThe addition of individual quanta of rotational excitation to a molecule has been shown to markedly change its reactivity by significantly modifying the intermolecular interactions. So far, it has only been possible to observe these rotational effects in
Jutta Toscano
doaj +1 more source
Gas-surface interactions and heterogeneous chemistry on interstellar grains analogues
EPJ Web of Conferences, 2012 Detailed laboratory studies and progress in surface science technique, have allowed in recent years the first experimental confirmation of surface reaction schemes, as introduced by Tielens, Hagen and Charnley [1,2].
Cazaux S. +3 more
doaj +1 more source
The Chemistry of Cold, Dark Interstellar Clouds [PDF]
Symposium - International Astronomical Union, 1987 In recent years the nearby cold, dark clouds have been shown to possess a rich chemistry, with interesting differences with respect to warmer massive-star-forming regions and also among the cold clouds themselves. 39 molecular species are now known in these regions.
openaire +2 more sources
Life, 2018 Carbonaceous meteorites provide the best glimpse into the solar system’s earliest physical and chemical processes. These ancient objects, ~4.56 billion years old, contain evidence of phenomena ranging from solar system formation to the synthesis of
George Cooper +2 more
doaj +1 more source
Interstellar molecules: guides for new chemistry
Chemical Communications, 2010 Interstellar space is among the most remarkable chemical laboratories in the universe. The existence of many unstable species with low-valent main group elements in the interstellar medium inspired us to investigate the feasibility of laboratory synthesis of such unstable molecules.
Mandal, Swadhin K., Roesky, Herbert W.
openaire +3 more sources