Results 101 to 110 of about 31,252 (251)

Detection of the buckminsterfullerene cation (C60+) in space

, 2013
In the early 90s, C60+ was proposed as the carrier of two diffuse interstellar bands (DIBs) at 957.7 and 963.2 nm, but a firm identification still awaits gas-phase spectroscopic data.
Berné, Berné, C. Joblin, G. Mulas, Joblin, Leger, Montillaud, Moutou, O. Berné, Pilleri, Rapacioli   +10 more
core   +3 more sources

Rotational-state-selected Carbon Astrochemistry

CHIMIA
The 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., Romanzin C., Dulieu F., Fillion J.H.   +3 more
doaj   +1 more source

Using deuterated H3+ and other molecular species to understand the formation of stars and planets

, 2012
The H3+ ion plays a key role in the chemistry of dense interstellar gas clouds where stars and planets are forming. The low temperatures and high extinctions of such clouds make direct observations of H3+ impossible, but lead to large abundances of H2D ...
Lucas R., Pagani L., van der Werf P. P.
core   +1 more source

Effects of turbulent dust grain motion to interstellar chemistry

, 2015
Theoretical studies have revealed that dust grains are usually moving fast through the turbulent interstellar gas, which could have significant effects upon interstellar chemistry by modifying grain accretion.
Ge, J. X., He, J. H., Yan, H. R.
core   +1 more source

Monosaccharides and Their Derivatives in Carbonaceous Meteorites: A Scenario for Their Synthesis and Onset of Enantiomeric Excesses

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, Andro C. Rios, Michel Nuevo   +2 more
doaj   +1 more source

Nuclear interactions of low-energy cosmic rays with the interstellar medium

, 2011
Cosmic rays of kinetic energies below ~1 GeV per nucleon are thought to play a key role in the chemistry and dynamics of the interstellar medium. They are also thought to be responsible for nucleosynthesis of the light elements Li, Be, and B.
Kiener, J., Tatischeff, V.
core   +1 more source

Hydro-chemical study of the evolution of interstellar pre-biotic molecules during the collapse of molecular clouds

, 2012
One of the stumbling blocks for studying the evolution of interstellar molecules is the lack of adequate knowledge of the rate co-efficients of various reactions which take place in the Interstellar medium and molecular clouds.
Ankan Das, Boogert, Chakrabarti, Chakrabarti, Chakrabarti, Cuppen, Das, Fuente, Gibb, Guelin, Ioppolo, Kuan, Liton Majumdar, Sandip K. Chakrabarti, Snyder, Sonali Chakrabarti, Woon   +16 more
core   +1 more source

Radical-induced chemistry from VUV photolysis of interstellar ice analogues containing formaldehyde [PDF]

, 2016
Teddy Butscher, Fabrice Duvernay, Grégoire Danger, T. Chiavassa   +3 more
openalex   +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