Results 31 to 40 of about 31,252 (251)

A theoretical study of the conversion of gas phase methanediol to formaldehyde [PDF]

, 2003
Methanediol, or methylene glycol, is a product of the liquid phase reaction of water and formaldehyde and is a predicted interstellar grain surface species.
Blake, Geoffrey A., Goddard, William A., III, Kent, David R., IV, Widicus Weaver, Susanna L.   +3 more
core   +1 more source

Chemie im interstellaren Raum

CHIMIA, 1977
The parameters of the interstellar chemistry have been discussed: the cosmic abundance of elements, the mass and density of the gaseous component in the interstellar space, the temperature, the source of free energy, the stability of the molecules in ...
M. Taube
doaj   +1 more source

Systems Astrochemistry: A New Doctrine for Experimental Studies

Frontiers in Astronomy and Space Sciences, 2021
Laboratory experiments play a key role in deciphering the chemistry of the interstellar medium (ISM) and the formation of complex organic molecules (COMs) relevant to life.
Nigel J. Mason, Perry A. Hailey, Duncan V. Mifsud, Duncan V. Mifsud, James S. Urquhart   +4 more
doaj   +1 more source

Multi-line Observations, Models, and Data Needed to Understand the Nature of UV-irradiated Interstellar Matter [PDF]

EPJ Web of Conferences, 2022
Far-ultraviolet photons from OB-type massive stars regulate the heating, ionization, and chemistry of much of the neutral interstellar gas in star-forming galaxies.
Goicoechea Javier R., Cuadrado Sara, Le Petit Franck   +2 more
doaj   +1 more source

Open problems and perspectives offered by current and future instruments

EPJ Web of Conferences, 2012
We summarize recent observational and theoretical results and discuss the open challenges for astrochemistry and the promises offered by the current and upcoming instruments. Some of the main challenges are listed below. Characterization of the structure
Gérin M.
doaj   +1 more source

Time-resolved relaxation and fragmentation of polycyclic aromatic hydrocarbons investigated in the ultrafast XUV-IR regime

Nature Communications, 2021
Polycyclic aromatic hydrocarbons play an important role in interstellar chemistry, where interaction with high energy photons can induce ionization and fragmentation reactions.
J. W. L. Lee, D. S. Tikhonov, P. Chopra, S. Maclot, A. L. Steber, S. Gruet, F. Allum, R. Boll, X. Cheng, S. Düsterer, B. Erk, D. Garg, L. He, D. Heathcote, M. Johny, M. M. Kazemi, H. Köckert, J. Lahl, A. K. Lemmens, D. Loru, R. Mason, E. Müller, T. Mullins, P. Olshin, C. Passow, J. Peschel, D. Ramm, D. Rompotis, N. Schirmel, S. Trippel, J. Wiese, F. Ziaee, S. Bari, M. Burt, J. Küpper, A. M. Rijs, D. Rolles, S. Techert, P. Eng-Johnsson, M. Brouard, C. Vallance, B. Manschwetus, M. Schnell   +42 more
doaj   +1 more source

Interstellar Chemistry: Radiation, Dust and Metals [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractAn overview is given of the chemical processes that occur in primordial systems under the influence of radiation, metal abundances and dust surface reactions. It is found that radiative feedback effects differ for UV and X-ray photons at any metallicity, with molecules surviving quite well under irradiation by X-rays.
openaire   +2 more sources

THE 2014 KIDA NETWORK FOR INTERSTELLAR CHEMISTRY [PDF]

The Astrophysical Journal Supplement Series, 2015
Accepted for publication in ApJS on February 26th ...
Wakelam, V., Loison, J.-C., Herbst, Eric, Pavone, B., Bergeat, Astrid, Béroff, K., Chabot, M., Faure, A., Galli, D., Geppert, W., Gerlich, D., Gratier, P., Harada, N., Hickson, K., Honvault, P., Klippenstein, S., Le Picard, S., Nyman, G., Ruaud, M., Schlemmer, S., Sims, I., Talbi, D., Tennyson, J., Wester, R.   +23 more
openaire   +4 more sources

Isolation of a Highly Reactive CBNC Heterocumulene via Azidoborylene Photolysis: Facile Access to a Crystalline Dioxaborirane

Angewandte Chemie, EarlyView.
Azidoborylene photolysis results in the isolation of a reactive C═B═N═C heterocumulene bearing an ambiphilic boron centre. Addition of 3O2 to this species results in the clean conversion to a unique example of a dioxaborirane. ABSTRACT Oxidation of the formal boron(0) complex MeCAAC2B in the presence of tetrabutylammonium azide leads to the formation ...
Hayley King, Vignesh Pattathil, William Kennedy, Robert K. Szilagyi, Conor Pranckevicius   +4 more
wiley   +2 more sources

The interstellar chemistry of C₃H and C₃H₂ isomers. [PDF]

Mon Not R Astron Soc, 2017
We report the detection of linear and cyclic isomers of C3H and C3H2 towards various starless cores and review the corresponding chemical pathways involving neutral (C3Hx with x=1,2) and ionic (C3Hx+ with x = 1,2,3) isomers. We highlight the role of the branching ratio of electronic Dissociative Recombination (DR) reactions of C3H2+ and C3H3+ isomers ...
Loison JC, Agúndez M, Wakelam V, Roueff E, Gratier P, Marcelino N, Nuñez Reyes D, Cernicharo J, Gerin M.   +8 more
europepmc   +8 more sources