Interstellar matrices: the chemical composition and evolution of interstellar ices as observed by ISO

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Louis d'Hendecourt, E Dartois

Abstract

Matrix isolation techniques have been developed in the early sixties as a tool for studying the spectroscopic properties of out of equilibrium species (atoms, radicals, ions, reactive molecules), embedded in rare gas inert matrices at low temperatures. Cold interstellar grains surfaces are able to condense out gas phase molecules, routinely observed by radioastronomy. These grain 'mantles' can be considered as 'interstellar matrices'. However, these matrices are not clean and unreactive. They are made principally of dirty ices whose composition must be determined carefully to assess the importance of the solid state chemistry that takes place in the Interstellar Medium. Infrared spectroscopy, both in astronomy and in the laboratory, is the unique tool to determine the chemical composition of these ices. Astronomical spectra can directly be compared with laboratory ones obtained using classical matrix isolation techniques. Furthermore, dedicated experiments may be undertaken to further improve the understanding of the basic physico-chemical processes that take place in cosmic ices.

References


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Citations

Nov 9, 2011·Astrobiology·Pierre de MarcellusLouis Le Sergeant d'Hendecourt
Apr 2, 2010·Physical Chemistry Chemical Physics : PCCP·Albert RimolaPiero Ugliengo
Jul 21, 2006·The Journal of Physical Chemistry. B·Stéphanie LucasJean Suzanne
Oct 29, 2013·Chemical Reviews·Gianfranco Vidali
Apr 13, 2019·The Journal of Physical Chemistry. a·Joanna ZapałaMarcin Gronowski

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