6/15/2023 0 Comments Manico madridThus, laboratory astrophysics arises from the interplay between astronomers, physicists and chemists to synergistically address the chemical evolution of matter in the Universe. By simulating in the laboratory the conditions of different regions of the Universe, it is possible not only to test hypotheses derived from astronomical observations and models, but also to provide the astronomers with plausible chemical and physical mechanisms that may operate in space, which would help in the correct interpretation of the results derived from observations and physico-chemical modelling. Laboratory astrophysics and astrochemistry constitutes a very powerful tool for investigating the fundamental physical and chemical processes governing the evolution of matter in space. Aliphatics are part of the carbonaceous cosmic dust and, recently, aliphatics and short n-alkanes have been detected in -situ in the comet 67P/Churyumov-Gerasimenko. To demonstrate some of the capabilities of INFRA-ICE, we present selected results on the UV photochemistry of undecane (C 11H 24) at 14 K. As such, INFRA-ICE expands the capabilities of Stardust allowing the simulation of the complete journey of cosmic dust in space, from its formation in asymptotic giant branch stars (AGBs) to its processing and interaction with icy mantles in molecular clouds. ![]() The INFRA-ICE machine can be operated as a standing alone setup or incorporated in a larger experimental station called Stardust, which is dedicated to simulate the formation of cosmic dust in evolved stars. Here, we present a new ultra-high vacuum experimental station devoted to simulate the complex conditions of the coldest regions of the ISM. In particular, in the dark clouds of the ISM dust grains are coated by icy mantles and it is thought that the ice-dust interaction plays a crucial role in the development of the chemical complexity observed in space. ![]() Amongst the diverse astrochemical problems that can be addressed in the laboratory the evolution of cosmic dust grains in the different regions of the interstellar medium (ISM) and its role in the formation of new chemical species through catalytic processes present significant interest. Laboratory astrochemistry aims at simulating in the laboratory some of the chemical and physical processes that operate in different regions of the Universe.
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