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The influence of chemical environment on the infrared spectra of embedded molecules in astrophysical ices

Published online by Cambridge University Press:  04 September 2018

Victor S. Bonfim Open the ORCID record for Victor S. Bonfim [Opens in a new window]  and
Sergio Pilling
Victor S. Bonfim
Affiliation:
Instituto de Pesquisa e Desenvolvimento, Universidade do Vale do Paraíba - UNIVAP, Av. Shishima Hifumi, 2911, Urbanova, São José dos Campos, SP - Brazil email: victordsb@gmail.com
Sergio Pilling
Affiliation:
Instituto de Pesquisa e Desenvolvimento, Universidade do Vale do Paraíba - UNIVAP, Av. Shishima Hifumi, 2911, Urbanova, São José dos Campos, SP - Brazil email: victordsb@gmail.com Instituto Tecnológico de Aeronáutica, ITA - DCTA Praça Marechal Eduardo Gomes, 50 - Vila das Acacias, São José dos Campos, SP - Brazil email: sergiopilling@yahoo.com.br
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Abstract

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In this work, one intends to computationally simulate and investigate, via thermochemical calculations, how the chemical environment influences some molecular properties, such as IR spectra and absorption cross section, of individual species embedded in the solid phase employing the Polarized Continuum Model (PCM) approach. The trial molecules used here to check these effects are CO, CO2 and H2O. The solid phase (bulk ice) is simulated using different dielectric constant values representing different types of astrophysical ice at PCM approach. The effect of temperature is also investigated since it is known it affects the dielectric constant of the solvent medium.

Keywords

ISM: moleculesabundancesinfrared: generaldense matterastrochemistry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S332: Astrochemistry VII: Through the Cosmos from Galaxies to Planets , March 2017 , pp. 346 - 352
Copyright
Copyright © International Astronomical Union 2018 

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