Innovating Works

COLLEXISM

Financiado
Collisional excitation of interstellar molecules towards reactive systems
Accurate determination of physical conditions of interstellar molecular clouds is a crucial step to better understand the life cycle of the interstellar matter and particularly the formation of stars and planets as well as the syn... Accurate determination of physical conditions of interstellar molecular clouds is a crucial step to better understand the life cycle of the interstellar matter and particularly the formation of stars and planets as well as the synthesis of organic molecules that may lead to emergence of life in the universe. A key parameter for the determination of these conditions from interstellar spectra is the calculation of accurate collisional rate coefficients of interstellar molecules with the most abundant species (H, He, H2 and e-). Whereas the knowledge of collisional processes has reached a certain level of maturity for collisions involving non-reactive molecules, very few reliable data exist for collisions involving reactive radicals and ions. The computation of such data is a real challenge since inelastic and reactive processes compete during collisions. In this project, we plan to overcome this complex problem and to provide collisional data for these radicals and ions in order to derive as much information as possible from the molecular spectra collected by current telescopes. As it is hardly possible to consider both collisional and reactive processes simultaneously, we will set up a new methodology based on quantum approach that allows obtaining accurate data. We will focus on molecular hydrides that are good candidates because of both their astrophysical importance and their quantum accessibility. We will carry out the determination of interaction potentials using quantum chemistry ab initio methods while the treatment of the dynamics of the nuclei will primarily be done using quantum time-independent reactive and non-reactive approaches. When exact quantum calculations will not be usable, innovative statistical quantum mechanical methods will also be explored. The new data will then be used in radiative transfer models and the predictions will be finally compared to observations in order to derive the abundances of reactive radicals with unprecedented accuracy. ver más
30/06/2025
UNIVREN
2M€
Perfil tecnológico estimado
Duración del proyecto: 72 meses Fecha Inicio: 2019-06-28
Fecha Fin: 2025-06-30

Línea de financiación: concedida

El organismo H2020 notifico la concesión del proyecto el día 2019-06-28
Línea de financiación objetivo El proyecto se financió a través de la siguiente ayuda:
ERC-2018-COG: ERC Consolidator Grant
Cerrada hace 6 años
Presupuesto El presupuesto total del proyecto asciende a 2M€
Líder del proyecto
UNIVERSITE DE RENNES No se ha especificado una descripción o un objeto social para esta compañía.