Infrared Spectroscopic Study on Swift-Ion Irradiation of Solid N 2 O–H 2 O Samples: Synthesis of N–O Bearing Species in Astrophysical Ices - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Physical Chemistry A Année : 2022

Infrared Spectroscopic Study on Swift-Ion Irradiation of Solid N 2 O–H 2 O Samples: Synthesis of N–O Bearing Species in Astrophysical Ices

Résumé

As of early 2022, only six species bearing an N−O bond have been detected toward cold molecular clouds and regions of star formation. It is not clear yet if the small number of N−O bond species found in the interstellar medium so far stems from physical and technological limitations of astronomical detection techniques, or whether in fact molecules that bear an N−O bond are for some reason rare in these objects of the interstellar medium. Astronomical N−O bearing molecules are important because they are part of astrochemical models which propose that they are precursors of hydroxylamine (NH2OH), a species linked to the formation of prebiotic amino acids in space. The aim of this study is the better understanding of the open question of the interstellar synthesis of N−O bearing species. We have analyzed by infrared spectroscopy an astrophysically relevant polar ice mixture of N2O:H2O processed by 90 MeV 136Xe23+ ions, which can mimic the physicochemical processes triggered by cosmic rays in water-covered interstellar ice grains. The results show the formation of N2O3 and of H2O2, but no HN−O species of any kind were detected. Such findings are discussed in light of recent studies from our group and from the literature.
Fichier non déposé

Dates et versions

hal-03932045 , version 1 (10-01-2023)

Identifiants

Citer

Alexandre Bergantini, Ana Lucia Ferreira de Barros, Naomi Nitahara Toribio, Hermann Rothard, Philippe Boduch, et al.. Infrared Spectroscopic Study on Swift-Ion Irradiation of Solid N 2 O–H 2 O Samples: Synthesis of N–O Bearing Species in Astrophysical Ices. Journal of Physical Chemistry A, 2022, 126 (12), pp.2007-2017. ⟨10.1021/acs.jpca.2c00768⟩. ⟨hal-03932045⟩
13 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More