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hal.structure.identifierAMOR 2017
dc.contributor.authorVIDAL, Thomas
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorLOISON, Jean-Christophe
dc.contributor.authorYASSIN JAZIRI, Adam
hal.structure.identifierAMOR 2017
dc.contributor.authorRUAUD, M.
hal.structure.identifierAMOR 2017
dc.contributor.authorGRATIER, P.
hal.structure.identifierAMOR 2017
dc.contributor.authorWAKELAM, Valentine
dc.date.issued2017
dc.identifier.issn1745-3933
dc.description.abstractEnSulphur-bearing species are often used to probe the physical structure of star forming regions of the interstellar medium, but the chemistry of sulphur in these regions is still poorly understood. In dark clouds, sulphur is supposed to be depleted under a form which is still unknown despite numerous observations and chemical modeling studies that have been performed. In order to improve the modeling of sulphur chemistry, we propose an enhancement of the sulphur chemical network using experimental and theoretical literature. We test the effect of the updated network on the outputs of a three phases gas-grain chemical model for dark cloud conditions using different elemental sulphur abundances. More particularly, we focus our study on the main sulphur reservoirs as well as on the agreement between model predictions and the abundances observed in the dark cloud TMC-1 (CP). Our results show that depending on the age of the observed cloud, the reservoir of sulphur could either be atomic sulphur in the gas-phase or HS and H2S in icy grain bulks. We also report the first chemical model able to reproduce the abundances of observed S-bearing species in TMC-1 (CP) using as elemental abundance of sulphur its cosmic value.
dc.language.isoen
dc.publisherOxford Journals
dc.subject.enAstrophysics - Astrophysics of Galaxies
dc.title.enOn the reservoir of sulphur in dark clouds : chemistry and elemental abundance reconciled
dc.typeArticle de revue
dc.identifier.doi10.1093/mnras/stx828
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.identifier.arxiv1704.01404
bordeaux.journalMonthly Notices of the Royal Astronomical Society: Letters
bordeaux.page435-447
bordeaux.volume469
bordeaux.peerReviewedoui
hal.identifierhal-01509533
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01509533v1
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