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hal.structure.identifierAMOR 2017
dc.contributor.authorWAKELAM, Valentine
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorLOISON, J.-C.
dc.contributor.authorMEREAU, R.
hal.structure.identifierAMOR 2017
dc.contributor.authorRUAUD, M.
dc.date.issued2017-01
dc.identifier.issn2405-6758
dc.description.abstractEnRecent laboratory measurements have confirmed that chemical desorption (desorption of products due to exothermic surface reactions) can be an efficient process. The impact of including this process into gas-grain chemical models entirely depends on the formalism used and the associated parameters. Among these parameters, binding energies are probably the most uncertain ones for the moment. We propose a new model to compute binding energy of species to water ice surfaces. We have also compared the model results using either the new chemical desorption model proposed by Minissale et al. (2016) or the one of Garrod et al. (2007). The new binding energies have a strong impact on the formation of complex organic molecules. In addition, the new chemical desorption model from Minissale produces a much smaller desorption of these species and also of methanol. Combining the two effects, the abundances of CH3OH and COMs observed in cold cores cannot be reproduced by astrochemical models anymore.
dc.language.isoen
dc.publisherElsevier
dc.subject.enAstrophysics - Astrophysics of Galaxies
dc.title.enBinding energies: new values and impact on the efficiency of chemical desorption
dc.typeArticle de revue
dc.identifier.doi10.1016/j.molap.2017.01.002
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.identifier.arxiv1701.06492
bordeaux.journalMolecular Astrophysics
bordeaux.page22 - 35
bordeaux.volume6
bordeaux.peerReviewedoui
hal.identifierhal-01445563
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01445563v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Molecular%20Astrophysics&rft.date=2017-01&rft.volume=6&rft.spage=22%20-%2035&rft.epage=22%20-%2035&rft.eissn=2405-6758&rft.issn=2405-6758&rft.au=WAKELAM,%20Valentine&LOISON,%20J.-C.&MEREAU,%20R.&RUAUD,%20M.&rft.genre=article


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