Mostrar el registro sencillo del ítem

A New Network for Higher-temperature Gas-phase Chemistry. I. A Preliminary Study of Accretion Disks in Active Galactic Nuclei

dc.contributor.authorHARADA, Nanase
hal.structure.identifierThe Ohio State University [Columbus] [OSU]
hal.structure.identifierDepartments of Astronomy and Chemistry
dc.contributor.authorHERBST, Eric
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorWAKELAM, Valentine
dc.date.issued2010-10
dc.identifier.issn0004-637X
dc.description.abstractEnWe present a new interstellar chemical gas-phase reaction network for time-dependent kinetics that can be used for modeling high-temperature sources up to ≈800 K. This network contains an extended set of reactions based on the Ohio State University (OSU) gas-phase chemical network. The additional reactions include processes with significant activation energies, reverse reactions, proton exchange reactions, charge exchange reactions, and collisional dissociation. Rate coefficients already in the OSU network are modified for H2 formation on grains, ion-neutral dipole reactions, and some radiative association reactions. The abundance of H2O is enhanced at high temperature by hydrogenation of atomic O. Much of the elemental oxygen is in the form of water at T >= 300 K, leading to effective carbon-rich conditions, which can efficiently produce carbon-chain species such as C2H2. At higher temperatures, HCN and NH3 are also produced much more efficiently. We have applied the extended network to a simplified model of the accretion disk of an active galactic nucleus.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.title.enA New Network for Higher-temperature Gas-phase Chemistry. I. A Preliminary Study of Accretion Disks in Active Galactic Nuclei
dc.typeArticle de revue
dc.identifier.doi10.1088/0004-637X/721/2/1570
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
bordeaux.journalThe Astrophysical Journal
bordeaux.page1570-1578
bordeaux.volume721
bordeaux.peerReviewedoui
hal.identifierhal-00522006
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00522006v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20Journal&rft.date=2010-10&rft.volume=721&rft.spage=1570-1578&rft.epage=1570-1578&rft.eissn=0004-637X&rft.issn=0004-637X&rft.au=HARADA,%20Nanase&HERBST,%20Eric&WAKELAM,%20Valentine&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem