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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 308566.0, MPI für Astronomie / Publikationen_mpia
Gas-phase CO in protoplanetary disks: A challenge for turbulent mixing
Authors:Semenov, D.; Wiebe, D.; Henning, T.
Date of Publication (YYYY-MM-DD):2006
Journal Abbrev.:The Astrophysical Journal
Volume:647
Start Page:L57
End Page:L60
Audience:Not Specified
Abstract / Description:This is the first paper in a series in which we study the influence of turbulent diffusion and advective transport on the chemical evolution of protoplanetary disks, using a 2D flared-disk model and a 2D-mixing gas-grain chemical code with surface reactions. A first interesting result concerns the abundance of gas-phase CO in the outer regions of protoplanetary disks. In this Letter we argue that the gas-phase CO concentration in the disk regions, where the temperature is lower than ~25 K, can be significantly enhanced due to the combined effect of vertical and radial mixing. This finding has a potential implication for the current observational data on the DM Tau disk chemistry.
Free Keywords:Accretion; Accretion Disks; Astrochemistry; Stars: Circumstellar Matter; Molecular Processes; Stars: Planetary Systems: Protoplanetary Disks; Turbulence
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi...
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