New Composite Models of Partially Ionized Protoplanetary Disks
نویسندگان
چکیده
منابع مشابه
Chemistry in protoplanetary disks.
3 Material Inventory and Fundamental Chemical Processes in Disks 14 3.1 Inventory of Gas-Phase Molecules . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1.1 Results from (Sub-)millimeter Spectroscopy . . . . . . . . . . . . . . . . . 15 3.1.2 Results from Far-Infrared Spectroscopy . . . . . . . . . . . . . . . . . . . 17 3.1.3 Results from Midand Near-Infrared Spectroscopy . . . . . . ...
متن کاملDust in Protoplanetary Disks
We critically examine the best lines of evidence for grain growth in protoplanetary disks, based on modelling of observed spectral energy distributions and images of T Tauri and Herbig Ae stars. The data are consistent with millimeter-sized grains near disk midplanes, and micron-sized grains near disk surfaces. We review three channels by which grains can grow, including direct condensation fro...
متن کاملVortices in Protoplanetary Disks
We use a high order accuracy spectral code to carry out two-dimensional time-dependent numerical simulations of vortices in accretion disks. In particular , we examine the stability and the life time of vortices in circumstellar disks around young stellar objects. The results show that cyclonic vortices dissipate quickly, while anticyclonic vortices can survive in the flow for many orbits. When...
متن کاملModels of the Structure and Evolution of Protoplanetary Disks
We review advances in the modeling of protoplanetary disks. This review will focus on the regions of the disk beyond the dust sublimation radius, i.e. beyond 0.1 1 AU, depending on the stellar luminosity. We will be mostly concerned with models that aim to fit spectra of the dust continuum or gas lines, and derive physical parameters from these fits. For optically thick disks, these parameters ...
متن کاملSilica in Protoplanetary Disks
Mid-infrared spectra of a few T Tauri stars (TTS) taken with the Infrared Spectrograph on board the Spitzer Space Telescope show prominent narrow emission features indicating silica (crystalline silicon dioxide). Silica is not a major constituent of the interstellar medium; therefore, any silica present in the circumstellar protoplanetary disks of TTS must be largely the result of processing of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2008
ISSN: 0004-637X,1538-4357
DOI: 10.1086/592597