Global Protoplanetary Disk Simulations: Dead Zone Formation and FUor Outbursts
نویسندگان
چکیده
منابع مشابه
The magnetorotational instability across the dead zone of protoplanetary disks
The magnetorotational instability across the dead zone of protoplanetary disks
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Context. Protostellar accretion discs have cool, dense midplanes where externally originating ionisation sources such as X–rays or cosmic rays are unable to penetrate. This suggests that for a wide range of radii, MHD turbulence can only be sustained in the surface layers where the ionisation fraction is sufficiently high. A dead zone is expected to exist near the midplane, such that active acc...
متن کاملProtoplanetary Disk Structures in Ophiuchus
We present the results of a high angular resolution (0. 3 ≈ 40AU) Submillimeter Array survey of the 345GHz (870μm) thermal continuum emission from 9 of the brightest, and therefore most massive, circumstellar disks in the ∼1Myr-old Ophiuchus starforming region. Using two-dimensional radiative transfer calculations, we simultaneously fit the observed continuum visibilities and broadband spectral...
متن کاملPlanet formation and protoplanetary dust
Planet formation is a very complex process through which initially submicron-sized dust grains evolve into rocky, icy, and giant planets. The physical growth is accompanied by chemical, isotopic, and thermal evolution of the disk material, processes important to understanding how the initial conditions determine the properties of the forming planetary systems. Here we review the principal stage...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2018
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921319001650