Protoplanetary Disc
Cometary ices in forming protoplanetary disc midplanes
... (‘hot’ disc start scenario) ver- sus the cold prestellar phase and warm protoplanetary disc (‘cold’ cloud start scenario) is one of the major differences between the ap- proaches of the Solar system ...
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Cometary ices in forming protoplanetary disc midplanes
... (‘hot’ disc start scenario) ver- sus the cold prestellar phase and warm protoplanetary disc (‘cold’ cloud start scenario) is one of the major differences between the ap- proaches of the Solar system ...
17
Methanol along the path from envelope to protoplanetary disc
... a protoplanetary disc shows strong chemical differentiation according to ...infall-dominated disc, further enrichment occurs thanks to methanol ice formation within the disc ...
17
Grand Challenges in Protoplanetary Disc Modelling
... of protoplanetary discs are also ex- tremely ...the disc, hydrodynamic torques in the disc, radiation from the parent star or other nearby stars, dust, and (non-ideal) magneto- hydrodynamics all play ...
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Gas Dust Protoplanetary Disc: Modeling Collisional Interaction of Primordial Bodies
... “hot” protoplanetary disk model that is based on the accumulated experimental data on the discrepancy between the abundances of many elements on the Sun, in undifferentiated meteorites ...
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The time evolution of dusty protoplanetary disc radii: observed and physical radii differ
... ing disc radii inferred from the sub-mm continuum emission as a probe of viscous ...the disc is ...sured disc radii in C 18 O and observational studies are still relying on the dust component of ...
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Grand Challenges in Protoplanetary Disc Modelling
... of protoplanetary discs are also ex- tremely ...the disc, hydrodynamic torques in the disc, radiation from the parent star or other nearby stars, dust, and (non-ideal) magnetic fields all play ...
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A circumbinary protoplanetary disc in a polar configuration
... the disc (red), which intersect at an angle of 16 ◦ from South (i.e. the disc position ...the disc inclination of 154 ◦ ...the disc L c (dotted), and the ...
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Effects of photoevaporation on protoplanetary disc `isochrones'
... specific disc isochrones in the accretion rate–disc mass ...gas disc dispersal of the innermost region, introducing another (shorter) time-scale for this ...the disc evolution, finding ...
7
Hydrodynamic ablation of protoplanetary disks via supernovae
... a protoplanetary disc subject to the effect of a nearby ...of disc masses and inclination angles. We find disc mass-loss rates that are typically 10 − 7 –10 − 6 M yr − 1 (but they peak near 10 ...
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Circumbinary, not transitional: on the spiral arms, cavity, shadows, fast radial flows, streamers, and horseshoe in the HD 142527 disc
... HD142527 protoplanetary disc, a bright and well studied disc that shows spirals and shadows in scattered light around a 100 au gas cavity, a large horseshoe dust structure in mm continuum emission, ...
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The formation and stability of vortices in protoplanetary disks
... Figure 1. Vortices produced through the instability of the edge of a gap produced by a Saturn-mass planet in a disc with aspect ratio 0.05. The values of the relative surface density change from the background ...
8
Dust in protoplanetary disks: observations
... At mid-infrared wavelengths, strong vibrational resonances of abundant dust species are detected both in absorption (bright background stars detected through cold molecular cloud dust), and in emis- sion (circumstellar ...
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The puzzle of protoplanetary disk masses
... Protoplanetary disks have been extensively studied in the past decades with infrared (IR) surveys (Haisch et al. 2001; Hern´andez et al. 2007; Evans et al. 2009). Further- more, several attempts have been carried ...
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Radiation thermo chemical models of protoplanetary disks : grain and polycyclic aromatic hydrocarbon charging
... in protoplanetary disks is computed consistently with the ohmic and ambipolar diffusion, whose resistivities depend on the abundance of the charge carriers (free electrons, gas-phase atomic and molecular cations, ...
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Complex organic molecules in protoplanetary disks
... on protoplanetary disk chemistry (see, ...a protoplanetary disk including dust evolution and radiative transfer, and subsequently calculated the chemical ...
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Nitrogen isotope fractionation in protoplanetary disks
... Our model combines the reaction networks of Bruderer et al. (2012) and Loison et al. (2014) into a new reduced network for the C/N/O chemistry throughout a protoplanetary disk. Cross- checks against the full UMIST ...
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C13 877 Sperry V77 pdf
... Disc Memory Drive; 30.6 million 16-bit words Disc Pack Disc Memory Drive; 58.1 million 16-bit words Disc Pack Disc Memory Drive; 116.3 million 16-bit words Disc Pack Disc Memory Controll[r] ...
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High angular resolution studies of protoplanetary discs
... the disc structure at a larger ...dense disc mid- ...long-wavelength disc emission in order to quantify the grain growth ongoing in different disc ...the disc content. This process can ...
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Bryan total disc arthroplasty: a replacement disc for cervical disc disease
... Figure 9 Pivoting moves (double arrow) are applied to the milling disc during preparation of the vertebral recess. Note the thecal sac containing the myelon next to the posterior rim of the milling disc. ...
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