New Constraints From Dust Lines on the Surface Densities of Protoplanetary Disks [PDF]
Astrophysical Journal, 2019 We present new determinations of disk surface density, independent of an assumed dust opacity, for a sample of seven bright, diverse, protoplanetary disks using measurements of disk dust lines.
D. Powell +4 more
semanticscholar +1 more source
Interferometry and the study of protoplanetary disks [PDF]
EPJ Web of Conferences, 2015 Interferometry offers access to scales that are unresolvable using single dish telescopes, which is especially important when investigating objects with small angular sizes, such as protoplanetary disks. This Chapter introduces the concept of interferometry, and describes the basic aspects of interferometric observations when considering long (i.e. sub-
Ilee, John David, Greaves, Jane Sophia
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Transport of CO in Protoplanetary Disks: Consequences of Pebble Formation, Settling, and Radial Drift [PDF]
Astrophysical Journal, 2018 Current models of (exo)planet formation often rely on a large influx of so-called “pebbles” from the outer disk into the planet formation region.
S. Krijt +3 more
semanticscholar +1 more source
Gas-phase CO in protoplanetary disks: a challenge for turbulent mixing [PDF]
Astrophys.J.647:L57-L60,2006, 2006 This is the first paper in a series where 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.
arxiv +1 more source
Including Dust Coagulation in Hydrodynamic Models of Protoplanetary Disks: Dust Evolution in the Vicinity of a Jupiter-mass Planet [PDF]
Astrophysical Journal, 2019 Dust growth is often neglected when building models of protoplanetary disks due to its complexity and computational expense. However, it does play a major role in shaping the evolution of protoplanetary dust and planet formation.
J. Dra̧żkowska +4 more
semanticscholar +1 more source
CHEMICAL PROCESSES IN PROTOPLANETARY DISKS [PDF]
The Astrophysical Journal, 2010 24 pages, 13 figures, accepted for publication in ...
Walsh, C, Millar, TJ, Nomura, H
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Sulfur Chemistry in Protoplanetary Disks: CS and H2CS [PDF]
Astrophysical Journal, 2019 The nature and abundance of sulfur chemistry in protoplanetary disks (PPDs) may impact the sulfur inventory on young planets and therefore their habitability.
R. Le Gal +4 more
semanticscholar +1 more source
On the Gravitational Instabilities of Protoplanetary Disks [PDF]
Publications of the Astronomical Society of the Pacific, 2019 The gravitational instabilities are important to the evolution of the disks and the planet formation in the disks. We calculate the evolution of the disks which form from the collapse of the molecular cloud cores. By changing the properties of the cloud cores and the hydrodynamical viscosity parameters, we explore their effects on the properties of the
Ning Sui, Ping He, Min Li
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Protoplanetary Disk Resonances and Type I Migration [PDF]
2011, ApJ, 741, 109, 2011 Waves reflected by the inner edge of a protoplanetary disk are shown to significantly modify Type I migration, even allowing the trapping of planets near the inner disk edge for small planets in a range of disk parameters. This may inform the distribution planets close to their central stars, as observed by the Kepler mission.
arxiv +1 more source
Temperature Structure in the Inner Regions of Protoplanetary Disks: Inefficient Accretion Heating Controlled by Nonideal Magnetohydrodynamics [PDF]
Astrophysical Journal, 2019 The gas temperature in protoplanetary disks (PPDs) is determined by a combination of irradiation heating and accretion heating, with the latter conventionally attributed to turbulent dissipation. However, recent studies have suggested that the inner disk
S. Mori, X. Bai, S. Okuzumi
semanticscholar +1 more source