Results 51 to 60 of about 376,241 (261)
Planetesimal formation during protoplanetary disk buildup [PDF]
Astronomy & Astrophysics, 2018 Context. Models of dust coagulation and subsequent planetesimal formation are usually computed on the backdrop of an already fully formed protoplanetary disk model.
J. Dra̧żkowska, C. Dullemond
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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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Three-dimensional SPH Simulations of FU Orionis Star Flares in the Clumpy Accretion Model
The Astrophysical Journal, 2023 One of the early hypotheses about the origin of FU Orionis star (FUORs) outbursts explains them based on the fall of gas clumps from the remnants of protostellar clouds onto protoplanetary disks surrounding young stars.
Tatiana V. Demidova, Vladimir P. Grinin
doaj +1 more source
Dynamics of Protoplanetary Disks [PDF]
Annual Review of Astronomy and Astrophysics, 2011 Protoplanetary disks are quasi-steady structures whose evolution and dispersal determine the environment for planet formation. I review the theory of protoplanetary disk evolution and its connection to observations. Substantial progress has been made in elucidating the physics of potential angular momentum transport processes—including self-gravity ...
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Dust Evolution in Protoplanetary Disks [PDF]
, 2014 Accepted for publication as a chapter in Protostars and Planets VI, University of Arizona Press (2014), eds. H. Beuther, R. Klessen, C.
L. Testi +10 more
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Upper limits on CH3OH in the HD 163296 protoplanetary disk [PDF]
Astronomy & Astrophysics, 2019 Context. Methanol (CH3OH) is at the root of organic ice chemistry in protoplanetary disks. Its connection to prebiotic chemistry and its role in the chemical environment of the disk midplane make it an important target for disk chemistry studies. However,
M. Carney +8 more
semanticscholar +1 more source
The Inner Regions of Protoplanetary Disks [PDF]
Annual Review of Astronomy and Astrophysics, 2010 To understand how planetary systems form in the dusty disks around pre-main-sequence stars, a detailed knowledge of the structure and evolution of these disks is required. Although this is reasonably well understood for the regions of the disk beyond about 1 AU, the structure of these disks inward of 1 AU remains a puzzle. This is partly because it is
Cornelis P. Dullemond, John D. Monnier
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Midplane temperature and outer edge of the protoplanetary disk around HD 163296 [PDF]
Astronomy & Astrophysics, 2019 Knowledge of the midplane temperature of protoplanetary disks is one of the key ingredients in theories of dust growth and planet formation. However, direct measurement of this quantity is complicated, and often depends on the fitting of complex models ...
C. Dullemond +4 more
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Zooming in on the Formation of Protoplanetary Disks [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractWe use the adaptive mesh refinement code RAMSES to model the formation of protoplanetary disks in realistic star formation environments. The resolution scales over up to 29 powers of two (~ 9 orders of magnitude) covering a range from outer scales of 40 pc to inner scales of 0.015 AU. The accretion rate from a 1.5 solar mass envelope peaks near
Nordlund, Åke +4 more
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Shadowing and multiple rings in the protoplanetary disk of HD 139614 [PDF]
Astronomy & Astrophysics, 2019 Context. Shadows in scattered light images of protoplanetary disks are a common feature and support the presence of warps or misalignments between disk regions.
G. Muro-Arena +22 more
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