Results 71 to 80 of about 394,629 (288)
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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Kinematic Evidence of an Embedded Protoplanet in HD 142666 Identified by Machine Learning
The Astrophysical Journal, 2023 Observations of protoplanetary disks have shown that forming exoplanets leave characteristic imprints on the gas and dust of the disk. In the gas, these forming exoplanets cause deviations from Keplerian motion, which can be detected through molecular ...
J. P. Terry +3 more
doaj +1 more source
Protoplanetary disk lifetimes vs stellar mass and possible implications for giant planet populations
, 2015 We study the dependence of protoplanetary disk evolution on stellar mass using a large sample of young stellar objects in nearby young star-forming regions. We update the protoplanetary disk fractions presented in our recent work (paper I of this series)
Bouy, Hervé +2 more
core +1 more source
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
semanticscholar +1 more source
The origin of short-lived radionuclides and the astrophysical environment of solar system formation
, 2008 Based on early solar system abundances of short-lived radionuclides (SRs), such as $^{26}$Al (T$_{1/2} = 0.74$ Myr) and $^{60}$Fe (T$_{1/2} = 1.5$ Myr), it is often asserted that the Sun was born in a large stellar cluster, where a massive star ...
Amelin Y. +15 more
core +1 more source
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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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
, 2010 There has been disagreement currently about whether cooling in protoplanetary disks can be sufficiently fast to induce the formation of gas giant protoplanets via gravitational instabilities.
Boley +38 more
core +1 more source
Transport of First Rocks of The Solar System by X-winds [PDF]
, 2010 It has been suggested that chondrules and calcium-aluminum-rich inclusions (CAIs) were formed at the inner edge of the protoplanetary disk and then entrained in magnetocentrifugal X-winds. We study trajectories of such solid bodies with the consideration
Desch +9 more
core +2 more sources
The Evolution of Protoplanetary Disk Edges [PDF]
The Astrophysical Journal, 2004 We investigate gap formation in gaseous protostellar disks by a planet in a circular orbit in the limit of low disk viscosity. This regime may be appropriate to an aging disk after the epoch of planet formation. We find that the distance of planet to the gap outer boundary can be between the location of the $m=2$ and $m=1$ outer Lindblad resonances ...
Varniere, P., Quillen, A.C., Frank, A.
openaire +4 more sources