Results 81 to 90 of about 90,567 (226)

Semianalytical Model for the Dynamical Evolution of Planetary Systems. II. Application to Systems Formed by a Planet Formation Model

open access: yesThe Astrophysical Journal
The standard formation model of close-in low-mass planets involves efficient inward migration followed by growth through giant impacts after the protoplanetary gas disk disperses.
Tadahiro Kimura   +4 more
doaj   +1 more source

Evolutionary Tracks of Trapped, Accreting Protoplanets: the Origin of the Observed Mass-Period Relation

open access: yes, 2012
The large number of observed exoplanets ($\gtrsim $ 700) provides important constraints on their origin as deduced from the mass-period diagram of planets.
Adams   +38 more
core   +1 more source

Interlíngua: miscigenação linguística e ficção poética

open access: yesMatLit, 2015
This article addresses the issue of inter-language in the contemporary situation, a process of relationship among languages, caused mostly by mobility, migration, nomadism, war, globalization, colonization, exile and, more recently, digital ...
Matuck, Artur
doaj   +1 more source

Type I Planetary Migration with MHD Turbulence

open access: yesThe Astrophysical Journal, 2004
Submitted to ApJ on July 29th, 2003.
Laughlin, Gregory   +2 more
openaire   +2 more sources

Preventing extinction in an age of species migration and planetary change [PDF]

open access: gold, 2023
Erick Lundgren   +5 more
openalex   +1 more source

Resonant Chains and the Convergent Migration of Planets in Protoplanetary Disks

open access: yesThe Astronomical Journal
An increasing number of compact planetary systems with multiple planets in a resonant chain have been detected. The resonant chain must be maintained by convergent migration of the planets due to planet–disk interactions if it is formed before the ...
Ka Ho Wong, Man Hoi Lee
doaj   +1 more source

On the evolution of the water ocean in the plate-mantle system

open access: yesProgress in Earth and Planetary Science, 2018
Here, we investigate a possible scenario of surface seawater evolution in the numerical simulations of surface plate motion driven by mantle dynamics, including thermo-chemical convection and water migration, from the early to present-day Earth to ...
Takashi Nakagawa   +3 more
doaj   +1 more source

Stellar irradiated discs and implications on migration of embedded planets I: equilibrium discs

open access: yes, 2012
The strength and direction of migration of low mass planets depends on the disc's thermodynamics. In discs where the viscous heating is balanced by radiative transport, the migration can be directed outwards, a process which extends the lifetime of ...
Bitsch, Bertram   +4 more
core   +3 more sources

Density Waves Excited by Low-Mass Planets in Protoplanetary Disks I: Linear Regime

open access: yes, 2011
Density waves excited by planets embedded in protoplanetary disks play a central role in planetary migration and gap opening processes. We carry out 2D shearing sheet simulations to study the linear regime of wave evolution with the grid-based code ...
Bryden   +22 more
core   +1 more source

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