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Formation of planetary systems by pebble accretion and migration: Growth of gas giants
(2019-03-01)
Giant planets migrate though the protoplanetary disc as they grow their solid core and attract their gaseous envelope. Previously, we have studied the growth and migration of an isolated planet in an evolving disc. Here, ...
The diversity of planetary systems architectures: contrasting theory with observations
(Royal Astronomical Society, 2011-10)
In order to explain the observed diversity of planetary system architectures and relate this primordial diversity to the initial properties of the discs where they were born, we develop a semi-analytical model for computing ...
Planet heating prevents inward migration of planetary cores
(Nature Publishing Group, 2015-04)
Planetary systems are born in the disks of gas, dust and rocky fragments that surround newly formed stars. Solid content assembles into ever-larger rocky fragments that eventually become planetary embryos. These then ...
Multi-planet extrasolar systems - detection and dynamics
(NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCESBEIJING, 2012)
20 years after the discovery of the first planets outside our solar system, the current exoplanetary population includes more than 700 confirmed planets around main sequence stars. Approximately 50% belong to multiple-planet ...
A possible stellar metallic enhancement in post-T Tauri stars by a planetesimal bombardment
(Blackwell Publishing, 2007-07-11)
The photospheres of stars hosting planets have larger metallicity than stars lacking planets. This could be the result of a metallic star contamination produced by the bombarding of hydrogen-deficient solid bodies. In the ...
Adapting a solid accretion scenario for migrating planets in FARGO3D
(2019-12-01)
In this work, we adapt a module for planetary formation within the hydrodynamic code FARGO3D. Planetary formation is modelled by a solid core accretion scenario, with the core growing in oligarchic regime. The initial ...
Reliability of orbital fits for resonant extrasolar planetary systems: the case of HD82943
(BLACKWELL PUBLISHING, 2008)
We perform a statistical study of the process of orbital determination of the HD82943 extrasolar planetary system, using the current observational data set of N = 165 radial velocity (RV) measurements. Our aim is to analyse ...