Results 31 to 40 of about 171,913 (339)
Near Mean Motion Resonance of Terrestrial Planet Pair Induced by Giant Planet: Application to Kepler-68 System [PDF]
MNRAS, 496, 4688-4699 (2020), 2020 In this work, we investigate configuration formation of two inner terrestrial planets near mean motion resonance (MMRs) induced by the perturbation of a distant gas-giant for the Kepler-68 system, by conducting thousands of numerical simulations. The results show that the formation of terrestrial planets is relevant to the speed of Type I migration ...
arxiv +1 more source
The Astrophysical Journal, 2023 Ocean worlds, or icy bodies in the outer solar system that have or once had subsurface liquid water oceans, are among the most compelling topics of astrobiology.
Kathleen Mandt +3 more
doaj +1 more source
The Origin of Universality in the Inner Edges of Planetary Systems
The Astrophysical Journal Letters, 2023 The characteristic orbital period of the innermost objects within the galactic census of planetary and satellite systems appears to be nearly universal, with P on the order of a few days. This paper presents a theoretical framework that provides a simple
Konstantin Batygin +2 more
doaj +1 more source
Origins of Eccentric Extrasolar Planets: Testing the Planet-Planet Scattering Model [PDF]
Astrophys.J.686:621-636,2008, 2007 (Abridged) In planetary systems with two or more giant planets, dynamical instabilities can lead to collisions or ejections through strong planet--planet scattering. Previous studies for simple initial configurations with two equal-mass planets revealed some discrepancies between the results of numerical simulations and the observed orbital elements of
arxiv +1 more source
The dispersal of planet-forming discs: theory confronts observations [PDF]
Royal Society Open Science, 2017 Discs of gas and dust around million-year-old stars are a by-product of the star formation process and provide the raw material to form planets. Hence, their evolution and dispersal directly impact what type of planets can form and affect the final ...
Barbara Ercolano, Ilaria Pascucci
doaj +1 more source
Predictions for the correlation between giant and terrestrial extrasolar planets in dynamically evolved systems [PDF]
Astrophys.J. 645 (2006) 1509-1515, 2006 The large eccentricities of many giant extrasolar planets may represent the endpoint of gravitational scattering in initially more crowded systems. If so, the early evolution of the giant planets is likely to be more restrictive of terrestrial planet formation than would be inferred from the current, dynamically quiescent, configurations.
arxiv +1 more source
Sandwiched planet formation: restricting the mass of a middle planet [PDF]
arXiv, 2023 We conduct gas and dust hydrodynamical simulations of protoplanetary discs with one and two embedded planets to determine the impact that a second planet located further out in the disc has on the potential for subsequent planet formation in the region locally exterior to the inner planet.
arxiv
Extrasolar Binary Planets I: Formation by tidal capture during planet-planet scattering [PDF]
, 2014 We have investigated i) the formation of gravitationally bounded pairs of gas-giant planets (which we call "binary planets") from capturing each other through planet-planet dynamical tide during their close encounters and ii) the following long-term orbital evolution due to planet-planet and planet-star {\it quasi-static} tides.
arxiv +1 more source
Simulations for Terrestrial Planets Formation [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractWe investigate the formation of terrestrial planets in the late stage of planetary formation using two-planet model. At that time, the protostar has formed for about 3 Myr and the gas disk has dissipated. In the model, the perturbations from Jupiter and Saturn are considered.
Zhang Niu, Zhang Niu, Ji Jianghui
openaire +6 more sources