Results 21 to 30 of about 133,492 (337)

Puzzling out the coexistence of terrestrial planets and giant exoplanets. The 2/1 resonant periodic orbits [PDF]

open access: yes, 2018
Hundreds of giant planets have been discovered so far and the quest of exo-Earths in giant planet systems has become intriguing. In this work, we aim to address the question of the possible long-term coexistence of a terrestrial companion on an orbit ...
Antoniadou, Kyriaki I.   +1 more
core   +2 more sources

Terrestrial planet compositions controlled by accretion disk magnetic field

open access: yesProgress in Earth and Planetary Science, 2021
Terrestrial planets (Mercury, Venus, Earth, and Mars) are differentiated into three layers: a metallic core, a silicate shell (mantle and crust), and a volatile envelope of gases, ices, and, for the Earth, liquid water.
William F. McDonough, Takashi Yoshizaki
doaj   +1 more source

The Occurrence Rate of Terrestrial Planets Orbiting Nearby Mid-to-late M Dwarfs from TESS Sectors 1–42

open access: yesThe Astronomical Journal, 2023
We present an analysis of a volume-complete sample of 363 mid-to-late M dwarfs within 15 pc of the Sun with masses between 0.1 and 0.3 M _⊙ observed by TESS within sectors 1–42. The median stellar mass of the sample is 0.17 M _⊙ .
Kristo Ment, David Charbonneau
doaj   +1 more source

On the formation of terrestrial planets in hot-Jupiter systems [PDF]

open access: yes, 2006
We present a series of calculations aimed at examining how an inner system of planetesimals/protoplanets, undergoing terrestrial planet formation, evolves under the influence of a giant planet undergoing inward type II migration through the region ...
Fogg, Martyn J., Nelson, Richard P.
core   +3 more sources

Mars: a small terrestrial planet [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2016
Mars is characterized by geological landforms familiar to terrestrial geologists. It has a tenuous atmosphere that evolved differently from that of Earth and Venus and a differentiated inner structure. Our knowledge of the structure and evolution of Mars has strongly improved thanks to a huge amount of data of various types (visible and infrared ...
Mangold, N.   +4 more
openaire   +5 more sources

Simulations for Terrestrial Planets Formation [PDF]

open access: yesProceedings 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

Numerical simulations for terrestrial planets formation

open access: yesEPJ Web of Conferences, 2011
We 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.
Ji J., Zhang N.
doaj   +1 more source

TOI-1695 b: A Water World Orbiting an Early-M Dwarf in the Planet Radius Valley

open access: yesThe Astronomical Journal, 2023
Characterizing the bulk compositions of transiting exoplanets within the M dwarf radius valley offers a unique means to establish whether the radius valley emerges from an atmospheric mass-loss process or is imprinted by planet formation itself.
Collin Cherubim   +41 more
doaj   +1 more source

Making the Solar System

open access: yesThe Astrophysical Journal, 2023
We model the early stages of planet formation in the solar system, including continual planetesimal formation, and planetesimal and pebble accretion onto planetary embryos in an evolving disk driven by a disk wind.
John Chambers
doaj   +1 more source

Stochasticity & Predictability in Terrestrial Planet Formation [PDF]

open access: yes, 2016
Terrestrial planets are thought to be the result of a vast number of gravitational interactions and collisions between smaller bodies. We use numerical simulations to show that practically identical initial conditions result in a wide array of final ...
Grimm, Simon L.   +3 more
core   +2 more sources

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