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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. In the model, the perturbations…

Earth and Planetary Astrophysics · Physics 2010-04-09 Ji Jianghui , Zhang Niu

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. In the model, the perturbations…

Earth and Planetary Astrophysics · Physics 2009-04-29 Zhang Niu , Ji Jianghui

Massive cores of the giant planets are thought to have formed in a gas disk by accretion of pebble-size particles whose accretional cross-section is enhanced by aerodynamic gas drag [1][2]. A commonly held view is that the terrestrial…

Earth and Planetary Astrophysics · Physics 2021-09-24 M. Brož , O. Chrenko , D. Nesvorný , N. Dauphas

This paper reviews our current understanding of terrestrial planets formation. The focus is on computer simulations of the dynamical aspects of the accretion process. Throughout the chapter, we combine the results of these theoretical…

Earth and Planetary Astrophysics · Physics 2012-08-24 Alessandro Morbidelli , Jonathan I. Lunine , David P. O`brien , Sean N. Raymond , Kevin J. Walsh

Terrestrial planets form in a series of dynamical steps from the solid component of circumstellar disks. First, km-sized planetesimals form likely via a combination of sticky collisions, turbulent concentration of solids, and gravitational…

Astrophysics · Physics 2009-11-13 Sean N. Raymond

Jupiter and Saturn formed in a few million years (Haisch et al. 2001) from a gas-dominated protoplanetary disk, and were susceptible to gas-driven migration of their orbits on timescales of only ~100,000 years (Armitage 2007). Hydrodynamic…

Earth and Planetary Astrophysics · Physics 2012-01-26 Kevin J. Walsh , Alessando Morbidelli , Sean N. Raymond , David P. O'Brien , Avi M. Mandell

The dominant accretion process leading to the formation of the terrestrial planets of the Solar System is a subject of intense scientific debate. Two radically different scenarios have been proposed. The classic scenario starts from a disk…

Earth and Planetary Astrophysics · Physics 2024-11-15 Alessandro Morbidelli , Thorsten Kleine , Francis Nimmo

Models of terrestrial planet formation for our solar system have been successful in producing planets with masses and orbits similar to those of Venus and Earth. However, these models have generally failed to produce Mars-sized objects…

Earth and Planetary Astrophysics · Physics 2015-06-18 A. Izidoro , N. Haghighipour , O. C. Winter , M. Tsuchida

We discuss the current state of knowledge of terrestrial planet formation from the aspects of different planet formation models and isotopic data from 182Hf-182W, U-Pb, lithophile-siderophile elements, 48Ca/44Ca isotope samples from…

Earth and Planetary Astrophysics · Physics 2021-02-12 H. Lammer , R. Brasser , A. Johansen , M. Scherf , M. Leitzinger

Remnant planetesimals might have played an important role in reducing the orbital eccentricities of the terrestrial planets after their formation via giant impacts. However, the population and the size distribution of remnant planetesimals…

Astrophysics · Physics 2009-11-13 Ryuji Morishima , Max W. Schmidt , Joachim Stadel , Ben Moore

In spite of substantial advancements in simulating planet formation, the planet Mercury's diminutive mass, isolated orbit, and the absence of planets with shorter orbital periods in the solar system continue to befuddle numerical accretion…

Earth and Planetary Astrophysics · Physics 2021-12-22 Matthew S. Clement , Sean N. Raymond , John E. Chambers

The terrestrial planets are believed to have formed by violent collisions of tens of lunar- to Mars-size protoplanets at time t<200 Myr after the protoplanetary gas disk dispersal (t_0). The solar system giant planets rapidly formed during…

Earth and Planetary Astrophysics · Physics 2021-01-13 David Nesvorny , Fernando V. Roig , Rogerio Deienno

Our understanding of the process of terrestrial planet formation has grown markedly over the past 20 years, yet key questions remain. This review begins by first addressing the critical, earliest stage of dust coagulation and concentration.…

Earth and Planetary Astrophysics · Physics 2024-11-07 Matthew S. Clement , Andre Izidoro , Sean N. Raymond , Rogerio Deienno

The newly formed giant planets may have migrated and crossed a number of mutual mean motion resonances (MMRs) when smaller objects (embryos) were accreting to form the terrestrial planets. We investigated the effects of the…

Earth and Planetary Astrophysics · Physics 2013-08-05 Patryk Sofia Lykawka , Takashi Ito

The formation of the four terrestrial planets of the solar system is one of the most fundamental problems in the planetary sciences. However, the formation of Mercury remains poorly understood. We investigated terrestrial planet formation…

Earth and Planetary Astrophysics · Physics 2017-04-05 Patryk Sofia Lykawka , Takashi Ito

Pebbles of millimeter sizes are abundant in protoplanetary discs around young stars. Chondrules inside primitive meteorites - formed by melting of dust aggregate pebbles or in impacts between planetesimals - have similar sizes. The role of…

Earth and Planetary Astrophysics · Physics 2021-02-18 Anders Johansen , Thomas Ronnet , Martin Bizzarro , Martin Schiller , Michiel Lambrechts , Åke Nordlund , Helmut Lammer

We review the state of the field of terrestrial planet formation with the goal of understanding the formation of the inner Solar System and low-mass exoplanets. We review the dynamics and timescales of accretion from planetesimals to…

Earth and Planetary Astrophysics · Physics 2015-06-18 Sean N. Raymond , Eiichiro Kokubo , Alessandro Morbidelli , Ryuji Morishima , Kevin J. Walsh

No planets exist inside the orbit of Mercury and the terrestrial planets of the solar system exhibit a localized configuration. According to thermal structure calculation of protoplanetary disks, a silicate condensation line (~ 1300 K) is…

Earth and Planetary Astrophysics · Physics 2018-05-16 Masahiro Ogihara , Eiichiro Kokubo , Takeru K. Suzuki , Alessandro Morbidelli

We review the problem of the formation of terrestrial planets, with particular emphasis on the interaction of dynamical and geochemical models. The lifetime of gas around stars in the process of formation is limited to a few million years…

Earth and Planetary Astrophysics · Physics 2009-06-25 Jonathan I. Lunine , David P. O'Brien , Sean N. Raymond , Alessandro Morbidelli , Thomas Quinn , Amara Graps

We present results from 42 simulations of late stage planetary accretion, focusing on the delivery of volatiles (primarily water) to the terrestrial planets. Our simulations include both planetary "embryos" (defined as Moon to Mars sized…

Astrophysics · Physics 2014-10-13 Sean N. Raymond , Thomas R. Quinn , Jonathan I. Lunine
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