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相关论文: Terrestrial Planet Formation in Disks with Varying…

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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…

地球与行星天体物理 · 物理学 2015-06-18 Sean N. Raymond , Eiichiro Kokubo , Alessandro Morbidelli , Ryuji Morishima , Kevin J. Walsh

We use resistive magnetohydrodynamical simulations with the nested grid technique to study the formation of protoplanetary disks around protostars from molecular cloud cores that provide the realistic environments for planet formation. We…

地球与行星天体物理 · 物理学 2015-05-14 Shu-ichiro Inutsuka , Masahiro N. Machida , Tomoaki Matsumoto

The presented work investigates the possible formation of terrestrial planets in the habitable zone (HZ) of the exoplanetary system HD 141399. In this system the HZ is located approximately between the planets c (a = 0.7 au) and d (a = 2.1…

地球与行星天体物理 · 物理学 2019-08-14 R. Dvorak , B. Loibnegger , L. Y. Zhou , L. Zhou

We review the current theoretical understanding how growth from micro-meter sized dust to massive giant planets occurs in disks around young stars. After introducing a number of observational constraints from the solar system, from observed…

地球与行星天体物理 · 物理学 2010-12-24 Christoph Mordasini , Hubert Klahr , Yann Alibert , Willy Benz , Kai-Martin Dittkrist

A rapidly growing body of observational results suggests that planet formation takes place preferentially at high metallicity. In the core accretion model of planet formation this is expected because heavy elements are needed to form the…

地球与行星天体物理 · 物理学 2015-06-04 Jarrett L. Johnson , Hui Li

Recent observations of rocky super-Earths have revealed an apparent wider distribution of Fe/Mg ratios, or core to mantle ratios, than the planets in our Solar System. This study aims to understand how much of the chemical diversity in the…

地球与行星天体物理 · 物理学 2020-03-04 Jennifer Scora , Diana Valencia , Alessandro Morbidelli , Seth A. Jacobson

We propose a pebble-driven core accretion scenario to explain the formation of giant planets around the late-M dwarfs of $M_{\star}{=}0.1{-}0.2 \ M_{\odot}$. In order to explore the optimal disk conditions for giant planet, we perform…

地球与行星天体物理 · 物理学 2023-11-20 Mengrui Pan , Beibei Liu , Anders Johansen , Masahiro Ogihara , Su Wang , Jianghui Ji , Sharon X. Wang , Fabo Feng , Ignasi Riba

In this work, we extensively investigate the terrestrial planetary formation for the inclined planetary systems (considering the OGLE-2006-BLG-109L system as prototype) in the late stage. In the simulations, we show that the occurrence of…

地球与行星天体物理 · 物理学 2011-12-07 Sheng Jin , Jianghui Ji

The increasing number of newly detected exoplanets at short orbital periods raises questions about their formation and migration histories. A particular puzzle that requires explanation arises from one of the key results of the Kepler…

地球与行星天体物理 · 物理学 2019-10-16 Mario Flock , Neal J. Turner , Gijs D. Mulders , Yasuhiro Hasegawa , Richard P. Nelson , Bertram Bitsch

In this paper, we calculate simulated scattered light images of a circumstellar disk in which a planet is forming by gravitational instability. The simulated images bear no correlation to the vertically integrated surface density of the…

天体物理学 · 物理学 2009-11-13 Hannah Jang-Condell , Alan P. Boss

Giant planets have been discovered at large separations from the central star. Moreover, a striking number of young circumstellar disks have gas and/or dust gaps at large orbital separations, potentially driven by embedded planetary…

地球与行星天体物理 · 物理学 2022-07-08 Hans Baehr , Zhaohuan Zhu , Chao-Chin Yang

The final stage of terrestrial planet formation is known as the giant impact stage where protoplanets collide with one another to form planets. So far this stage has been mainly investigated by N-body simulations with an assumption of…

地球与行星天体物理 · 物理学 2015-05-18 Eiichiro Kokubo , Hidenori Genda

Much of a planet's composition could be determined right at the onset of formation. Laboratory experiments can constrain these early steps. This includes static tensile strength measurements or collisions carried out under Earth's gravity…

地球与行星天体物理 · 物理学 2018-08-31 Gerhard Wurm

We present observational evidence of environmental effects on the formation and evolution of planetary systems. We combine catalogues of resolved protoplanetary discs (PPDs) and young stellar objects in the solar neighbourhood to analyse…

太阳与恒星天体物理 · 物理学 2012-10-16 M. de Juan Ovelar , J. M. D. Kruijssen , E. Bressert , L. Testi , N. Bastian , H. Canovas Cabrera

Planet formation occurs over a few Myr within protoplanetary discs of dust and gas, which are often assumed to evolve in isolation. However, extended gaseous structures have been uncovered around many protoplanetary discs, suggestive of…

地球与行星天体物理 · 物理学 2024-08-09 Andrew J. Winter , Myriam Benisty , Sean M. Andrews

Young terrestrial planets, when they are still embedded in a circumstellar disk, accumulate an atmosphere of nebula gas. The evolution and eventual evaporation of the protoplanetary disk affect the structure and dynamics of the planetary…

地球与行星天体物理 · 物理学 2015-06-03 Alexander Stoekl , Ernst Dorfi , Helmut Lammer

We develop a semi-analytical model for computing planetary system formation with the aim of explaining the observed diversity of planetary systems architectures and relate this primordial diversity with the initial properties of the disc…

地球与行星天体物理 · 物理学 2015-05-28 Yamila Miguel , Octavio M. Guilera , Adrian Brunini

According to the sequential accretion model, giant planet formation is based first on the formation of a solid core which, when massive enough, can gravitationally bind gas from the nebula to form the envelope. In order to trigger the…

地球与行星天体物理 · 物理学 2015-06-11 A. Fortier , Y. Alibert , F. Carron , W. Benz , K. -M. Dittkrist

Prevailing $N$-body planet formation models typically start with lunar-mass embryos and show a general trend of rapid migration of massive planetary cores to the inner Solar System in the absence of a migration trap. This setup cannot…

地球与行星天体物理 · 物理学 2024-03-27 Tommy Chi Ho Lau , Man Hoi Lee , Ramon Brasser , Soko Matsumura

A large fraction of stars host one or multiple close-in super-Earth planets. There is an active debate about whether these planets formed in situ or at greater distances from the central star and migrated to their current position. It has…

地球与行星天体物理 · 物理学 2015-06-03 Masahiro Ogihara , Alessandro Morbidelli , Tristan Guillot