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相关论文: The Intrinsic Neptune Trojan Orbit Distribution: I…

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The minor planets on orbits that are dynamically stable in Neptune's 1:1 resonance on Gyr timescales were likely emplaced by Neptune's outward migration. We explore the intrinsic libration amplitude, eccentricity, and inclination…

We present the results of detailed dynamical simulations of the effect of the migration of the four giant planets on both the transport of pre-formed Neptune Trojans, and the capture of new Trojans from a trans-Neptunian disk. We find that…

地球与行星天体物理 · 物理学 2014-11-20 P. S. Lykawka , J. Horner , B. W. Jones , T. Mukai

We present results examining the fate of the Trojan clouds produced in our previous work. We find that the stability of Neptunian Trojans seems to be strongly correlated to their initial post-migration orbital elements, with those objects…

地球与行星天体物理 · 物理学 2011-12-16 Patryk Sofia Lykawka , Jonathan Horner , Barrie W. Jones , Tadashi Mukai

Jupiter Trojans are are characterized by dark photometric colors, high inclinations and an asymmetry in number of bodies between the two swarms. Different models have been proposed to explain the high inclination of the Trojans and to…

地球与行星天体物理 · 物理学 2020-01-08 Simona Pirani , Anders Johansen , Alexander J. Mustill

We explore planetary migration scenarios for formation of high inclination Neptune Trojans (NTs) and how they are affected by the planetary migration of Neptune and Uranus. If Neptune and Uranus's eccentricity and inclination were damped…

地球与行星天体物理 · 物理学 2016-03-16 Yuan-Yuan Chen , Yuehua Ma , Jiaqing Zheng

Of the four giant planets in the Solar system, only Jupiter and Neptune are currently known to possess swarms of Trojan asteroids - small objects that experience a 1:1 mean motion resonance with their host planet. In Lykawka et al. (2009),…

地球与行星天体物理 · 物理学 2011-10-11 P. S. Lykawka , J. Horner

The stability of Trojan type orbits around Neptune is studied. As the first part of our investigation, we present in this paper a global view of the stability of Trojans on inclined orbits. Using the frequency analysis method based on the…

地球与行星天体物理 · 物理学 2015-05-13 Li-Yong Zhou , Rudolf Dvorak , Yi-Sui Sun

Jupiter Trojans are thought to be survivors of a much larger population of planetesimals that existed in the planetary region when planets formed. They can provide important constraints on the mass and properties of the planetesimal disk,…

地球与行星天体物理 · 物理学 2015-06-15 David Nesvorny , David Vokrouhlicky , Alessandro Morbidelli

Much of the dynamical structure of the Kuiper belt can be explained if Neptune migrated over several AU, and/or if Neptune was scattered to an eccentric orbit during planetary instability. An outstanding problem with the existing formation…

地球与行星天体物理 · 物理学 2015-08-19 David Nesvorny

The problem of accretion in the Trojan 1:1 resonance is akin to the standard problem of planet formation, transplanted from a star-centered disk to a disk centered on the Lagrange point. The newly discovered class of Neptune Trojans…

天体物理学 · 物理学 2009-11-10 E. I. Chiang , Y. Lithwick

By examining the absolute magnitude (H) distributions (hereafter HD) of the cold and hot populations in the Kuiper belt and of the Trojans of Jupiter, we find evidence that the Trojans have been captured from the outer part of the…

地球与行星天体物理 · 物理学 2009-03-06 Morbidelli Alessandro , Harold F. Levison , William Bottke , Luke Dones , David Nesvorny

In this work, we investigate the dynamical stability of pre-formed Neptune Trojans under the gravitational influence of the four giant planets in compact planetary architectures, over 10 Myr. In our modelling, the initial orbital locations…

地球与行星天体物理 · 物理学 2010-07-16 P. S. Lykawka , J. Horner , B. W. Jones , T. Mukai

In a previous paper, we have presented a global view of the stability of Neptune Trojan (NT hereafter) on inclined orbit. We discuss in this paper the dependence of stability of NT orbits on the eccentricity. High-resolution dynamical maps…

地球与行星天体物理 · 物理学 2015-05-19 Li-Yong Zhou , Rudolf Dvorak , Yi-Sui Sun

We have performed a detailed dynamical study of the recently identified Neptunian Trojan 2004 KV18, only the second object to be discovered librating around Neptune's trailing Lagrange point, L5. We find that 2004 KV18 is moving on a highly…

地球与行星天体物理 · 物理学 2012-07-18 Jonathan Horner , Patryk Sofia Lykawka

We present analytic and numerical results which illustrate the effects of Jupiter's accretion of nebular gas and the planet's radial migration on its Trojan companions. Initially, we approximate the system by the planar circular restricted…

天体物理学 · 物理学 2009-10-31 Heather J. Fleming , Douglas P. Hamilton

We investigate the survivability of Trojan-type companions of Neptune during primordial radial migration of the giant planets Jupiter, Saturn, Uranus, and Neptune. Loss of Neptune Trojans during planetary migration is not a random diffusion…

天体物理学 · 物理学 2009-11-07 Steve Kortenkamp , Renu Malhotra , Tatiana Michtchenko

We use numerical integrations to investigate the dynamical evolution of resonant Trojan and quasi-satellite companions during the late stages of migration of the giant planets Jupiter, Saturn, Uranus, and Neptune. Our migration simulations…

地球与行星天体物理 · 物理学 2015-05-27 Stephen J. Kortenkamp , Emily C. S. Joseph

The recent discovery of the first Neptune Trojan at the planet's trailing (L5) Lagrange point, 2008 LC18, offers an opportunity to confirm the formation mechanism of a member of this important tracer population for the Solar system's…

地球与行星天体物理 · 物理学 2015-06-04 J. Horner , P. S. Lykawka , M. T. Bannister , P. Francis

The dynamics of artificial asteroids on the Trojan-like orbits around Neptune is investigated in this paper. We describe the dependence of the orbital stability on the initial semimajor axis a and inclination i by constructing a dynamical…

天体物理学 · 物理学 2008-11-18 Li-Yong Zhou , Rudolf Dvorak , Yi-Sui Sun

There is an intriguing and growing population of Neptune-sized planets with stellar obliquities near $\sim90^{\circ}$. One previously proposed formation pathway is a disk-driven resonance, which can take place at the end stages of planet…

地球与行星天体物理 · 物理学 2024-10-04 Emma Louden , Sarah Millholland
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