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The Trojan asteroids orbit about the Lagrangian points of Jupiter and the residence times about their present location are very long for most of them. If these bodies originated in the outer Solar System, they should be mainly composed of…

Earth and Planetary Astrophysics · Physics 2015-05-13 M. D. Melita , G. Strazzulla , A. Bar-Nun

Aims. The surfaces of the Trojan asteroids are steadily bombarded by interplanetary micrometeoroids, which releases ejecta of small dust particles. These particles form the faint dust arcs that are associated with asteroid clouds. Here we…

Earth and Planetary Astrophysics · Physics 2018-01-11 Xiaodong Liu , Jürgen Schmidt

Centimeter and meter sized solid particles in protoplanetary disks are trapped within long lived high pressure regions, creating opportunities for collapse into planetesimals and planetary embryos. We study the accumulations in the stable…

Astrophysics · Physics 2009-11-13 W. Lyra , A. Johansen , H. Klahr , N. Piskunov

Trojan asteroids are minor planets that share the orbit of a planet about the Sun and librate around the L4 or L5 Lagrangian points of stability. They are important because they carry information on early Solar System formation, when…

Earth and Planetary Astrophysics · Physics 2012-12-04 M. Todd , D. M. Coward , M. G. Zadnik

Context: High-spatial resolution Atacama Large Millimeter/submillimeter Array (ALMA) data have revealed a plethora of substructures in protoplanetary disks. Some of those features are thought to trace the formation of embedded planets. One…

Trojan asteroids are minor planets that share the orbit of a planet about the Sun and librate around the L4 or L5 Lagrangian points of stability. They are important solar-system fossils because they carry information on early Solar System…

Earth and Planetary Astrophysics · Physics 2012-04-27 M. Todd , P. Tanga , D. M. Coward , M. G. Zadnik

In a previous paper we simulated the orbital evolution of dust particles from the Jupiter Trojan asteroids ejected by the impacts of interplanetary particles, and evaluated their overall configuration in the form of dust arcs. Here we…

Earth and Planetary Astrophysics · Physics 2018-06-20 Xiaodong Liu , Jürgen Schmidt

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),…

Earth and Planetary Astrophysics · Physics 2011-10-11 P. S. Lykawka , J. Horner

The origin of the Jupiter Trojan asteroids has long been a mystery. Dynamically, the population, which is considerably smaller than the main asteroid belt, librates around Jupiter's stable L4 and L5 Lagrange points, 60 deg ahead and behind…

Earth and Planetary Astrophysics · Physics 2023-12-06 William F. Bottke , Raphael Marschall , David Nesvorný , David Vokrouhlický

Trojan asteroids are minor planets that share the orbit of a planet about the Sun and librate around the L4 or L5 Lagrangian points of stability. Although only three Mars Trojans have been discovered, models suggest that at least ten times…

Earth and Planetary Astrophysics · Physics 2012-07-10 M. Todd , P. Tanga , D. M. Coward , M. G. Zadnik

Transition disks have dust-depleted inner regions and may represent an intermediate step of an on-going disk dispersal process, where planet formation is probably in progress. Recent millimetre observations of transition disks reveal…

Earth and Planetary Astrophysics · Physics 2014-11-19 P. Pinilla , M. de Juan Ovelar , S. Ataiee , M. Benisty , T. Birnstiel , E. F. van Dishoeck , M. Min

The Trojan asteroids provide a unique perspective on the history of Solar System. As a large population of small bodies, they record important gravitational interactions and dynamical evolution of the Solar System. In the past decade,…

Earth and Planetary Astrophysics · Physics 2016-08-31 Joshua P. Emery , Francesco Marzari , Alessandro Morbidelli , Linda M. French , Tommy Grav

Due to their strong resonances with their host planet, Trojan asteroids can remain in stable orbits for billions of years. As a result, they are powerful probes for constraining the dynamical and chemical history of the solar system.…

Earth and Planetary Astrophysics · Physics 2022-04-22 Kevin J. Napier , Larissa Markwardt , Fred C. Adams , David W. Gerdes , Hsing Wen Lin

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,…

Earth and Planetary Astrophysics · Physics 2015-06-15 David Nesvorny , David Vokrouhlicky , Alessandro Morbidelli

Jupiter Trojan asteroids are located around L4 and L5 Lagrangian points on relatively stable orbits, in 1:1 MMR with Jupiter. However, not all of them lie in orbits that remain stable over the age of the Solar System. Unstable zones allow…

Earth and Planetary Astrophysics · Physics 2018-11-02 Romina P. Di Sisto , Ximena S. Ramos , Tabaré Gallardo

We investigate the stability regions of hypothetical terrestrial planets around the Lagrangian equilibrium points L4 and L5 in some specific extrasolar planetary systems. The problem of their stability can be treated in the framework of the…

Astrophysics · Physics 2009-11-10 R. Dvorak , E. Pilat-Lohinger , R. Schwarz , F. Freistetter

Planet formation is thought to begin with the growth of dust particles in protoplanetary disks from micrometer to millimeter and centimeter sizes. Dust growth is hindered by a number of growth barriers, according to dust evolution theory,…

Earth and Planetary Astrophysics · Physics 2019-02-04 Nienke van der Marel

Trojans are small bodies in planetary Lagrangian points. In our solar system, Jupiter has the largest number of such companions. Their existence is assumed for exoplanetary systems as well, but none has been found so far. We present an…

Earth and Planetary Astrophysics · Physics 2015-09-23 Michael Hippke , Daniel Angerhausen

The paper is devoted to investigate the capture of asteroids by Venus, Earth and Mars into the 1:1 mean motion resonance especially into Trojan orbits. Current theoretical studies predict that Trojan asteroids are a frequent by-product of…

Earth and Planetary Astrophysics · Physics 2016-11-23 Richard Schwarz , Rudolf Dvorak

The long-standing co-orbital asteroids have been thought to be the possible source of zodiacal dust ring around the orbit of Venus, but inconsistent conclusions on the orbital stability thus existence of Venus Trojans are found in…

Earth and Planetary Astrophysics · Physics 2022-10-19 Yang-Bo Xu , Lei Zhou , Christoph Lhotka , Li-Yong Zhou , Wing-Huen Ip
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