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Related papers: A Martian Origin for the Mars Trojan Asteroids

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The detection of olivine on Vesta is interesting because it may provide critical insights into planetary differentiation early in our Solar System's history. Ground-based and Hubble Space Telescope (HST) observations of asteroid (4) Vesta…

Earth and Planetary Astrophysics · Physics 2015-02-12 Lucille Le Corre , Vishnu Reddy , Juan A. Sanchez , Tasha Dunn , Edward A. Cloutis , Matthew R. M. Izawa , Paul Mann , Andreas Nathues

Theoretical studies predict that Trojans are likely a frequent byproduct of planet formation and evolution. We present a novel method of detecting Trojan companions to transiting extrasolar planets which involves comparing the time of…

Astrophysics · Physics 2009-11-11 Eric B. Ford , B. Scott Gaudi

Araneiforms are radially converging systems of branching troughs exhibiting fractal properties. They are found exclusively in the Southern polar regions of Mars and believed to be result of multiple repetitions of cold CO2 gas jets…

Earth and Planetary Astrophysics · Physics 2019-03-29 Ganna Portyankina , Candice J. Hansen , Klaus-Michael Aye

Recent works have shown that Martian moons Phobos and Deimos may have accreted within a giant impact-generated disk whose composition is about an equal mixture of Martian material and impactor material. Just after the giant impact, the…

Earth and Planetary Astrophysics · Physics 2018-07-04 Ryuki Hyodo , Hidenori Genda , Sébastien Charnoz , Francesco C. Pignatale , Pascal Rosenblatt

The Nysa-Polana complex is a group of low-inclination asteroid families in the inner main belt, bounded in semimajor axis by the Mars-crossing region and the Jupiter 3:1 mean-motion resonance. This group is important as the most likely…

Earth and Planetary Astrophysics · Physics 2015-06-23 Melissa Dykhuis , Richard Greenberg

According to the giant impact theory, the Moon formed through accreting the debris disk produced by a collision between Theia and the proto-Earth, and the predicted lunar orbital inclination relative to the Earth's equatorial plane is about…

Earth and Planetary Astrophysics · Physics 2026-04-01 Wenshuai Liu

The Jupiter Trojans are a significant population of minor bodies in the middle Solar System that have garnered substantial interest in recent years. Several spectroscopic studies of these objects have revealed notable bimodalities with…

Earth and Planetary Astrophysics · Physics 2014-11-12 Ian Wong , Michael E. Brown , Joshua P. Emery

Primitive asteroids with low albedos and red slopes in the visible and near infrared (VNIR) are found in both the Main Belt and the Jupiter Trojan clouds. In order to determine whether the VNIR spectral similarities of primitive Main Belt…

Earth and Planetary Astrophysics · Physics 2024-05-08 Oriel A. Humes , Audrey C. Martin , Cristina A. Thomas , Joshua P. Emery

We analyze thermal emission spectra using the 2001 Mars Odyssey Thermal Emission Imaging System (THEMIS) and the Mars Global Surveyor (MGS) Thermal Emission Spectrometer (TES) to characterize grain size and mineralogical composition of…

Earth and Planetary Astrophysics · Physics 2021-09-14 A. Emran , L. J. Marzen , D. T. King , V. F. Chevrier

Aims. We developed a six-part collisional evolution model of the main asteroid belt (MB) and used it to study the contribution of the different regions of the MB to the near-earth asteroids (NEAs). Methods. We built a statistical code…

Earth and Planetary Astrophysics · Physics 2020-07-01 P. S. Zain , G. C. de Elía , R. P. Di Sisto

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…

Earth and Planetary Astrophysics · Physics 2011-12-16 Patryk Sofia Lykawka , Jonathan Horner , Barrie W. Jones , Tadashi Mukai

We present a series of numerical integrations of observed and fictitious Jupiter Trojan asteroids, under the gravitational effects of the four outer planets, for time-spans comparable with the age of the Solar System. From these results we…

Earth and Planetary Astrophysics · Physics 2016-04-20 Romina P. Di Sisto , Ximena S. Ramos , Cristián Beaugé

The Karin cluster is a young asteroid family thought to have formed only $\simeq 5.75$~My ago. The young age can be demonstrated by numerically integrating the orbits of Karin cluster members backward in time and showing the convergence of…

Earth and Planetary Astrophysics · Physics 2016-06-08 Valerio Carruba , David Nesvorný , David Vokrouhlický

The Moon has suffered intense impact bombardment ending at 3.9 Gyr ago, and this bombardment probably affected all of the inner Solar System. Basin magnetization signatures and lunar crater size-distributions indicate that the last episode…

Earth and Planetary Astrophysics · Physics 2015-06-03 Matija Ćuk

Proton auroras are widely observed on the dayside of Mars, identified as a significant intensity enhancement in the hydrogen Lyman alpha (121.6 nm) emission between 110 - 150 km altitudes. Solar wind protons penetrating as energetic neutral…

Earth and Planetary Astrophysics · Physics 2024-06-25 Dattaraj B. Dhuri , Dimitra Atri , Ahmed AlHantoobi

In this work, we model the collisional evolution of the Jupiter Trojans and determined under which conditions the Eurybates-Queta system survives. We show that the collisional strength of the Jupiter Trojans and the age of the Eurybates…

Earth and Planetary Astrophysics · Physics 2022-10-17 Raphael Marschall , David Nesvorný , Rogerio Deienno , Ian Wong , Harold F. Levison , William F. Bottke

The abundance of highly siderophile elements (HSEs) inferred for Mars' mantle from martian meteorites implies a Late Veneer (LV) mass addition of ~0.8 wt% with broadly chondritic composition. Late accretion to Mars by a differentiated…

Earth and Planetary Astrophysics · Physics 2019-06-24 Jason Man Yin Woo , Hidenori Genda , Ramon Brasser , Stephen J. Mojzsis

The Eurybates family is a compact core inside the Menelaus clan, located in the L4 swarm of Jupiter Trojans. Fornasier et al. (2007) found that this family exhibits a peculiar abundance of spectrally flat objects, similar to Chiron-like…

Earth and Planetary Astrophysics · Physics 2015-05-18 F. De Luise , E. Dotto , S. Fornasier , M. A. Barucci , N. Pinilla-Alonso , D. Perna , F. Marzari

Our earlier laboratory measurements showed that low-velocity sand impacts release fine <5 {\mu}m dust from a Martian simulant soil. This dust will become airborne in the Martian atmosphere. Here, we extend this study by measuring…

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