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pro vyhledávání: '"Raymond, Sean N."'
Autor:
Raymond, Sean N.
Understanding the origin and long-term evolution of the Solar System is a fundamental goal of planetary science and astrophysics. This chapter describes our current understanding of the key processes that shaped our planetary system, informed by empi
Externí odkaz:
http://arxiv.org/abs/2404.14982
The dynamical architecture and compositional diversity of the asteroid belt strongly constrain planet formation models. Recent Solar System formation models have shown that the asteroid belt may have been born empty and later filled with objects from
Externí odkaz:
http://arxiv.org/abs/2404.10831
The asteroid Athor, residing today in the inner main asteroid belt, has been recently associated as the source of EL enstatite meteorites to Earth. It has been argued that Athor formed in the terrestrial region -- as indicated by similarity in isotop
Externí odkaz:
http://arxiv.org/abs/2404.10828
Publikováno v:
Icarus, Volume 414, 2024, 116032
Recent models of solar system formation suggest that a dynamical instability among the giant planets happened within the first 100 Myr after disk dispersal, perhaps before the Moon-forming impact. As a direct consequence, a bombardment of volatile-ri
Externí odkaz:
http://arxiv.org/abs/2403.08545
Autor:
Kaib, Nathan A., Raymond, Sean N.
Reconstructions of the paleoclimate indicate that ancient climatic fluctuations on Earth are often correlated with variations in its orbital elements. However, the chaos inherent in the solar system's orbital evolution prevents numerical simulations
Externí odkaz:
http://arxiv.org/abs/2402.08734
Autor:
Pierens, Arnaud, Raymond, Sean N.
Observations of protoplanetary discs have revealed dust rings which are likely due to the presence of pressure bumps in the disc. Because these structures tend to trap drifting pebbles, it has been proposed that pressure bumps may play an important r
Externí odkaz:
http://arxiv.org/abs/2402.05760
Given the inexorable increase in the Sun's luminosity, Earth will exit the habitable zone in ~1 Gyr. There is a negligible chance that Earth's orbit will change during that time through internal Solar System dynamics. However, there is a ~1% chance p
Externí odkaz:
http://arxiv.org/abs/2311.12171
A race against the clock: Constraining the timing of cometary bombardment relative to Earth's growth
Autor:
Joiret, Sarah, Raymond, Sean N., Avice, Guillaume, Clement, Matthew S., Deienno, Rogerio, Nesvorný, David
Publikováno v:
Icarus, 406, 115754 (2023)
Comets are considered a potential source of inner solar system volatiles, but the timing of this delivery relative to that of Earth's accretion is still poorly understood. Measurements of xenon isotopes in comet 67P/Churyumov-Gerasimenko revealed tha
Externí odkaz:
http://arxiv.org/abs/2309.03954
Dynamical instabilities among giant planets are thought to be nearly ubiquitous, and culminate in the ejection of one or more planets into interstellar space. Here we perform N-body simulations of dynamical instabilities while accounting for torques
Externí odkaz:
http://arxiv.org/abs/2306.11109
Autor:
Raymond, Sean N., Veras, Dimitri, Clement, Matthew S., Izidoro, Andre, Kipping, David, Meadows, Victoria
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 521, Issue 2, pp.2002-2011
Co-orbital systems contain two or more bodies sharing the same orbit around a planet or star. The best-known flavors of co-orbital systems are tadpoles (in which two bodies' angular separations oscillate about the L4/L5 Lagrange points $60^\circ$ apa
Externí odkaz:
http://arxiv.org/abs/2304.09209