Planets fashioned in 37 optimum 4-P techniques. Inexperienced-, magenta-, cyan- and red-filled symbols point out the planet analogs of Mercury, Venus, Earth, and Mars, respectively. Error bars point out variation in heliocentric distance primarily based on the item’s perihelion and aphelion. Giant open triangles symbolize the terrestrial planets of the photo voltaic system. — astro-ph.EP
The Jupiter-Saturn chaotic excitation (JSCE) situation proposes that the protoplanetary disk was dynamically excited and depleted past ~1-1.5 au in just a few Myr, providing a brand new and believable clarification for a number of noticed properties of the internal photo voltaic system.
Right here, we expanded our earlier work by conducting a complete evaluation of 37 optimum terrestrial planet techniques obtained within the context of the JSCE situation. Every optimum system harbored precisely 4 terrestrial planets analogs to Mercury, Venus, Earth, and Mars. We additional investigated water supply, feeding zones, and accretion historical past for the planet analogs, which allowed us to raised constrain the water distribution within the disk.
The principle findings of this work are as follows: 1) the formation of 4 terrestrial planets with orbits and much just like these noticed in our photo voltaic system in most of our pattern, as evidenced by the dynamically colder and warmer orbits of Venus-Earth and Mercury-Mars analogs, and the excessive success charges of comparable mutual orbital separations (~40-85%) and mass ratios of the planets (~70-90%) among the many 37 techniques; and
2) water was delivered to all terrestrial planets throughout their formation by way of the accretion of water-bearing disk objects from past ~1-1.5 au. The achievement of Earth’s estimated bulk water content material required the disk to comprise ample water mass distributed inside these objects initially. This requirement implies that Mercury, Venus, and Mars acquired water just like the quantity on Earth throughout their formation.
A number of of our planet analogs additionally matched extra constraints, such because the timing of Moon formation by a large influence, Earth’s late accretion mass and composition, and Mars’s formation timescale.
Patryk Sofia Lykawka, Takashi Ito
Feedback: Manuscript accepted for publication in Icarus (pre-proof test model). The article DOI isn’t but accessible
Topics: Earth and Planetary Astrophysics (astro-ph.EP)
Cite as: arXiv:2404.13826 [astro-ph.EP] (or arXiv:2404.13826v1 [astro-ph.EP] for this model)
Submission historical past
From: Patryk Sofia Lykawka
[v1] Mon, 22 Apr 2024 01:58:22 UTC (1,488 KB)
https://arxiv.org/abs/2404.13826
Astrobiology,
