Giant planet effects on terrestrial planet formation and system architecture. Issue 1 (8th February 2019)

• Record Type: Journal Article
• Authors: Childs, Anna C; Quintana, Elisa; Barclay, Thomas; Steffen, Jason H
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 485:Issue 1(2019)
• Page Start: 541
• Page End: 549
• Publication Date: 2019-02-08
• Subjects: giant planets -- simulations -- terrestrial planet formation; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/stz385
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: Using an updated collision model, we conduct a suite of high-resolution N -body integrations to probe the relationship between giant planet mass and terrestrial planet formation and system architecture. We vary the mass of the planets that reside at Jupiter's and Saturn's orbit and examine the effects on the interior terrestrial system. We find that massive giant planets are more likely to eject material from the outer edge of the terrestrial disc and produce terrestrial planets that are on smaller, more circular orbits. We do not find a strong correlation between exterior giant planet mass and the number of Earth analogues (analogous in mass and semimajor axis) produced in the system. These results allow us to make predictions on the nature of terrestrial planets orbiting distant Sun-like star systems that harbour giant planet companions on long orbits – systems that will be a priority for NASA's upcoming Wide-Field Infrared Survey Telescope (WFIRST) mission.