SIMBAD references

2015ApJ...800L..22I - Astrophys. J., 800, L22 (2015/February-3)

Gas giant planets as dynamical barriers to inward-migrating super-earths.

IZIDORO A., RAYMOND S.N., MORBIDELLI A., HERSANT F. and PIERENS A.

Abstract (from CDS):

Planets of 1-4 times Earth's size on orbits shorter than 100 days exist around 30-50% of all Sun-like stars. In fact, the Solar System is particularly outstanding in its lack of "hot super-Earths" (or "mini-Neptunes"). These planets–or their building blocks–may have formed on wider orbits and migrated inward due to interactions with the gaseous protoplanetary disk. Here, we use a suite of dynamical simulations to show that gas giant planets act as barriers to the inward migration of super-Earths initially placed on more distant orbits. Jupiter's early formation may have prevented Uranus and Neptune (and perhaps Saturn's core) from becoming hot super-Earths. Our model predicts that the populations of hot super-Earth systems and Jupiter-like planets should be anti-correlated: gas giants (especially if they form early) should be rare in systems with many hot super-Earths. Testing this prediction will constitute a crucial assessment of the validity of the migration hypothesis for the origin of close-in super-Earths.

Abstract Copyright:

Journal keyword(s): planets and satellites: formation - planet-disk interactions

Simbad objects: 7

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2019.09.15-16:52:13

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