Can Uranus and Neptune form concurrently via pebble, gas and planetesimal accretion?
Linn Eriksson
Stony Brook University

The origin of Uranus and Neptune has long been challenging to explain, due to the large orbital distances from the Sun. After a planetary embryo has been formed, the main accretion processes are likely pebble, gas and planetesimal accretion. Previous studies of Uranus and Neptune formation typically don't consider all three processes; and furthermore, do not investigate how the formation of the outer planet impacts the inner planet. In a recently submitted paper we study the concurrent formation of Uranus and Neptune via both pebble, gas and planetesimal accretion. We use a dust-evolution model to predict the size and mass flux of pebbles, and derive our own fit for gas accretion. I will present the results from this study.

Date:	Jeudi, le 21 septembre 2023
Heure:	11:30
Lieu:	Pour tous
	Pavillon MIL A-3561