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SUMMARY:The effect of N-body interactions in pebble accretion scenarios - 
 Gavin Coleman (Bern)
DTSTART:20171115T160000Z
DTEND:20171115T170000Z
UID:TALK87881@talks.cam.ac.uk
CONTACT:Ed Gillen
DESCRIPTION:The role of pebble accretion has becoming increasingly importa
 nt in the core accretion scenario over recent years. Traditionally\, core 
 accretion utilised large planetesimals as the main source of growth for pl
 anetary cores. The main problem with using large planetesimals was that th
 e growth timescales to form the cores of giant planets were typically long
 er than expected protoplanetary disc lifetimes. Growth timescales when usi
 ng pebbles however\, are much shorter\, due to the greater efficiency at w
 hich pebbles can be accreted. Recent works have utilised these shorter tim
 escales to examine the growth of giant planets\, ice giants\, and the terr
 estrial planets. In most of these works however\, only a single planet has
  been assumed to form in the disc.\n\nIn this talk I will present new mode
 ls of pebble accretion where multiple planetary embryos have been consider
 ed to form in a single disc. To do this\, we have coupled the N-body integ
 rator Mercury6 to the Bern population synthesis model\, including up-to-da
 te prescriptions for disc evolution\, planet migration\, accretion and int
 ernal structure. The effects of planet multiplicity on their accretion and
  migration rates will be discussed\, as well as the final planetary system
 s that emerge from the system.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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