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Forming Planets via Pebble Accretion

Johansen, Anders LU and Lambrechts, Michiel LU (2017) In Annual Review of Earth and Planetary Sciences 45. p.359-387
Abstract

The detection and characterization of large populations of pebbles in protoplanetary disks have motivated the study of pebble accretion as a driver of planetary growth. This review covers all aspects of planet formation by pebble accretion, from dust growth over planetesimal formation to the accretion of protoplanets and fully grown planets with gaseous envelopes. Pebbles are accreted at a very high rate-orders of magnitude higher than planetesimal accretion-and the rate decreases only slowly with distance from the central star. This allows planetary cores to start their growth in much more distant positions than their final orbits. The giant planets orbiting our Sun and other stars, including systems of wide-orbit exoplanets, can... (More)

The detection and characterization of large populations of pebbles in protoplanetary disks have motivated the study of pebble accretion as a driver of planetary growth. This review covers all aspects of planet formation by pebble accretion, from dust growth over planetesimal formation to the accretion of protoplanets and fully grown planets with gaseous envelopes. Pebbles are accreted at a very high rate-orders of magnitude higher than planetesimal accretion-and the rate decreases only slowly with distance from the central star. This allows planetary cores to start their growth in much more distant positions than their final orbits. The giant planets orbiting our Sun and other stars, including systems of wide-orbit exoplanets, can therefore be formed in complete consistency with planetary migration. We demonstrate how growth tracks of planetary mass versus semimajor axis can be obtained for all the major classes of planets by integrating a relatively simple set of governing equations.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Formation of planets and satellites, Gaseous planets, Planet-disk interactions, Planetary systems, Protoplanetary disks
in
Annual Review of Earth and Planetary Sciences
volume
45
pages
29 pages
publisher
Annual Reviews Inc.
external identifiers
  • scopus:85029144952
  • wos:000411802000015
ISSN
0084-6597
DOI
10.1146/annurev-earth-063016-020226
language
English
LU publication?
yes
id
d39885d5-15e8-4013-a8a1-7ce787051b91
date added to LUP
2017-10-03 08:46:10
date last changed
2018-02-18 05:04:11
@article{d39885d5-15e8-4013-a8a1-7ce787051b91,
  abstract     = {<p>The detection and characterization of large populations of pebbles in protoplanetary disks have motivated the study of pebble accretion as a driver of planetary growth. This review covers all aspects of planet formation by pebble accretion, from dust growth over planetesimal formation to the accretion of protoplanets and fully grown planets with gaseous envelopes. Pebbles are accreted at a very high rate-orders of magnitude higher than planetesimal accretion-and the rate decreases only slowly with distance from the central star. This allows planetary cores to start their growth in much more distant positions than their final orbits. The giant planets orbiting our Sun and other stars, including systems of wide-orbit exoplanets, can therefore be formed in complete consistency with planetary migration. We demonstrate how growth tracks of planetary mass versus semimajor axis can be obtained for all the major classes of planets by integrating a relatively simple set of governing equations.</p>},
  author       = {Johansen, Anders and Lambrechts, Michiel},
  issn         = {0084-6597},
  keyword      = {Formation of planets and satellites,Gaseous planets,Planet-disk interactions,Planetary systems,Protoplanetary disks},
  language     = {eng},
  month        = {08},
  pages        = {359--387},
  publisher    = {Annual Reviews Inc.},
  series       = {Annual Review of Earth and Planetary Sciences},
  title        = {Forming Planets via Pebble Accretion},
  url          = {http://dx.doi.org/10.1146/annurev-earth-063016-020226},
  volume       = {45},
  year         = {2017},
}