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Anders Johansen. Profile picture.

Anders Johansen

Professor

Anders Johansen. Profile picture.

Natural separation of two primordial planetary reservoirs in an expanding solar protoplanetary disk

Author

  • Beibei Liu
  • Anders Johansen
  • Michiel Lambrechts
  • Martin Bizzarro
  • Troels Haugbølle

Summary, in English

Meteorites display an isotopic composition dichotomy between noncarbonaceous (NC) and carbonaceous (CC) groups, indicating that planetesimal formation in the solar protoplanetary disk occurred in two distinct reservoirs. The prevailing view is that a rapidly formed Jupiter acted as a barrier between these reservoirs. We show a fundamental inconsistency in this model: If Jupiter is an efficient blocker of drifting pebbles, then the interior NC reservoir is depleted by radial drift within a few hundred thousand years. If Jupiter lets material pass it, then the two reservoirs will be mixed. Instead, we demonstrate that the arrival of the CC pebbles in the inner disk is delayed for several million years by the viscous expansion of the protoplanetary disk. Our results support the hypothesis that Jupiter formed in the outer disk (>10 astronomical units) and allowed a considerable amount of CC material to pass it and become accreted by the terrestrial planets.

Department/s

  • Lund Observatory
  • eSSENCE: The e-Science Collaboration

Publishing year

2022-04

Language

English

Publication/Series

Science Advances

Volume

8

Issue

16

Document type

Journal article

Publisher

American Association for the Advancement of Science (AAAS)

Topic

  • Physical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 2375-2548