Published September 1, 2020 | Version v1
Journal article

Can Chondrules Be Produced by the Interaction of Jupiter with the Protosolar Disk?

  • 1. Institut für Geochemie und Petrologie, Departement Erdwissenschaften, Clausiusstrasse 25, 8092, Zürich (Switzerland)
  • 2. Institute for Computational Science, University of Zürich, Winterthurerstrasse 190, 8057 Zürich (Switzerland)

Description

Chondrules are crystallized droplets of silicate melt formed by rapid heating to high temperatures (>1800 K) of solid precursors followed by hours or days of cooling. The time interval of chondrule formation is consistent with the formation timescale of Jupiter in the core-accretion model (1–4 Myr). Here we investigate if the shocks generated by a massive planet could generate flash heating episodes necessary to form chondrules using high-resolution 2D simulations with the multifluid code RoSSBi. We use different radiative cooling prescriptions, planet masses, orbits, and disk models. Temperatures reached during flash heating can be deduced from chondrule observations and are achieved in a Minimum Mass Solar Nebula (MMSN) for a massive protoplanet (>0.75 M ) but only in cases in which radiative cooling is low enough to lead to nearly adiabatic conditions. More realistic thermodynamics undershoot the temperatures required in shocks for chondrule formation. However, these temperatures are reached when considering more massive disks (e.g., five MMSN), but these conditions lead to fast planet migration and too low cooling rates compared to those deduced from chondrule textures. Thus, it seems unlikely that shocks from Jupiter can form chondrules in most cases. Independent of the nebular mass, the simulations demonstrate that a massive planet that forms a gap triggers vortices, which act as dust traps for chondrule precursors. These vortices also provide a high-pressure environment consistent with cosmochemical evidence from chondrules. They only lack the flash heating source for a potential chondrule formation environment.

Availability note (English)

Available from http://dx.doi.org/10.3847/1538-4357/abaef2

Additional details

Identifiers

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
901
Journal Issue
1
Journal Page Range
[13 p.]
ISSN
0004-637X
CODEN
ASJOAB

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
52071673
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; COSMIC DUST; FLASH HEATING; JUPITER PLANET; MASS; ORBITS; PROTOPLANETS; RADIATIVE COOLING; SILICATES; SOLAR NEBULA; THERMODYNAMICS
Descriptors DEC
COOLING; DUSTS; EVALUATION; HEATING; NEBULAE; OXYGEN COMPOUNDS; PLANETS; SILICON COMPOUNDS; SIMULATION