The effect of Jupiter on the CAI storage problem

Abstract

By studying the distribution of calcium-aluminium-rich inclusions (CAIs) that are embedded within meteorites, we can learn about the dynamical history of the protoplanetary disk from which our Solar System formed. A long-standing problem concerning CAIs is the CAI storage problem. CAIs are thought to have formed at high temperatures near the Sun, but they are primarily found in carbonaceous chondrites, which formed much further out, beyond the orbit of Jupiter. Additionally, radial drift of CAI particles should have removed them from the solar protoplanetary disk several million years before the parent bodies of meteorites in which they are encountered would have accreted. We revisit a previously suggested solution to the CAI storage problem by Desch, Kalyaan, and Alexander which proposed that CAIs were mixed radially outward through the disk and subsequently got trapped in a pressure maximum created by Jupiter's growing core opening a planet gap. Our aim is to investigate whether their solution still works when we take into account the infall phase during which the disk builds up from the collapse of a molecular cloud core. We build a 1D numerical code in Python using the DISKLAB package to simulate the evolution of the solar protoplanetary disk, starting with a collapsing molecular cloud. We find that outward transport of CAIs during the infall phase is very efficient, possibly mixing them all the way into the far outer disk. Subsequent inward radial drift collects CAIs in the pressure maximum beyond Jupiter's orbit while draining the inner disk, roughly reproducing parts of the result by Desch et al. By introducing CAI formation so early, abundances out to 100 AU remain significant, possibly not consistent with some meteoritic data. It is possible to create a disk that does not expand as far out and also does not push CAIs as far out by using a very slowly rotating cloud.

References in corpus (6)

• Gas- and dust evolution in protoplanetary disks
• Dust filtration at gap edges: Implications for the spectral energy distributions of discs with embedded planets
• Contemporary formation of early solar system planetesimals at two distinct radial locations
• Protoplanetary disc `isochrones' and the evolution of discs in the $\dot{M}-M_{\mathrm{d}}$ plane
• The role of magnetic fields in the formation of protostellar discs
• Crystalline silicates as a probe of disk formation history

Cited by in corpus (6)

• Formation and evolution of a protoplanetary disk: combining observations, simulations and cosmochemical constraints
• Thermal processing of primordial pebbles in evolving protoplanetary disks
• Mixing is easy: New insights for cosmochemical evolution from pre-stellar core collapse
• CAI formation in the early Solar System
• Infall and Disk Processes - the Message from Meteorites
• A quest for sulfur-bearing refractory species. Identification of CaS in the interstellar medium