Planet-forming material in a protoplanetary disc: the interplay between chemical evolution and pebble drift

Abstract

The composition of gas and solids in protoplanetary discs sets the composition of planets that form out of them. Recent chemical models have shown that the composition of gas and dust in discs evolves on Myr time-scales, with volatile species disappearing from the gas phase. However, discs evolve due to gas accretion and radial drift of dust on time-scales similar to these chemical time-scales. Here we present the first model coupling the chemical evolution in the disc mid-planes with the evolution of discs due to accretion and radial drift of dust. Our models show that transport will always overcome the depletion of CO${}_2$ from the gas phase, and can also overcome the depletion of CO and CH${}_4$ unless both transport is slow (viscous $\alpha \lesssim 10^{-3}$) and the ionization rate is high ($\zeta \approx 10^{-17}$). Including radial drift further enhances the abundances of volatile species because they are carried in on the surface of grains before evaporating left at their ice lines. Due to large differences in the abundances within 10 au for models with and without efficient radial drift, we argue that composition can be used to constrain models of planet formation via pebble accretion.

14 pages, 9 figures. Accepted for publication in MNRAS

References in corpus (27)

• Particle Stirring in Turbulent Gas Disks: Including Orbital Oscillations
• The imprint of exoplanet formation history on observable present-day spectra of hot Jupiters
• Global simulations of protoplanetary disks with ohmic resistivity and ambipolar diffusion
• A Three-Dimensional View of Turbulence: Constraints on Turbulent Motions in the HD 163296 Protoplanetary Disk using DCO${}^{+}$
• Towards Chemical Constraints on Hot Jupiter Migration
• Chemical enrichment of giant planets and discs due to pebble drift
• Lupus disks with faint CO isotopologues: low gas/dust or large carbon depletion?
• Hydrocarbon emission rings in protoplanetary disks induced by dust evolution
• Setting the volatile composition of (exo)planet-building material. Does chemical evolution in disk midplanes matter?
• Formation of planetary systems by pebble accretion and migration: Growth of gas giants
• Mass inventory of the giant-planet formation zone in a solar nebula analog
• Sensitivity analysis of grain surface chemistry to binding energies of ice species
• The Mass Budget of Planet Forming Discs: Isolating the Epoch of Planetesimal Formation
• Composition of Early Planetary Atmospheres I: Connecting Disk Astrochemistry to the Formation of Planetary Atmospheres
• Protoplanetary disc `isochrones' and the evolution of discs in the $\dot{M}-M_{\mathrm{d}}$ plane
• Constraints from Dust Mass and Mass Accretion Rate Measurements on Angular Momentum Transport in Protoplanetary Disks
• Protoplanetary Disks as (Possibly) Viscous Disks
• The Role of Ice Compositions for Snowlines and the C/N/O Ratios in Active Disks
• The spatial distribution of carbon dust in the early solar nebula and the carbon content of planetesimals
• The chemistry of protoplanetary fragments formed via gravitational instabilities
• Effects of accretion flow on the chemical structure in the inner regions of protoplanetary disks
• New Parallaxes and a Convergence Analysis for the TW Hya Association
• The Effects of Initial Abundances on Nitrogen in Protoplanetary Disks
• A photo-evaporative gap in the closest planet forming disc
• Complex organic molecules along the accretion flow in isolated and externally irradiated protoplanetary disks
• A pebbles accretion model with chemistry and implications for the solar system
• The nitrogen carrier in protoplanetary disks

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• Connecting planet formation and astrochemistry: A main sequence for C/O in hot-exoplanetary atmospheres
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• Close-in ice lines and the super-stellar C/O ratio in discs around very low-mass stars
• The diverse chemistry of protoplanetary disks as revealed by JWST
• The composition of hot Jupiter atmospheres assembled within chemically evolved protoplanetary discs
• Tracing snowlines and C/O ratio in a planet-hosting disk: ALMA molecular line observations towards the HD169142 disk
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• How drifting and evaporating pebbles shape giant planets III: The formation of WASP-77A b and $\tau$ Boötis b
• Chemical Feedbacks of Pebble Growth: Impacts on CO depletion and C/O ratios
• Exploring the link between star and planet formation with Ariel
• Monitoring the young planet host V1298 Tau with SPIRou: planetary system and evolving large-scale magnetic field
• Retrieval of the dayside atmosphere of WASP-43b with CRIRES+
• Composition of giant planets: the roles of pebbles and planetesimals
• Possible Atmospheric Diversity of Low Mass Exoplanets, some Central Aspects
• CO2-rich protoplanetary discs as a probe of dust radial drift & trapping
• Warm millimetre dust in protoplanetary discs near massive stars
• Planet formation throughout the Milky Way: Planet populations in the context of Galactic chemical evolution
• The SVS13-A Class I chemical complexity as revealed by S-bearing species. SOLIS XIII
• Chemical footprints of giant planet formation. Role of planet accretion in shaping the C/O ratio of protoplanetary disks
• Gravitoviscous protoplanetary disks with a dust component. V. The dynamic model for freeze-out and sublimation of volatiles
• The impact of pre-main sequence stellar evolution on midplane snowline locations and C/O in planet forming discs
• The GAPS program at TNG XLVII: The unusual formation history of V1298 Tau
• The origin of the high metallicity of close-in giant exoplanets II The nature of the sweet spot for accretion
• The Molecular Composition of Shadowed Protosolar Disk Midplanes beyond the Water Snowline
• High-resolution ALMA observations of compact discs in the wide-binary system Sz 65 and Sz 66
• Locked In Ice: how Pebble Drift and Volatile Entrapment can Significantly Impact Carbon and Oxygen Ratios in Evolving Protoplanetary Discs
• Tracing the formation and migration history: molecular signatures in the atmosphere of misaligned hot Jupiter WASP-94Ab using JWST NIRSpec/G395H
• The compositions of the HR 8799 planets reflect accretion of both solids and metal-enriched gas
• Ariel stellar characterisation II. Chemical abundances of carbon, nitrogen, and oxygen for 181 planet-host FGK dwarf stars
• An inherited complex organic molecule reservoir in a warm planet-hosting disk
• Chemical evolution in planet-forming regions with growing grains
• TOI-837 b: characterisation, formation and evolutionary history of an infant warm Saturn-mass planet
• Planet formation in chemically diverse and evolving discs -- I. Composition of planetary building blocks
• The GAPS programme at TNG LXIV: An inner eccentric sub-Neptune and an outer sub-Neptune-mass candidate around BD+00 444 (TOI-2443)
• Modelling thermochemical processes in protoplanetary disks I: numerical methods
• Multi-frequency analysis of the ALMA and VLA high resolution continuum observations of the substructured disc around CI Tau. Preference for sub-mm-sized low-porosity amorphous carbon grains
• How disc initial conditions sculpt the atmospheric composition of giant planets
• C/O ratios in self-gravitating protoplanetary discs with dust evolution
• How leaky? A large parameter study of leaky dust traps to quantify the transport of pebbles and ice in protoplanetary discs
• Icy Volatile Enhancements in Evolving Protoplanetary Disks
• Protoplanetary Disk Chemistry