Tracing pebble drift and trapping using radial carbon depletion profiles in protoplanetary disks

Abstract

The composition of planets may be largely determined by the chemical processing and accretion of icy pebbles in protoplanetary disks. Recent observations of protoplanetary disks hint at wide-spread depletion of gaseous carbon. The missing volatile carbon is likely frozen in CO and/or CO${}_2$ ice on grains and locked into the disk through pebble trapping in pressure bumps or planetesimals. We present the results of the first successful ACA (Atacama Compact Array) [C I] $J$ = 1-0 mini-survey of seven protoplanetary disks. Using tailored azimuthally symmetric DALI (Dust And LInes) thermo-chemical disk models, supported by the [C I] $J$ = 1-0 and resolved CO isotopologue data, we determine the system-averaged elemental volatile carbon abundance in the outer disk of three sources. Six out of seven sources are detected in [C I] $J$ = 1-0 with ACA, four of which show a distinct disk component. Based on the modeling we find severe cold gaseous carbon depletion in the outer disk of DL Tau and moderate depletion in the outer disks of DR Tau and DO Tau. Combining the outer and inner disk carbon abundances, we demonstrate definitive evidence for radial drift in the disk of DL Tau, where the existence of multiple dust rings points to either short lived or leaky dust traps. We find dust locking in the compact and smooth disks of DO Tau and DR Tau, hinting at unresolved dust substructure. Comparing our results with stars of different ages and luminosities, we identify an observational evolutionary trend in gaseous carbon depletion that is consistent with dynamical models of CO depletion processes. Transport efficiency of solids in protoplanetary disks can significantly differ from what we expect based on the current resolved substructure in the continuum observations. This has important implications for our understanding of the impact of radial drift and pebble accretion on planetary compositions.

arXiv comment23 pages, 19 figures, accepted to A&A

References in corpus (84)

• The chemical composition of the Sun
• Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
• An atomic and molecular database for analysis of submillimetre line observations
• The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
• Passive irradiated circumstellar disks with an inner hole
• The Mass Dependence Between Protoplanetary Disks and their Stellar Hosts
• ALMA Survey of Lupus Protoplanetary Disks I: Dust and Gas Masses
• Ringed Substructure and a Gap at 1 AU in the Nearest Protoplanetary Disk
• Gaps and Rings in an ALMA Survey of Disks in the Taurus Star-forming Region
• Radial Flow of Dust Particles in Accretion Disks
• Effects of Dust Growth and Settling in T Tauri Disks
• An Old Disk That Can Still Form a Planetary System
• ALMA Survey of Lupus Protoplanetary Disks II: Gas Disk Radii
• The Definitive Abundance of Interstellar Oxygen
• Exoplanetary Atmospheres: Key Insights, Challenges and Prospects
• Detection of the Water Reservoir in a Forming Planetary System
• A Parametric Modeling Approach to Measuring the Gas Masses of Circumstellar Disks
• The warm gas atmosphere of the HD 100546 disk seen by Herschel (Evidence of a gas-rich, carbon-poor atmosphere?)
• Solar System Abundances of the Elements
• Compact Disks in a High Resolution ALMA Survey of Dust Structures in the Taurus Molecular Cloud
• Survival of molecular gas in cavities of transition disks (I. CO)
• On the Interferometric Sizes of Young Stellar Objects
• The Radial Distribution of H2 and CO in TW Hya as Revealed by Resolved ALMA Observations of CO Isotopologues
• Tracing the Ingredients for a Habitable Earth from Interstellar Space through Planet Formation
• Volatile carbon locking and release in protoplanetary disks. A study of TW Hya and HD 100546
• Lupus disks with faint CO isotopologues: low gas/dust or large carbon depletion?
• Protoplanetary disk masses from CO isotopologues line emission
• A Significantly Low CO Abundance Toward the TW Hya Protoplanetary Disk: A Path to Active Carbon Chemistry?
• A multi-wavelength analysis for interferometric (sub-)mm observations of protoplanetary disks: radial constraints on the dust properties and the disk structure
• Hydrocarbon emission rings in protoplanetary disks induced by dust evolution
• Mass measurements in protoplanetary disks from hydrogen deuteride
• Measuring turbulent motion in planet-forming disks with ALMA: A detection around DM Tau and non-detections around MWC 480 and V4046 Sgr
• X-Shooter study of accretion in Chamaeleon I: II. A steeper increase of accretion with stellar mass for very low mass stars?
• Submillimeter lines from circumstellar disks around pre-main sequence stars
• Observational $5-20\mu$m Interstellar Extinction Curves Toward Star-Forming Regions Derived from Spitzer IRS Spectra
• Structure of Herbig AeBe disks at the milliarcsecond scale A statistical survey in the H band using PIONIER-VLTI
• Different dust and gas radial extents in protoplanetary disks: consistent models of grain growth and CO emission
• The origin of hydrogen line emission for five Herbig Ae/Be stars spatially resolved by VLTI/AMBER spectro-interferometry
• Determining protoplanetary disk gas masses from CO isotopologues line observations
• Gas structure inside dust cavities of transition disks: Oph IRS 48 observed by ALMA
• The Disk Substructures at High Angular Resolution Project (DSHARP): IV. Characterizing substructures and interactions in disks around multiple star systems
• CO Depletion in Protoplanetary Disks: A Unified Picture Combining Physical Sequestration and Chemical Processing
• X-Shooter study of accretion in Chamaeleon I
• Rotationally-supported disks around Class I sources in Taurus: disk formation constraints
• CO destruction in protoplanetary disk midplanes: inside versus outside the CO snow surface
• An ALMA Survey of CO isotopologue emission from Protoplanetary Disks in Chamaeleon I
• The evolution of dust-disk sizes from a homogeneous analysis of 1-10 Myr-old stars
• Fingerprints of giant planets in the photospheres of Herbig stars
• A Far-ultraviolet Atlas of Low-resolution Hubble Space Telescope Spectra of T Tauri Stars
• Unlocking CO Depletion in Protoplanetary Disks I. The Warm Molecular Layer
• Gas vs dust sizes of protoplanetary disks: effects of dust evolution
• Disks around CQ Tau and MWC 758: dense PDR or gas dispersal?
• A sensitive survey for 13CO, CN, H2CO and SO in the disks of T Tauri and Herbig Ae stars
• Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks
• A survey of C2H, HCN, and C18O in protoplanetary disks
• Bright C2H emission in protoplanetary disks in Lupus: high volatile C/O>1 ratios
• Sensitive limits on the abundance of cold water vapor in the DM Tau protoplanetary disk
• Exploring the Origins of Carbon in Terrestrial Worlds
• Nitrogen isotope fractionation in protoplanetary disks
• Survey of cold water lines in protoplanetary disks: indications of systematic volatile depletion
• Faint disks around classical T Tauri stars: small but dense enough to form planets?
• Inferring giant planets from ALMA millimeter continuum and line observations in (transition) disks
• Rapid Evolution of Volatile CO from the Protostellar Disk Stage to the Protoplanetary Disk Stage
• The VLTI / PIONIER near-infrared interferometric survey of southern T Tauri stars. I. First results
• Resolving Protoplanetary Disks at Millimeter Wavelengths by CARMA
• The TW Hya Rosetta Stone Project III: Resolving the Gaseous Thermal Profile of the Disk
• Mean gas opacity for circumstellar environments and equilibrium temperature degeneracy
• Constraining the Sub-AU-Scale Distribution of Hydrogen and Carbon Monoxide Gas around Young Stars with the Keck Interferometer
• An evolutionary study of volatile chemistry in protoplanetary disks
• Rings and gaps in protoplanetary disks: planets or snowlines?
• Characterizing the stellar photospheres and near-infrared excesses in accreting T Tauri systems
• 13C17O suggests gravitational instability in the HL Tau disc
• Excess C/H in Protoplanetary Disk Gas from Icy Pebble Drift across the CO Snowline
• Carbon depletion observed inside T Tauri inner rims: Formation of icy, kilometer size planetesimals by 1 Myr
• Dual-Wavelength ALMA Observations of Dust Rings in Protoplanetary Disks
• Destruction of refractory carbon grains drives the final stage of proto-planetary disk chemistry
• Chemical Evolution in a Protoplanetary Disk within Planet Carved Gaps and Dust Rings
• The dry and carbon poor inner disk of TW Hya: evidence for a massive icy dust trap
• A ringed pole-on outflow from DO Tauri revealed by ALMA
• Measuring the atomic composition of planetary building blocks
• An HST Imaging Survey of Low-Mass Stars in the Chamaeleon I Star Forming region
• Probing the protoplanetary disk gas surface density distribution with ${}^{13}$CO emission
• CO isotopolog line fluxes of viscously evolving disks: cold CO conversion insufficient to explain observed low fluxes
• ALMA observation of the protoplanetary disk around WW Cha: faint double-peaked ring and asymmetric structure

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