The Evolution Of The Inner Regions of Protoplanetary Disks

Abstract

We present a study of the evolution of the inner few astronomical units of protoplanetary disks around low-mass stars. We consider nearby stellar groups with ages spanning from 1 to 11 Myr, distributed into four age bins. Combining PANSTARSS photometry with spectral types, we derive the reddening consistently for each star, which we use (1) to measure the excess emission above the photosphere with a new indicator of IR excess and (2) to estimate the mass accretion rate ($\dot{M}$) from the equivalent width of the H$\alpha$ line. Using the observed decay of $\dot{M}$ as a constrain to fix the initial conditions and the viscosity parameter of viscous evolutionary models, we use approximate Bayesian modeling to infer the dust properties that produce the observed decrease of the IR excess with age, in the range between 4.5 and $24\mu$m. We calculate an extensive grid of irradiated disk models with a two-layered wall to emulate a curved dust inner edge and obtain the vertical structure consistent with the surface density predicted by viscous evolution. We find that the median dust depletion in the disk upper layers is $\epsilon \sim 3\times 10^{-3}$ at 1.5 Myr, consistent with previous studies, and it decreases to $\epsilon \sim 3\times 10^{-4}$ by 7.5 Myr. We include photoevaporation in a simple model of the disk evolution and find that a photoevaporative wind mass-loss rate of $\sim 1-3\times 10^{-9}{M}_{\odot }y{r}^{-1}$ agrees with the decrease of the disk fraction with age reasonably well. The models show the inward evolution of the H${}_2$O and CO snowlines.

arXiv commentAccepted for publication in the Astrophysical Journal

References in corpus (105)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
• Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars
• Protoplanetary Disks and Their Evolution
• The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
• The effects of snowlines on C/O in planetary atmospheres
• The Pan-STARRS1 Photometric System
• Circumstellar Dust Disks in Taurus-Auriga: The Submillimeter Perspective
• A simple model for the evolution of the dust population in protoplanetary disks
• Dust coagulation in protoplanetary disks: a rapid depletion of small grains
• Gas- and dust evolution in protoplanetary disks
• Accretion Disks around Young Objects. I. The Detailed Vertical Structure
• VOSA: Virtual Observatory SED Analyzer. An application to the Collinder 69 open cluster
• Ringed Substructure and a Gap at 1 AU in the Nearest Protoplanetary Disk
• A Revised Age for Upper Scorpius and The Star-Formation History Among the F-Type Members of the Scorpius-Centaurus OB Association
• Evidence for a developing gap in a 10 Myr old protoplanetary disk
• Accretion Disks Around Young Objects. III. Grain Growth
• Gaps and Rings in an ALMA Survey of Disks in the Taurus Star-forming Region
• Spitzer Space Telescope study of disks in the young $\sigma$ Orionis cluster
• Estimating distances from parallaxes
• Accretion Disks Around Young Objects. II. Tests of Well-Mixed Models with Ism Dust
• Two accreting protoplanets around the young star PDS 70
• Observations of IC348: The Disk Population at 2-3 Million Years
• The Spitzer Space Telescope Survey of the Orion A & B Molecular Clouds - Part I: A Census of Dusty Young Stellar Objects and a Study of their Mid-IR Variability
• The effect of dust settling on the appearance of protoplanetary disks
• The Disk Population of the Taurus Star-Forming Region
• Timescale of Mass Accretion in Pre-Main-Sequence Stars
• Effects of Dust Growth and Settling in T Tauri Disks
• Dust Filtration by Planet-Induced Gap Edges: Implications for Transitional Disks
• A Survey and Analysis of Spitzer Infrared Spectrograph Spectra of T Tauri Stars in Taurus
• X-Shooter spectroscopy of young stellar objects: IV -- Accretion in low-mass stars and sub-stellar objects in Lupus
• The Disk Substructures at High Angular Resolution Project (DSHARP): VII. The Planet-Disk Interactions Interpretation
• Evidence of fast pebble growth near condensation fronts in the HL Tau protoplanetary disk
• Imaging of the CO Snow Line in a Solar Nebula Analog
• The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. A Statistical Characterization of Class 0 and I Protostellar Disks
• The APOGEE-2 Survey of the Orion Star Forming Complex II: Six-dimensional structure
• Sintering-induced Dust Ring Formation in Protoplanetary Disks: Application to the HL Tau Disk
• Evidence for Mass-dependent Circumstellar Disk Evolution in the 5 Myr-old Upper Scorpius OB Association
• IRAC Observations of Taurus Pre-Main Sequence Stars
• The inner regions of protoplanetary disks
• On the Diversity of the Taurus Transitional Disks: UX Tau A & Lk Ca 15
• Towards Chemical Constraints on Hot Jupiter Migration
• Low-Mass Star Formation and the Initial Mass Function in the Rho Ophiuchi Cloud Core
• Planetesimal formation starts at the snow line
• Unveiling the Structure of Pre-Transitional Disks
• Transitional and Pre-Transitional disks: Gap Opening by Multiple Planets?
• The Truncated Disk of CoKu Tau/4
• Compact Disks in a High Resolution ALMA Survey of Dust Structures in the Taurus Molecular Cloud
• Dust size distributions in coagulation/fragmentation equilibrium: Numerical solutions and analytical fits
• A Spitzer view of protoplanetary disks in the gamma Velorum cluster
• Accretion Rates for T Tauri Stars Using Nearly Simultaneous Ultraviolet and Optical Spectra
• The Disk Population of the Upper Scorpius Association
• Dust dynamics during protoplanetary disc clearing
• The Shape of the Inner Rim in Proto-Planetary Disks
• A Census of the Chamaeleon I Star-Forming Region
• The Radial Distribution of H2 and CO in TW Hya as Revealed by Resolved ALMA Observations of CO Isotopologues
• The Spitzer c2d Survey of Weak-line T Tauri Stars II: New Constraints on the Timescale for Planet Building
• Direct mapping of the temperature and velocity gradients in discs. Imaging the vertical CO snow line around IM Lupi
• Spitzer observations of the Orion OB1 association: disk census in the low mass stars
• The Last Gasp of Gas Giant Planet Formation: A Spitzer Study of the 5 Myr-old Cluster NGC 2362
• A Spitzer Census of Transitional Protoplanetary Disks with AU-Scale Inner Holes
• The Spitzer Space Telescope Survey of the Orion A and B Molecular Clouds II: the Spatial Distribution and Demographics of Dusty Young Stellar Objects
• A Multi-color Optical Survey of the Orion Nebula Cluster. II. the H-R diagram
• The Gould's Belt Distances Survey (GOBELINS). V. Distances and Kinematics of the Perseus molecular cloud
• Highly structured disk around the planet host PDS 70 revealed by high-angular resolution observations with ALMA
• Dust retention in protoplanetary disks
• Disk Evolution in the three Nearby Star-Forming Regions of Taurus, Chamaeleon, and Ophiuchus
• Chemical Imaging of the CO Snow Line in the HD 163296 Disk
• Structure and kinematics of the Taurus star-forming region from Gaia-DR2 and VLBI astrometry
• Inside-Out Evacuation of Transitional Protoplanetary Disks by the Magneto-Rotational Instability
• A Spitzer c2d Legacy Survey to Identify and Characterize Disks with Inner Dust Holes
• Can dead zones create structures like a transition disk?
• On the Transitional Disk Class: Linking Observations of T Tauri Stars & Physical Disk Models
• Resolving the CO Snow Line in the Disk around HD 163296
• C/O and Snowline Locations in Protoplanetary Disks: The Effect of Radial Drift and Viscous Gas Accretion
• New Members of the Scorpius Centaurus Complex and Ages of its sub-regions
• Spectroscopy of Very Low Mass Stars and Brown Dwarfs in the Lambda Orionis Star Forming Region. I. Enlarging the census down to the planetary mass domain in Collinder 69
• Age Determination in Upper Scorpius with Eclipsing Binaries
• The Gaia-ESO Survey: Chromospheric Emission, Accretion Properties, and Rotation in $\gamma$ Velorum and Chamaeleon I
• An ALMA survey of DCN/H${}^{13}$CN and DCO${}^{+}$/H${}^{13}$CO${}^{+}$ in protoplanetary disks
• Tracing water vapor and ice during dust growth
• Constraints from Dust Mass and Mass Accretion Rate Measurements on Angular Momentum Transport in Protoplanetary Disks
• FLAMES spectroscopy of low-mass stars in the young clusters sigma Ori and lambda Ori
• A WISE Survey of Circumstellar Disks in Taurus
• Strong Near-Infrared Emission Interior to the Dust-Sublimation Radius of Young Stellar Objects MWC275 and AB Aur
• NUV Excess in Slowly Accreting T Tauri Stars: Limits Imposed by Chromospheric Emission
• The Gaia-ESO Survey: Sodium and aluminium abundances in giants and dwarfs - Implications for stellar and Galactic chemical evolution
• The origin and evolution of transition discs: successes, problems and open questions
• Carbon-rich planet formation in a solar composition disk
• Disc Clearing of Young Stellar Objects: Evidence for Fast Inside-out Dispersal
• The Gaia-ESO Survey: Lithium depletion in the Gamma Velorum cluster and inflated radii in low-mass pre-main-sequence stars
• Spitzer Infrared Spectrograph survey of young stars in the Chamaeleon I star-forming region
• An Enhanced Spectroscopic Census of the Orion Nebula Cluster
• A spectroscopic survey of Herbig Ae/Be stars with X-Shooter II: Accretion diagnostic lines
• Spitzer Observations of the Lambda Orionis cluster. II. Disks around solar-type and low mass stars
• Curved walls: Grain growth, settling, and composition patterns in T Tauri disk dust sublimation fronts
• Using Ice and Dust Lines to Constrain the Surface Densities of Protoplanetary Disks
• A spectroscopic census in young stellar regions: the Sigma Orionis cluster
• The Gaia DR2 view of the Gamma Velorum cluster: resolving the 6D structure
• The Gaia-ESO Survey: membership and Initial Mass Function of the Gamma Velorum cluster
• The Gaia-ESO Survey: the first abundance determination of the pre-main-sequence cluster Gamma Velorum
• A Herschel view of protoplanetary disks in the $\sigma$ Ori cluster
• Three-dimensional structure of the Upper Scorpius association with the Gaia first data release
• Herschel Observations of Protoplanetary Disks in Lynds 1641
• A transitional disk around an intermediate mass star in the sparse population of the Orion OB1 Association

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• Testing external photoevaporation in the $\sigma$-Orionis cluster with spectroscopy and disk mass measurements
• The distribution of accretion rates as a diagnostic of protoplanetary disc evolution
• Dispersal timescale of protoplanetary disks in the low-metallicity young cluster Dolidze 25
• A Theoretical Framework for the Mass Distribution of Gas Giant Planets forming through the Core Accretion Paradigm
• Understanding the angular momentum evolution of T Tauri and Herbig Ae/Be stars
• NGTS clusters survey $-$ V: Rotation in the Orion Star-forming Complex
• Gas disk interactions, tides and relativistic effects in the rocky planet formation at the substellar mass limit
• The NEMESIS Catalogue of Young Stellar Objects for the Orion Star Formation Complex. I. General description of data curation
• A Data-Driven Search For Mid-Infrared Excesses Among Five Million Main-Sequence FGK Stars
• Pre-main Sequence Brackett Emitters in the APOGEE DR17 Catalog: Line Strengths and Physical Properties of Accretion Columns
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