Evidence for Disk Photoevaporation Driven by the Central Star

Abstract

The lifetime of isolated protoplanetary disks is thought to be set by the combination of viscous accretion and photoevaporation driven by stellar high-energy photons. Observational evidence for magnetospheric accretion in young sun-like stars is robust. Here we report the first observational evidence for disk photoevaporation driven by the central star. We acquired high-resolution (R~30,000) spectra of the [NeII] 12.81 micron line from 7 circumstellar disks using VISIR on Melipal/VLT. We show that the 3 transition disks in the sample all have [NeII] line profiles consistent with those predicted by a photoevaporative flow driven by stellar extreme UV photons. The ~6 km/s blue-shift of the line from the almost face-on disk of TW Hya is clearly inconsistent with emission from a static disk atmosphere and convincingly points to the presence of a photoevaporative wind. We do not detect any [NeII] line close to the stellar velocity from the sample of classical optically thick (non-transition) disks. We conclude that most of the spectrally unresolved [NeII] emission in these less evolved systems arises from jets/outflows rather than from the disk. The pattern of the [NeII] detections and non-detections suggests that extreme UV-driven photoevaporation starts only at a later stage in the disk evolution.

accepted for publication to ApJ

References in corpus (24)

• Photoevaporation of protoplanetary discs II: evolutionary models and observable properties
• Photoevaporation of protoplanetary discs I: hydrodynamic models
• Magnetospheric accretion-ejection processes in the classical T Tauri star AA
• Spectro-astrometric imaging of molecular gas within protoplanetary disk gaps
• X-ray irradiated protoplanetary disk atmospheres I: Predicted emission line spectrum and photoevaporation
• X-ray irradiated protoplanetary disk atmospheres II: Predictions from models in hydrostatic equilibrium
• Line Emission from Gas in Optically Thick Dust Disks around Young Stars
• Formation and Evolution of Planetary Systems: Upper Limits to the Gas Mass in Disks Around Sun-like Stars
• c2d Spitzer IRS Spectra of Disks around T Tauri Stars. III. [Ne II], [Fe I], and H_2 gas-phase lines
• Probing the Dust and Gas in the Transitional Disk of CS Cha with Spitzer
• Neon Fine-Structure Line Emission By X-ray Irradiated Protoplanetary Disks
• Pre-main sequence spectroscopic binaries suitable for VLTI observations
• High spatial resolution mid-infrared observations of the low-mass young star TW Hya
• Spitzer-IRS spectra of disks around T Tauri stars II. PAH emission features
• The Rise and Fall of Debris Disks: MIPS Observations of h and chi Persei and the Evolution of Mid-IR Emission from Planet Formation
• X-rays from T Tau: A test case for accreting T Tauri stars
• SMA observations of young disks: separating envelope, disk, and stellar masses in class I YSOs
• Medium-separation binaries do not affect the first steps of planet formation
• [NeII] emission line profiles from photoevaporative disc winds
• High-resolution Spectroscopy of [Ne II] Emission from TW Hya
• Atomic Diagnostics of X-ray Irradiated Protoplanetary Disks
• An outflow origin of the [NeII] emission in the T Tau triplet
• High Resolution Spectroscopy of [NeII] Emission from AA Tau and GM Aur
• Results from DROXO. II. - [Ne II] and X-ray emission from Rho Ophiuchi young stellar objects

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• Wind-driven Accretion in Protoplanetary Disks. I: Suppression of the Magnetorotational Instability and Launching of the Magnetocentrifugal Wind
• Dynamics of Protoplanetary Disks
• Radiation-Hydrodynamic Models of X-Ray & EUV Photoevaporating Protoplanetary Discs
• On the theory of disc photoevaporation
• Time-Evolution of Viscous Circumstellar Disks due to Photoevaporation by FUV, EUV and X-ray Radiation from the Central Star
• Protoplanetary disc evolution and dispersal: the implications of X-ray photoevaportion
• Towards a Global Evolutionary Model of Protoplanetary Disks
• Turbulence in the TW Hya Disk
• Hall-effect Controlled Gas Dynamics in Protoplanetary Disks: II. Full 3D Simulations toward the Outer Disk
• Magneto-thermal Disk Wind from Protoplanetary Disks
• Giant planet migration, disk evolution, and the origin of transitional disks
• How drifting and evaporating pebbles shape giant planets I: Heavy element content and atmospheric C/O
• On the gas content of transitional disks: a VLT/X-Shooter study of accretion and winds
• Steady state of dust distributions in disk vortices: Observational predictions and applications to transitional disks
• The dispersal of protoplanetary discs I: A new generation of X-ray photoevaporation models
• A Spitzer c2d Legacy Survey to Identify and Characterize Disks with Inner Dust Holes
• Wind-driven Accretion in Protoplanetary Disks --- II: Radial Dependence and Global Picture
• GASPS - a Herschel survey of gas and dust in Protoplanetary Disks: Summary and Initial Statistics
• Accretion in Evolved and Transitional Disks in Cep OB2: Looking for the Origin of the Inner Holes
• Emission Lines from the Gas Disk around TW Hydra and the Origin of the Inner Hole
• Understanding the origin of the [OI] low-velocity component from T Tauri stars
• The Atomic and Molecular Content of Disks Around Very Low-mass Stars and Brown Dwarfs
• The Photoevaporative Wind from the Disk of TW Hya
• The Transitional Protoplanetary Disk Frequency as a Function of Age: Disk Evolution in the Coronet Cluster, Taurus, and Other 1--8 Myr-old Regions
• X-Shooter spectroscopy of young stellar objects: V - Slow winds in T Tauri stars
• Spitzer Spectroscopy of the Transition Object TW Hya
• On the origin of [NeII] 12.81 micron emission from pre-main sequence stars: Disks, jets, and accretion
• Deserts and pile-ups in the distribution of exoplanets due to photoevaporative disc clearing
• Theoretical spectra of photoevaporating protoplanetary discs: An atlas of atomic and low-ionisation emission lines
• Probing stellar accretion with mid-infrared hydrogen lines
• Demographics of Transition Discs in Ophiuchus and Taurus
• Herschel-PACS observation of the 10 Myr old T Tauri disk TW Hya: Constraining the disk gas mass
• Detection of CH+ emission from the disc around HD100546
• High resolution spectroscopy of Ne II emission from young stellar objects
• The dispersal of protoplanetary disks around binary stars
• Free-free Emission and Radio Recombination Lines from Photoevaporating Disks
• The Evolution of Disk Winds from a Combined Study of Optical and Infrared Forbidden Lines
• Modelling mid-infrared molecular emission lines from T Tauri stars
• What are little worlds made of? Stellar abundances and the building blocks of planets
• SEEDS Adaptive Optics Imaging of the Asymmetric Transition Disk Oph IRS 48 in Scattered Light
• Disk Dispersal: Theoretical Understanding and Observational Constraints
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• The interpretation of protoplanetary disc wind diagnostic lines from X-ray photoevaporation and analytical MHD models
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• Probing the Final Stages of Protoplanetary Disk Evolution with ALMA
• A dusty origin for the correlation between protoplanetary disc accretion rates and dust masses
• The kinematics and excitation of infrared water vapor emission from planet-forming disks: results from spectrally-resolved surveys and guidelines for JWST spectra
• JOYS: JWST Observations of Young protoStars: Outflows and accretion in the high-mass star-forming region IRAS23385+605
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• Radiation pressure clear-out of dusty photoevaporating discs
• High Resolution Spectroscopy of [NeII] Emission from AA Tau and GM Aur
• An Ionized Outflow from AB Aur, a Herbig Ae Star with a Transitional Disk
• Imaging the photoevaporating disk and radio jet of GM Aur
• Dust properties and disk structure of evolved protoplanetary disks in Cep OB2: Grain growth, settling, gas and dust mass, and inside-out evolution
• On the origin of [Ne II] emission in young stars: mid-infrared and optical observations with the Very Large Telescope
• Herschel evidence for disk flattening or gas depletion in transitional disks
• A Herschel view of protoplanetary disks in the $\sigma$ Ori cluster
• A photo-evaporative gap in the closest planet forming disc
• A multi-wavelength view of magnetic flaring from PMS stars
• c2d Spitzer IRS spectra of embedded low-mass young stars: gas-phase emission lines
• High-Resolution Near Infrared Spectroscopy of HD 100546: I. Analysis of Asymmetric Ro-Vibrational OH Emission Lines
• The comparative effect of FUV, EUV and X-ray disc photoevaporation on gas giant separations
• High resolution observations of the outer disk around T Cha: the view from ALMA
• Formation of Planetary Populations I: Metallicity & Envelope Opacity Effects
• Circumstellar disks and planets. Science cases for next-generation optical/infrared long-baseline interferometers
• ESO-H$\alpha$~574 and Par-Lup3-4 Jets: Exploring the spectral, kinematical and physical properties
• The long-term evolution of photoevaporating transition discs with giant planets
• High-resolution [O I] line spectral mapping of TW Hya supportive of a magnetothermal wind
• Forbidden line diagnostics of photoevaporative disc winds
• M Stars in the TW Hya Association: Stellar X-rays and Disk Dissipation
• Fine-Structure Line Emission from the Outflows of Young Stellar Objects
• Remnant gas in evolved circumstellar disks: Herschel PACS observations of 10-100 Myr old disk systems
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• Changing disc compositions via internal photoevaporation I: Solar-mass stars
• Modeling JWST MIRI-MRS Observations of T Cha: Mid-IR Noble Gas Emission Tracing a Dense Disk Wind
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• Formation of Planetary Populations II: Effects of Initial Disk Size & Radial Dust Drift
• Constraints on photoevaporation models from (lack of) radio emission in the Corona Australis protoplanetary disks
• Variability in the CO ro-vibrational lines from HD163296
• The [Ne III] Jet of DG Tau and its Ionization Scenarios
• High-resolution [OI] line spectral mapping of TW Hya consistent with X-ray driven photoevaporation
• Disk evolution and the fate of water
• The role of FUV Pumping in exciting the [Oi] lines in Protostellar Disks and Winds
• The general applicability of self-similar solutions for thermal disc winds
• Connecting Planetary Composition with Formation
• Lyman-alpha Scattering Models Trace Accretion and Outflow Kinematics in T Tauri Systems
• Mid-infrared evidence for iron-rich dust in the multi-ringed inner disk of HD 144432
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