Infrared Views of the TW Hya Disk

Abstract

The face-on disk around TW Hya is imaged in scattered light at wavelengths of 1.1 and 1.6 micron using the coronagraph in the Near Infrared Camera and Multi Object Spectrometer aboard the Hubble Space Telescope. Stellar light scattered from the optically thick dust disk is seen from 20-230 AU. The surface brightness declines as a power law of r^(-2.6+/-0.1) between 45 and 150 AU. The scattering profile indicates that the disk is flared, not geometrically flat. The disk, while spatially unresolved in thermal radiation at wavelengths of 12 and 18 micron in observations from the W. M. Keck Observatory, shows amorphous and crystalline silicate emission in its spectrum. A disk with silicate grains of a ~1 micron in size in its surface layers can explain the shape of the mid-infrared spectrum. Much larger grains in the disk interior are necessary to fit the millimeter-wave spectral energy distribution, and hence grain growth from an original interstellar size population may have occurred.

26 pages with 8 ps figures, to be published in ApJ

References in corpus (1)

• Near-infrared coronagraphic imaging of the circumstellar disk around TW Hydrae

Cited by in corpus (83)

• Observations of Protoplanetary Disk Structures
• The TW Hya Disk at 870 microns: Comparison of CO and Dust Radial Structures
• Organic molecules in protoplanetary disks around TTauri and HerbigAe stars
• Constraining the X-ray and Cosmic Ray Ionization Chemistry of the TW Hya Protoplanetary Disk: Evidence for a Sub-interstellar Cosmic Ray Rate
• Large grains in the disk of CQ Tau
• The FUV spectrum of TW Hya. I. Observations of H${}_2$ Fluorescence
• Three radial gaps in the disk of TW Hydrae imaged with SPHERE
• Imaging the Disk around TW Hya with the Submillimeter Array
• The Far-Ultraviolet Spectra of TW Hya. II. Models of H2 Fluorescence in a Disk
• Hydrocarbon emission rings in protoplanetary disks induced by dust evolution
• The Vega Debris Disk -- A Surprise from Spitzer
• The Planetary Mass Companion 2MASS1207-3932 B: Temperature, Mass and Evidence for an Edge-On Disk
• X-ray emission from a metal depleted accretion shock onto the classical T Tauri star TW Hya
• Gas and Dust Emission at the Outer Edge of Protoplanetary Disks
• Towards Planetesimals in the Disk around TW Hya: 3.5 centimeter Dust Emission
• The Impact of Dust Evolution and Photoevaporation on Disk Dispersal
• Evolution of emission line activity in intermediate mass young stars
• An Inner Hole in the Disk around TW Hydrae Resolved in 7 Millimeter Dust Emission
• On the Outer Edges of Protoplanetary Dust Disks
• Discovery of a Disk Gap Candidate at 20 AU in TW Hydrae
• Dusty Debris Disks as Signposts of Planets: Implications for SIRTF
• The Circumbinary Ring of KH 15D
• Protoplanetary Disk Masses from Stars to Brown Dwarfs
• On the structure of the transition disk around TW Hya
• The 0.5-2.22-micron Scattered Light Spectrum of the Disk Around TW Hya: Detection of a Partially Filled Disk Gap at 80 AU
• High spatial resolution mid-infrared observations of the low-mass young star TW Hya
• Silicon and Nickel Enrichment in Planet-Host Stars: Observations and Implications for the Core-Accretion Theory of Planet Formation
• Chasing Shadows: Rotation of the Azimuthal Asymmetry in the TW Hya Disk
• VLT/NACO Polarimetric Differential Imaging of HD100546 - Disk Structure and Dust Grain Properties between 10-140 AU
• The time evolution of dusty protoplanetary disc radii: observed and physical radii differ
• The state of protoplanetary material 10 Myr after stellar formation: circumstellar disks in the TW Hydrae association
• The Origins of Fluorescent H2 Emission From T Tauri~Stars
• Evolution of Young Brown Dwarf Disks in the Mid-Infrared
• Near-Infrared Spectroscopy of TW Hya: A Revised Spectral Type and Comparison with Magnetospheric Accretion Models
• Dusty Rings: Signposts of Recent Planet Formation
• Kinematics of the CO Gas in the Inner Regions of the TW Hya Disk
• Detection of crystalline silicates around the T Tauri star Hen 3-600A
• Detections of Ro-Vibrational H${}_2$ Emission from the Disks of T Tauri Stars
• 2-Dust : a Dust Radiative Transfer Code for an Axisymmetric System
• Spiral Arms in Disks: Planets or Gravitational Instability?
• Disks around the Young Stars TW Hya and HD 100546 Imaged at 3.4 Millimeters with the Australia Telescope Compact Array
• First detection of gas-phase ammonia in a planet-forming disk
• Spatially Resolving the Inner Disk of TW Hya
• Peering into the Giant Planet Forming Region of the TW Hydrae Disk with the Gemini Planet Imager
• NACO Polarimetric Differential Imaging of TW Hya: A Sharp Look at the Closest T Tauri Disk
• A multi-wavelength scattered light analysis of the dust grain population in the GG Tau circumbinary ring
• The SEEDS High Contrast Imaging Survey of Exoplanets around Young Stellar Objects
• Adaptive Optics Imaging of the AU Microscopii Circumstellar Disk: Evidence for Dynamical Evolution
• Mid-IR spectroscopy of T Tauri stars in Chamealeon I: evidence for processed dust at the earliest stages
• Measuring the Magnetic Field on the Classical T Tauri Star TW Hydrae
• A Long-Lived Accretion Disk Around a Lithium-Depleted Binary T Tauri Star
• Ten-Micron Observations of Nearby Young Stars
• X-ray Diagnostics of Grain Depletion in Matter Accreting onto T Tauri Stars
• Gas lines from the 5-Myr old optically thin disk around HD141569A. Herschel observations and modeling
• HST-STIS Spatially Resolved Spectroscopy and Coronagraphic Imaging of the TW Hydrae Circumstellar Disk
• Deep imaging search for planets forming in the TW Hya protoplanetary disk with the Keck/NIRC2 vortex coronagraph
• Characterizing the disk around the TW Hydrae Association brown dwarf 2MASSW J1207334-393254
• Mass and Temperature of the TWA 7 Debris Disk
• A Search for Warm Circumstellar Disks in the TW Hydrae Association
• Spectropolarimetry of the Classical T Tauri Star TW Hydrae
• Near-infrared imaging polarimetry of dusty young stars
• A layered edge-on circumstellar disk around HK Tau B
• Color Gradients Detected in the HD 15115 Circumstellar Disk
• Observational Possibility of the "Snow Line" on the Surface of Circumstellar Disks with the Scattered Light
• Formation and evolution of planetary systems: the impact of high angular resolution optical techniques
• Steepening of the 820 micron continuum surface-brightness profile signals dust evolution in TW Hya's disk
• Gas and Dust Associated with the Strange, Isolated, Star BP Piscium
• Analysis of variability of TW Hya as observed by MOST and ASAS in 2009
• A Layered Debris Disk around M Star TWA 7 in Scattered Light
• The absence of sub-minute periodicity in classical T Tauri stars
• The TWA 3 Young Triple System: Orbits, Disks, Evolution
• High-Resolution Optical and Near-Infrared Images of the FS Tauri Circumbinary Disk
• First Ultraviolet Spectrum of a Brown Dwarf: Evidence for H_2 Fluorescence and Accretion
• The surprising evolution of the shadow on the TW Hya disk
• Kinematics of Ionized Gas at 0.01 AU of TW Hya
• The inner structure of the TW Hya Disk as revealed in scattered light
• A Bayesian Framework for Exoplanet Direct Detection and Non-Detection
• The TW Hya Rosetta Stone Project IV: A hydrocarbon rich disk atmosphere
• A Search for NIR Molecular Hydrogen Emission in the CTTS LkHa 264 and the debris disk 49 Cet
• Spatially resolved H2 emission from the disk around T Tau N
• Space-Based Coronagraphic Imaging Polarimetry of the TW Hydrae Disk: Shedding New Light on Self-Shadowing Effects
• High Resolution Observations of Dust Continuum Emission at 340 GHz from the Low-mass T Tauri Star FN Tauri
• Gas and Dust Shadows in the TW Hydrae Disk