A Cavity of Large Grains in the Disk Around the Group II Herbig Ae/Be Star HD 142666

Abstract

Herbig Ae/Be (HAeBe) stars have been classified into Group I or Group II, which were initially thought to be flared and flat disks, respectively. Several Group I sources have been shown to have large gaps, suggesting ongoing planet formation, while no large gaps have been found in the disks of Group II sources. We analyzed the disk around the Group II source, HD 142666, using irradiated accretion disk modeling of the broad-band spectral energy distribution along with the 1.3 millimeter spatial brightness distribution traced by Atacama Large Millimeter and Submillimeter Array (ALMA) observations. Our model reproduces the available data, predicting a high degree of dust settling in the disk, which is consistent with the Group II classification of HD 142666. In addition, the observed visibilities and synthesized image could only be reproduced when including a depletion of large grains out to ~16 au in our disk model, although the ALMA observations did not have enough angular resolution to fully resolve the inner parts of the disk. These results may suggest that some disks around Group II HAeBe stars have cavities of large grains as well. Further ALMA observations of Group II sources are needed to discern how commonly cavities occur in this class of objects, as well as to reveal their possible origins.

arXiv comment11 pages, 3 figures, accepted for publication by The Astrophysical Journal

References in corpus (37)

• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
• Ringed Substructure and a Gap at 1 AU in the Nearest Protoplanetary Disk
• ISO spectroscopy of circumstellar dust in 14 Herbig Ae/Be systems: towards an understanding of dust processing
• Flaring vs. self-shadowed disks: the SEDs of Herbig Ae/Be stars
• Effects of Dust Growth and Settling in T Tauri Disks
• A Survey and Analysis of Spitzer Infrared Spectrograph Spectra of T Tauri Stars in Taurus
• On the Diversity of the Taurus Transitional Disks: UX Tau A & Lk Ca 15
• Unveiling the Structure of Pre-Transitional Disks
• Accretion Rates in Herbig Ae stars
• The Truncated Disk of CoKu Tau/4
• CO emission from discs around isolated HAeBe and Vega-excess stars
• A search for evolved dust in Herbig Ae stars
• The gas temperature in the surface layers of protoplanetary disks
• Structure of Herbig AeBe disks at the milliarcsecond scale A statistical survey in the H band using PIONIER-VLTI
• An Inner Hole in the Disk around TW Hydrae Resolved in 7 Millimeter Dust Emission
• Understanding the spectra of isolated Herbig stars in the frame of a passive disk model
• Identifying gaps in flaring Herbig Ae/Be disks using spatially resolved mid-infrared imaging. Are all group I disks transitional?
• Accretion rates and accretion tracers of Herbig Ae/Be stars
• The complex structure of the disk around HD100546: the inner few astronomical units
• Dust Trapping by Vortices in Transitional Disks: Evidence for Non-ideal MHD Effects in Protoplanetary Disks
• Measuring Protoplanetary Disk Accretion with H I Pf-beta
• PAH emission from Herbig AeBe stars
• Submillimeter polarization observation of the protoplanetary disk around HD 142527
• The SPHERE view of the planet-forming disk around HD100546
• On the Commonality of 10-30AU Sized Axisymmetric Dust Structures in Protoplanetary Disks
• The structure of disks around intermediate-mass young stars from mid-infrared interferometry. Evidence for a population of group II disks with gaps
• A sub-millimeter Mapping Survey of Herbig AeBe Stars
• Accretion-related properties of Herbig Ae/Be stars. Comparison with T Tauris
• Evolution of protoplanetary disks from their taxonomy in scattered light: Group I vs. Group II
• Resolved images of the protoplanetary disk around HD 100546 with ALMA
• Observing the linked depletion of dust and CO gas at 0.1-10 au in disks of intermediate-mass stars
• High-resolution 25 μm imaging of the disks around Herbig Ae/Be stars
• The far-infrared behaviour of Herbig Ae/Be discs: Herschel PACS photometry
• Multiwavelength interferometric observations and modeling of circumstellar disks
• ALMA and VLA Observations of the HD 141569 System
• The inner circumstellar disk of the UX Ori star V1026 Sco

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• The Disk Substructures at High Angular Resolution Project (DSHARP): II. Characteristics of Annular Substructures
• Consistent dust and gas models for protoplanetary disks III. Models for selected objects from the FP7 DIANA project
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• The mass and size of Herbig disks as seen by ALMA
• The SPHERE view of the jet and the envelope of RY Tau
• What happened before? -- The disks around the precursors of young Herbig Ae/Be stars
• Determining Dust Properties in Protoplanetary Disks: SED-derived Masses and Settling With ALMA
• Simultaneous spectral energy distribution and near-infrared interferometry modeling of HD 142666
• Hints of a Population of Solar System Analog Planets from ALMA
• An SMA Survey of Chemistry in Disks around Herbig AeBe Stars
• A transitional disk around an intermediate mass star in the sparse population of the Orion OB1 Association
• Kinematic Evidence of an Embedded Protoplanet in HD 142666 Identified by Machine Learning
• The asymmetric structure of the inner disc around HD 142527 A with VLTI/MATISSE