The Disk Substructures at High Angular Resolution Project (DSHARP). X. Multiple Rings, a Misaligned Inner Disk, and a Bright Arc in the Disk around the T Tauri star HD 143006 - Archive ouverte HAL Access content directly
Journal Articles The Astrophysical Journal Letters Year : 2018

The Disk Substructures at High Angular Resolution Project (DSHARP). X. Multiple Rings, a Misaligned Inner Disk, and a Bright Arc in the Disk around the T Tauri star HD 143006

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Laura M. Pérez
  • Function : Author
Sean M. Andrews
  • Function : Author
Andrea Isella
Cornelis P. Dullemond
  • Function : Author
Jane Huang
  • Function : Author
Nicolás T. Kurtovic
  • Function : Author
Viviana V. Guzmán
  • Function : Author
Zhaohuan Zhu
  • Function : Author
Tilman Birnstiel
  • Function : Author
Shangjia Zhang
  • Function : Author
John M. Carpenter
  • Function : Author
David J. Wilner
  • Function : Author
Luca Ricci
  • Function : Author
Xue-Ning Bai
  • Function : Author
Erik Weaver
  • Function : Author
Karin I. Öberg
  • Function : Author

Abstract

We present a detailed analysis of new Atacama Large Millimeter/submillimeter Array (ALMA) observations of the disk around the T-Tauri star HD 143006, which at 46 mas (7.6 au) resolution reveals new substructures in the 1.25 mm continuum emission. The disk resolves into a series of concentric rings and gaps, together with a bright arc exterior to the rings that resembles hydrodynamical simulations of a vortex and a bridge-like feature connecting the two innermost rings. Although our 12CO observations at similar spatial resolution do not show obvious substructure, they reveal an inner disk depleted of CO emission. From the continuum emission and the CO velocity field we find that the innermost ring has a higher inclination than the outermost rings and the arc. This is evidence for either a small (∼8°) or moderate (∼41°) misalignment between the inner and outer disk, depending on the specific orientation of the near/far sides of the inner/outer disk. We compare the observed substructures in the ALMA observations with recent scattered-light data of this object from the Very Large Telescope/Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE). In particular, the location of narrow shadow lanes in the SPHERE image, combined with pressure-scale height estimates, favor a large misalignment of about 41°. We discuss our findings in the context of a dust-trapping vortex, planet-carved gaps, and a misaligned inner disk due to the presence of an inclined companion to HD 143006.

Dates and versions

insu-03635016 , version 1 (08-04-2022)

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Laura M. Pérez, Myriam Benisty, Sean M. Andrews, Andrea Isella, Cornelis P. Dullemond, et al.. The Disk Substructures at High Angular Resolution Project (DSHARP). X. Multiple Rings, a Misaligned Inner Disk, and a Bright Arc in the Disk around the T Tauri star HD 143006. The Astrophysical Journal Letters, 2018, 869, ⟨10.3847/2041-8213/aaf745⟩. ⟨insu-03635016⟩
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