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 - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue The Astrophysical journal letters Année : 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

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

Résumé

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 et 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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