Long-lived Dust Rings around HD 169142

Journal
Date Issued
2020
Author(s)
•
•
•
•
Pinte, Christophe
DOI
Abstract
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations of the protoplanetary disk around HD 169142 reveal a peculiar structure made of concentric dusty rings: a main ring at ∼20 au, a triple system of rings at ∼55-75 au in millimetric continuum emission, and a perturbed gas surface density from the 12CO,13CO, and C18O (J = 2-1) surface brightness profile. In this Letter, we perform 3D numerical simulations and radiative transfer modeling exploring the possibility that two giant planets interacting with the disk and orbiting in resonant locking can be responsible for the origin of the observed dust inner rings structure. We find that in this configuration the dust structure is actually long lived while the gas mass of the disk is accreted onto the star and the giant planets, emptying the inner region. In addition, we also find that the innermost planet is located at the inner edge of the dust ring, and can accrete mass from the disk, generating a signature in the dust ring shape that can be observed in mm ALMA observations.
Volume
888
Issue
1
Start page
L4
Uri
Url
Issn Identifier
2041-8205
Ads BibCode
2020ApJ...888L...4T
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

toci_2020a.pdf

Description
[Administrators only]
Size

886.66 KB

Format

Adobe PDF

Checksum (MD5)

6cfdef8284268fe06bbfb42e43ab1f91

Loading...
Thumbnail Image
Name

toci_2020a_arxiv.pdf

Description
postprint
Size

3.58 MB

Format

Adobe PDF

Checksum (MD5)

04d36031e5667a16d432b987622f5ebd