Harsono, Daniel;
Long, Feng;
Pinilla, Paola;
Rota, Alessia A;
Manara, Carlo F;
Herczeg, Gregory J;
Johnstone, Doug;
... Shi, Yangfan; + view all
(2024)
Dual-band Observations of the Asymmetric Ring around CIDA 9A: Dead or Alive?
The Astrophysical Journal
, 961
(1)
, Article 28. 10.3847/1538-4357/ad0835.
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Abstract
While the most exciting explanation of the observed dust asymmetries in protoplanetary disks is the presence of protoplanets, other mechanisms can also form the dust features. This paper presents dual-wavelength Atacama Large Millimeter/submillimeter Array observations of a large asymmetric dusty ring around the M-type star CIDA 9A. We detect a dust asymmetry in both 1.3 and 3.1 mm data. To characterize the asymmetric structure, a parametric model is used to fit the observed visibilities. We report a tentative azimuthal shift of the dust emission peaks between the observations at the two wavelengths. This shift is consistent with a dust trap caused by a vortex, which may be formed by an embedded protoplanet or other hydrodynamical instabilities, such as a dead zone. Deep high-spatial-resolution observations of dust and molecular gas are needed to constrain the mechanisms that formed the observed millimeter cavity and dust asymmetry in the protoplanetary disk around CIDA 9A.
| Type: | Article |
|---|---|
| Title: | Dual-band Observations of the Asymmetric Ring around CIDA 9A: Dead or Alive? |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3847/1538-4357/ad0835 |
| Publisher version: | http://dx.doi.org/10.3847/1538-4357/ad0835 |
| Language: | English |
| Additional information: | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10185952 |
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