دورية أكاديمية
Dual-band Observations of the Asymmetric Ring around CIDA 9A: Dead or Alive?
| العنوان: | Dual-band Observations of the Asymmetric Ring around CIDA 9A: Dead or Alive? |
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| المؤلفون: | Daniel Harsono, Feng Long, Paola Pinilla, Alessia A. Rota, Carlo F. Manara, Gregory J. Herczeg, Doug Johnstone, Giovanni Rosotti, Giuseppe Lodato, Francois Menard, Marco Tazzari, Yangfan Shi |
| المصدر: | The Astrophysical Journal, Vol 961, Iss 1, p 28 (2024) |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2024 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Circumstellar disks, Planet formation, Protoplanetary disks, Astrophysics, QB460-466 |
| الوصف: | 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. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1538-4357 |
| العلاقة: | https://doi.org/10.3847/1538-4357/ad0835Test; https://doaj.org/toc/1538-4357Test; https://doaj.org/article/93e26bb357b14902a906cc7a35980b72Test |
| DOI: | 10.3847/1538-4357/ad0835 |
| الإتاحة: | https://doi.org/10.3847/1538-4357/ad0835Test https://doaj.org/article/93e26bb357b14902a906cc7a35980b72Test |
| رقم الانضمام: | edsbas.BE242194 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 15384357 |
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| DOI: | 10.3847/1538-4357/ad0835 |