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Molecules with ALMA at Planet-forming Scales (MAPS): A Circumplanetary Disk Candidate in Molecular-line Emission in the AS 209 Disk

Authors: Jaehan Bae, Richard Teague, Sean M. Andrews, Myriam Benisty, Stefano Facchini, Maria Galloway-Sprietsma, Ryan A. Loomis, Yuri Aikawa, Felipe Alarcón, Edwin Bergin, Jennifer B. Bergner, Alice S. Booth, Gianni Cataldi, L. Ilsedore Cleeves, Ian Czekala, Viviana V. Guzmán, Jane Huang, John D. Ilee, Nicolas T. Kurtovic, Charles J. Law, Romane Le Gal, Yao Liu, Feng Long, François Ménard, Karin I. Öberg, Laura M. Pérez, Chunhua Qi, Kamber R. Schwarz, Anibal Sierra, Catherine Walsh, David J. Wilner, Ke Zhang

Jaehan Bae et al 2022 The Astrophysical Journal Letters 934 .

Provider: AAS Journals

Caption: Figure 1.

Selected ¹²CO J = 2−1 channel maps. The upper panels show an annular gap. The black dashed ellipses present the projected circular orbit with a radius of 206 au. Lower panels show a large velocity perturbation on the southern side of the disk (highlighted with black circles). A similar perturbation is not present on the northern side of the disk, emphasizing the localized nature of the perturbation. The synthesized beam is presented in the lower-left corner of each panel. The color map starts at 5σ ≃ 3.3 mJy beam⁻¹.

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