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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.18717 |
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| _version_ | 1866916707895869440 |
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| author | Pinte, Christophe Ilee, John D. Huang, Jane Benisty, Myriam Facchini, Stefano Fukagawa, Misato Teague, Richard Bae, Jaehan Barraza-Alfaro, Marcelo Cataldi, Gianni Cuello, Nicolas Curone, Pietro Czekala, Ian Fasano, Daniele Flock, Mario Galloway-Sprietsma, Maria Garg, Himanshi Hall, Cassandra Hammond, Iain Izquierdo, Andres F. Lesur, Geoffroy Lodato, Giuseppe Longarini, Cristiano Loomis, Ryan A. Masset, Frederic Menard, Francois Orihara, Ryuta Price, Daniel J. Rosotti, Giovanni Stadler, Jochen Yen, Hsi-Wei Wafflard-Fernandez, Gaylor Wilner, David J. Winter, Andrew J. Wolfer, Lisa Yoshida, Tomohiro C. Zawadzki, Brianna |
| author_facet | Pinte, Christophe Ilee, John D. Huang, Jane Benisty, Myriam Facchini, Stefano Fukagawa, Misato Teague, Richard Bae, Jaehan Barraza-Alfaro, Marcelo Cataldi, Gianni Cuello, Nicolas Curone, Pietro Czekala, Ian Fasano, Daniele Flock, Mario Galloway-Sprietsma, Maria Garg, Himanshi Hall, Cassandra Hammond, Iain Izquierdo, Andres F. Lesur, Geoffroy Lodato, Giuseppe Longarini, Cristiano Loomis, Ryan A. Masset, Frederic Menard, Francois Orihara, Ryuta Price, Daniel J. Rosotti, Giovanni Stadler, Jochen Yen, Hsi-Wei Wafflard-Fernandez, Gaylor Wilner, David J. Winter, Andrew J. Wolfer, Lisa Yoshida, Tomohiro C. Zawadzki, Brianna |
| contents | We analyze the $^{12}$CO $J=3-2$ data cubes of the disks in the exoALMA program. 13/15 disks reveal a variety of kinematic substructures in individual channels: large-scale arcs or spiral arms, localized velocity kinks, and/or multiple faints arcs that appear like filamentary structures on the disk surface. We find kinematic signatures that are consistent with planet wakes in six disks: AA Tau, SY Cha, J1842, J1615, LkCa 15 and HD 143006. Comparison with hydrodynamical and radiative transfer simulations suggests planets with orbital radii between 80 and 310\,au and masses between 1 and 5 M$_\mathrm{Jup}$. Additional kinematic substructures limit our ability to place tight constraints on the planet masses. When the inclination is favorable to separate the upper and lower surfaces (near 45$^\mathrm{o}$, i.e. in 7/15 disks), we always detect the vertical CO snowline and find that the $^{12}$CO freeze-out is partial in the disk midplane, with a depletion factor of $\approx 10^{-3}$ - $10^{-2}$ compared to the warm molecular layer. In these same seven disks, we also systematically detect evidence of CO desorption in the outer regions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_18717 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | exoALMA. X. channel maps reveal complex $^{12}$CO abundance distributions and a variety of kinematic structures with evidence for embedded planets Pinte, Christophe Ilee, John D. Huang, Jane Benisty, Myriam Facchini, Stefano Fukagawa, Misato Teague, Richard Bae, Jaehan Barraza-Alfaro, Marcelo Cataldi, Gianni Cuello, Nicolas Curone, Pietro Czekala, Ian Fasano, Daniele Flock, Mario Galloway-Sprietsma, Maria Garg, Himanshi Hall, Cassandra Hammond, Iain Izquierdo, Andres F. Lesur, Geoffroy Lodato, Giuseppe Longarini, Cristiano Loomis, Ryan A. Masset, Frederic Menard, Francois Orihara, Ryuta Price, Daniel J. Rosotti, Giovanni Stadler, Jochen Yen, Hsi-Wei Wafflard-Fernandez, Gaylor Wilner, David J. Winter, Andrew J. Wolfer, Lisa Yoshida, Tomohiro C. Zawadzki, Brianna Earth and Planetary Astrophysics Solar and Stellar Astrophysics We analyze the $^{12}$CO $J=3-2$ data cubes of the disks in the exoALMA program. 13/15 disks reveal a variety of kinematic substructures in individual channels: large-scale arcs or spiral arms, localized velocity kinks, and/or multiple faints arcs that appear like filamentary structures on the disk surface. We find kinematic signatures that are consistent with planet wakes in six disks: AA Tau, SY Cha, J1842, J1615, LkCa 15 and HD 143006. Comparison with hydrodynamical and radiative transfer simulations suggests planets with orbital radii between 80 and 310\,au and masses between 1 and 5 M$_\mathrm{Jup}$. Additional kinematic substructures limit our ability to place tight constraints on the planet masses. When the inclination is favorable to separate the upper and lower surfaces (near 45$^\mathrm{o}$, i.e. in 7/15 disks), we always detect the vertical CO snowline and find that the $^{12}$CO freeze-out is partial in the disk midplane, with a depletion factor of $\approx 10^{-3}$ - $10^{-2}$ compared to the warm molecular layer. In these same seven disks, we also systematically detect evidence of CO desorption in the outer regions. |
| title | exoALMA. X. channel maps reveal complex $^{12}$CO abundance distributions and a variety of kinematic structures with evidence for embedded planets |
| topic | Earth and Planetary Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2504.18717 |