Molecules with ALMA at Planet-forming Scales (MAPS). XVI. Characterizing the Impact of the Molecular Wind on the Evolution of the HD 163296 System
In: The Astrophysical Journal Supplement Series ; https://insu.hal.science/insu-03672365 ; The Astrophysical Journal Supplement Series, 2021, 257, ⟨10.3847/1538-4365/ac1ad4⟩, 2021
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International audience ; During the main phase of evolution of a protoplanetary disk, accretion regulates the inner-disk properties, such as the temperature and mass distribution, and in turn, the physical conditions associated with planet formation. The driving mechanism behind accretion remains uncertain; however, one promising mechanism is the removal of a fraction of angular momentum via a magnetohydrodynamic (MHD) disk wind launched from the inner tens of astronomical units of the disk. This paper utilizes CO isotopologue emission to study the unique molecular outflow originating from the HD 163296 protoplanetary disk obtained with the Atacama Large Millimeter/submillimeter Array. HD 163296 is one of the most well-studied Class II disks and is proposed to host multiple gas-giant planets. We robustly detect the large-scale rotating outflow in the 12 CO J = 2 - 1 and the 13 CO J = 2 - 1 and J = 1 - 0 transitions. We constrain the kinematics, the excitation temperature of the molecular gas, and the mass-loss rate. The high ratio of the rates of ejection to accretion (5-50), together with the rotation signatures of the flow, provides solid evidence for an MHD disk wind. We find that the angular momentum removal by the wind is sufficient to drive accretion though the inner region of the disk; therefore, accretion driven by turbulent viscosity is not required to explain HD 163296's accretion. The low temperature of the molecular wind and its overall kinematics suggest that the MHD disk wind could be perturbed and shocked by the previously observed high-velocity atomic jet. This paper is part of the MAPS special issue of the Astrophysical Journal Supplement.
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Molecules with ALMA at Planet-forming Scales (MAPS). XVI. Characterizing the Impact of the Molecular Wind on the Evolution of the HD 163296 System
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Autor/in / Beteiligte Person: | Booth, Alice S. ; Tabone, Benoît ; Ilee, John D. ; Walsh, Catherine ; Aikawa, Yuri ; Andrews, Sean M. ; Bae, Jaehan ; Bergin, Edwin A. ; Bergner, Jennifer B. ; Bosman, Arthur D. ; Calahan, Jenny K. ; Cataldi, Gianni ; Cleeves, L. Ilsedore ; Czekala, Ian ; Guzmán, Viviana V. ; Huang, Jane ; Law, Charles J. ; Le Gal, Romane ; Long, Feng ; Loomis, Ryan A. ; Ménard, François ; Nomura, Hideko ; Öberg, Karin I. ; Qi, Chunhua ; Schwarz, Kamber R. ; Teague, Richard ; Tsukagoshi, Takashi ; Wilner, David J. ; Yamato, Yoshihide ; Zhang, Ke ; Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) ; Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ) ; Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France ; ANR-16-CE31-0013,PLANET-FORMING-DISKS,De meilleurs modèles pour de meilleures données(2016) |
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Zeitschrift: | The Astrophysical Journal Supplement Series ; https://insu.hal.science/insu-03672365 ; The Astrophysical Journal Supplement Series, 2021, 257, ⟨10.3847/1538-4365/ac1ad4⟩, 2021 |
Veröffentlichung: | HAL CCSD ; IOPscience, 2021 |
Medientyp: | academicJournal |
DOI: | 10.3847/1538-4365/ac1ad4 |
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