首页|Probing the Kinematic Signatures of Planet Formation in the Gas Disk of MWC 480

Probing the Kinematic Signatures of Planet Formation in the Gas Disk of MWC 480

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The disk around MWC 480 has shown multiple substructures in both dust and gas observations,possibly suggesting ongoing planet formation in situ.In this paper,we explore the gas kinematics of the MWC 480 disk by analyzing the archival Atacama Large Millimeter/submillimeter Array observations of 12CO(J=2-1),13CO(J=2-1),and C18O(J=2-1).By modeling the line-of-sight velocities,inferred from the Doppler shifts of the emission lines,we are able to decompose the three-dimensional(3D)velocity field of the disk into rotational,radial,and vertical components.Further analysis reveals the presence of large-scale gas flows in the(r,z)plane.Notably,we identify potential meridional flows across various heights as traced by all three CO isotopologues in the 80-120 au region,possibly associated with ongoing planet formation activities in this region.Moreover,we find upward flows near 200 au for all three CO isotopologues,which may point to the presence of disk winds.

protoplanetary disksplanet-disk interactionsplanet-star interactions

Min Zhao、Haochuan Yu、Zhengxiang Li

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Department of Astronomy,Beijing Normal University,Beijing 100875,China

Sub-department of Astrophysics,Department of Physics,University of Oxford,Oxford,OX1 3RH,UK

National Key Research and Development Program of ChinaNational Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Strategic Priority Research Program of the Chinese Academy of SciencesInterdiscipline Research Funds of Beijing Normal University

2021YFC22030011232230112275021XDB2300000

2024

10.1088/1674-4527/ad3ec7

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(6)