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

作　　者：Min Zhao Haochuan Yu Zhengxiang Li 

机构地区：[1]Department of Astronomy,Beijing Normal University,Beijing 100875,China [2]Sub-department of Astrophysics,Department of Physics,University of Oxford,Oxford,OX13RH,UK

出　　处：《Research in Astronomy and Astrophysics》2024年第6期110-118,共9页天文和天体物理学研究（英文版）

基　　金：supported by the National Key Research and Development Program of China grant No.2021YFC2203001;National Natural Science Foundation of China(NSFC,Grant Nos.12322301 and 12275021);the Strategic Priority Research Program of the Chinese Academy of Sciences,grant No.XDB2300000;the Interdiscipline Research Funds of Beijing Normal University。

摘　　要：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^(12)CO(J=2-1),^(13)CO(J=2-1),and C^(18)O(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.

关 键 词：protoplanetary disks planet-disk interactions planet-star interactions 

分 类 号：P134[天文地球—天体力学]