arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.03135astro-ph.SRastro-ph.EPastro-ph.GA
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GW Ori:Action中三星系统与其三周盘的相互作用

GW Ori: Interactions Between a Triple-star System and its Circumtriple Disk in Action

Jiaqing Bi, Nienke van der Marel, Ruobing Dong, Takayuki Muto, Rebecca G. Martin, Jeremy L. Smallwood, Jun Hashimoto, Hauyu Baobab Liu, Hideko Nomura, Yasuhiro … 展开作者

Jiaqing Bi, Nienke van der Marel, Ruobing Dong, Takayuki Muto, Rebecca G. Martin, Jeremy L. Smallwood, Jun Hashimoto, Hauyu Baobab Liu, Hideko Nomura, Yasuhiro Hasegawa, Michihiro Takami, Mihoko Konishi, Munetake Momose, Kazuhiro D. Kanagawa, Akimasa Kataoka, Tomohiro Ono, Michael L. Sitko, Sanemichi Z. Takahashi, Kengo Tomida, Takashi Tsukagoshi

摘要:

GWOri是一个具有罕见的环三重盘的等级三重系统。我们目前阿塔卡马大毫米/亚毫米阵列(ALMA)的1.3毫米尘埃连续和12 CO J=2-1分子气体排放的磁盘的观测。我们第一次在圆盘中确定了三个尘埃环,分别位于46,188和338 AU,估计尘埃质量分别为70-250地球质量。据我们所知,GW Ori的外环是迄今为止在原行星盘中发现的最大的尘埃环。我们使用可见度模型的尘埃连续显示,磁盘有错位的部分和最里面的尘埃环是偏心的。磁盘错位也建议由CO运动学建模。我们解释这些子结构的证据正在进行的动力学之间的相互作用的三星和circumtriple磁盘。

英文摘要:

GW Ori is a hierarchical triple system which has a rare circumtriple disk. We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of 1.3 mm dust continuum and 12CO J=2-1 molecular gas emission of the disk. For the first time, we identify three dust rings in the disk at ~46, 188, and 338 AU, with estimated dust mass of ~70-250 Earth masses, respectively. To our knowledge, the outer ring in GW Ori is the largest dust ring ever found in protoplanetary disks. We use visibility modelling of dust continuum to show that the disk has misaligned parts and the innermost dust ring is eccentric. The disk misalignment is also suggested by the CO kinematics modelling. We interpret these substructures as evidence of ongoing dynamical interactions between the triple stars and the circumtriple disk.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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