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Hints of a Population of Solar System Analog Planets from ALMA
The Astrophysical Journal Letters ( IF 8.8 ) Pub Date : 2020-06-03 , DOI: 10.3847/2041-8213/ab94a8
Deryl E. Long 1 , Ke Zhang 1 , Richard Teague 2 , Edwin A. Bergin 1
Affiliation  

The recent Atacama Large Millimeter/submillimeter Array (ALMA) Disk Substructures at High Angular Resolution Project (DSHARP) survey provided illuminating results on the diversity of substructures in planet-forming disks. These substructures trace pebble-sized grains accumulated at local pressure maxima, possibly due to planet–disk interactions or other planet formation processes. DSHARP sources are heavily biased to large and massive disks that only represent the high (dust flux) tail end of the disk population. Thus it is unclear whether similar substructures and corresponding physical processes also occur in the majority of disks that are fainter and more compact. Here we explore the presence and characteristics of features in a compact disk around GQ Lup A, the effective radius of which is 1.5–10 times smaller than those of DSHARP disks. We present our analysis of ALMA 1.3 mm continuum observations of the GQ Lup system. By fitting visibility profiles of the continuum emissio...

中文翻译:

来自ALMA的太阳系模拟行星数量的提示

最近在高角度分辨率项目(DSHARP)上进行的Atacama大毫米/亚毫米阵列(ALMA)磁盘子结构调查提供了有关行星形成盘中子结构多样性的启发性结果。这些子结构可以追踪在局部最大压力下积累的卵石大小的颗粒,这可能是由于行星盘相互作用或其他行星形成过程所致。DSHARP源严重偏向大型磁盘,而大型磁盘仅代表磁盘总体的高(粉尘通量)尾端。因此,目前尚不清楚,在大多数较暗,更紧凑的磁盘中是否也出现了类似的子结构和相应的物理过程。在这里,我们探索GQ Lup A周围的光盘中特征的存在和特征,该光盘的有效半径是DSHARP磁盘的1.5至10倍。我们介绍了对GQ Lup系统的ALMA 1.3毫米连续观测资料的分析。通过拟合连续发射的可见性轮廓...
更新日期:2020-06-03
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