Structure in the Dusty Debris around Vega
Structure in the Dusty Debris around Vega
复制标题
织女星周围尘土飞扬的碎片中的结构
DOI：
10.1086/340691
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Paul T. P. Ho
中科院分区：
文献类型：
--
作者：
D. Wilner;M. Holman;Marc J. Kuchner;Paul T. P. Ho
我们展示了使用 IRAM Plateau de Bure 干涉仪在 1.3 毫米波长、亚毫扬斯基灵敏度和 ~2.”5 分辨率（约 20 AU）下获得的 Vega 系统图像。这些观测结果清楚地检测到恒星光球层和两个尘埃发射峰，分别从恒星向东北和西南偏移 9.”5 和 8.”0。这些偏移发射峰与之前亚毫米图像中可见的勉强分辨的结构一致，并且它们占灰尘发射的很大一部分。观察到的位置存在两个灰尘浓度，这似乎是由一颗具有几个木星质量的看不见的行星在高偏心轨道上的动力学影响来解释的，该行星在主要平均运动共振中捕获了灰尘。
We present images of the Vega system obtained with the IRAM Plateau de Bure interferometer at a 1.3 mm wavelength with submillijansky sensitivity and ~2.″5 resolution (about 20 AU). These observations clearly detect the stellar photosphere and two dust emission peaks offset from the star by 9.″5 and 8.″0 to the northeast and southwest, respectively. These offset emission peaks are consistent with the barely resolved structure visible in previous submillimeter images, and they account for a large fraction of the dust emission. The presence of two dust concentrations at the observed locations is plausibly explained by the dynamical influence of an unseen planet of a few Jupiter masses in a highly eccentric orbit that traps dust in principal mean motion resonances.
影响因子：
3.2
作者：
V. Mannings;A. Boss;S. Russell
通讯作者：
V. Mannings;A. Boss;S. Russell