High-Resolution Images of the Ring Nebula Taken with the Subaru Telescope
High-Resolution Images of the Ring Nebula Taken with the Subaru Telescope
复制标题
用斯巴鲁望远镜拍摄的环形星云高分辨率图像
DOI：
10.1093/pasj/52.1.93
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发表时间：
2000
影响因子：
2.3
通讯作者：
N. Yasuda
中科院分区：
文献类型：
--
作者：
Y. Komiyama;M. Yagi;S. Miyazaki;S. Okamura;S. Tamura;H. Fukushima;M. Doi;H. Furusawa;T. Fuse;M. Hamabe;M. Hayashi;T. Hayashino;K. Imi;M. Iye;N. Kaifu;H. Karoji;W. Kawasaki;M. Kimura;G. Kosugi;F. Nakata;J. Noumaru;N. Okada;T. Sasaki;Y. Sawada;M. Sekiguchi;I. Shelton;K. Shimasaku;Katsuyuki Suzuki;T. Takata;Y. Taniguchi;T. Usuda;T. Yamashita;N. Yasuda
我们目前的高分辨率图像的环星云的Ha;，V，和B波段与斯巴鲁望远镜。Ha图像以前所未有的细节揭示了内部和外部光环的精细结构。内晕最里面的部分，就在主环的外面，可以被认为是一个新的组成部分，在环星云的表面亮度层次。在这个新的组成部分中，还可以看到一个由环和结组成的环状结构，它使内晕看起来像花瓣。外晕被发现显示出类似于内晕的边缘增亮的多节结构，但在更暗的水平。然而，这两个光环之间的典型结的大小明显不同。在Ha图像上测量的中值尺寸为l。“第二和第三条。“2分别位于内晕和外晕。相应的寿命，这是由大小除以热速度定义的，是400年和1200年。将Ha、V、B图像用最大熵法锐化后制成三色图像。这张照片显示了主环的精细结构和穿过中心孔的增强发射带，其分辨率与哈勃太空望远镜拍摄的图像相当。这些新发现的特征对格雷罗等人提出的统一模型有一定的支持，但也带来了更多的挑战。
We present high-resolution images of the Ring Nebula in the Ha;, V, and B bands taken with the Subaru telescope. The Ha image reveals the fine structure of the inner and outer halos in unprecedented detail. The innermost part of the inner halo just outside of the main ring may be identified as a new component in terms of the surface brightness hierarchy seen in the Ring Nebula. A filamentary structure consisting of loops and knots, which gives a petal-like appearance to the inner halo, is also seen in this new component. The outer halo is found to show a limb-brightened knotty structure similar to the inner halo, but at much fainter levels. The typical size of the knots, however, is clearly different between the two halos. The median size measured on the Ha image is l."2 and 3." 2 in the inner and outer halos, respectively. The corresponding lifetime, which is defined by the size divided by the thermal velocity, is 400 years and 1200 years. The tri color image was made with Ha, V, and B images after being sharpened by the maximum-entropy method. The image shows the fine structure of the main ring and the enhanced bands of emission running across the central hole with a resolution comparable to the image taken with the Hubble Space Telescope. The features newly found in the present images may give some support, but more challenges, to the unified model proposed by Guerrero et al.