合并星系NGC 1316中的暗猛犸象树干和宇宙双螺旋机制
Dark mammoth trunks in the merging galaxy NGC 1316 and a mechanism of cosmic double helices
摘要：
NGC 1316是一个巨大的椭圆星系，包含复杂的黑暗尘埃网络。这些特征的形态已经使用哈勃太空望远镜的高级巡天照相机图像进行了详细的检查。结果发现，大部分的功能是由长的细丝。此外，还存在着大量的暗结构，从灯丝向内突出。这些结构中的许多结构与银河系H II区域的象鼻惊人地相似，尽管要大得多。这种结构被称为猛犸象的躯干，通常是直立的，形状通常类似于字母V或Y。在一些猛犸象的躯干中，Y的茎可以分解成两个或更多的细丝，其中许多细丝显示出相互缠绕的迹象。一个模型的猛犸象的鼻子，有关最近的理论大象的鼻子，提出。基于磁化细丝，该模型能够解释所观察到的猛犸象躯干的各种形状，包括躯干结构。
英文摘要：
NGC 1316 is a giant, elliptical galaxy containing a complex network of dark, dust features. The morphology of these features has been examined in some detail using a Hubble Space Telescope, Advanced Camera for Surveys image. It is found that most of the features are constituted of long filaments. There also exist a great number of dark structures protruding inwards from the filaments. Many of these structures are strikingly similar to elephant trunks in H II regions in the Milky Way Galaxy, although much larger. The structures, termed mammoth trunks, generally are filamentary and often have shapes resembling the letters V or Y. In some of the mammoth trunks the stem of the Y can be resolved into two or more filaments, many of which showing signs of being intertwined. A model of the mammoth trunks, related to a recent theory of elephant trunks, is proposed. Based on magnetized filaments, the model is capable of giving an account of the various shapes of the mammoth trunks observed, including the twined structures.
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