天炉星系团
(原标题: The Fornax Cluster of Galaxies)
2022-01-29
浏览次数: 19
天炉座星系团是离我们最近的星系团之一，因其南部星座而得名，其中大部分星系都可以找到。它距离我们大约6200万光年，几乎是我们邻近的仙女座星系的20倍，只比更著名、人口更多的室女座星系团远10%左右。在这幅2度宽的视野中，几乎每一个黄色的斑点都是天炉座星团中的椭圆星系。椭圆星系NGC 1399和NGC 1404是左上角的主要明亮星团成员（但不包括尖尖的前景恒星）。在右下角可以看到一个突出的棒旋星系NGC 1365，它是一个突出的天炉座星团成员。
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Named for the southern constellation toward which most of its galaxies can be found, the Fornax Cluster is one of the closest clusters of galaxies. About 62 million light-years away, it is almost 20 times more distant than our neighboring Andromeda Galaxy, and only about 10 percent farther than the better known and more populated Virgo Galaxy Cluster. Seen across this two degree wide field-of-view, almost every yellowish splotch on the image is an elliptical galaxy in the Fornax cluster. Elliptical galaxies NGC 1399 and NGC 1404 are the dominant, bright cluster members toward the upper left (but not the spiky foreground stars). A standout barred spiral galaxy NGC 1365 is visible on the lower right as a prominent Fornax cluster member.
© Marco Lorenzi