本帖最后由 gohomeman1 于 2009-12-17 14:53 编辑
ABOUT THIS IMAGE:
The image at left represents a small region of NGC 2403, a galaxy located 11 million light-years from Earth. The photo was taken two months before a massive star exploded. The image pinpoints the location of the stellar blast, known as supernova 2004dj, within a cluster of massive, generally blue (but some red) stars called Sandage 96. The cluster's total mass is estimated at about 24,000 times the mass of the Sun.
左边的图显示的是NGC 2403的一小块区域，这个星系离地球大约1100万光年。这张图拍摄在超新星爆发前2个月（真幸运哪——译注）。图像精确的对准了超新星SN 2004dj爆发前所在区域，泛蓝（带点红）的星团编号桑德奇96。当时星团的总光度约2.4万个太阳光度。
PS:带有红丝可认为是红移效应，太阳光度当然按绝对星等计算。——译注
The stars in this cluster are so far away that their light blends together, appearing as the light of a single star. The yellow object below and to the left of the cluster is a foreground star in our Milky Way Galaxy. The pink blob at bottom, center is a star-birth region. This image was taken May 8, 2004, with the WIYN 0.9-meter mosaic camera at Kitt Peak National Observatory in Arizona.
由于星团离得太远，它们的星光混合起来看就像一颗恒星。图中左边那颗黄色的恒星是在我们银河系内的前景星。下方的粉红色区域是一块块恒星形成区域。本图摄于2004.5.8，由美国亚利桑纳州基特峰国家天文台的0.9米口径WIYN望远镜获得。
The image at right pinpoints the supernova blast. The photo was taken on Aug. 17, 2004, with the Hubble Space Telescope's Advanced Camera for Surveys. The light from this outburst outshines every star in the massive cluster. Similar blue clusters of stars can be seen throughout the image. The bluish-pink blob towards the bottom of the image is a large star-birth region.
右图摄于2004.8.17，一看就是哈勃ACS拍摄的，清晰度高多少一看便知。SN 2004dj的光芒盖过图中任何星团中的巨星。我们也能从图中看见相似的蓝巨星簇（那几个比较亮的点就是，参看上一楼的标识——译注）。下方红中带蓝的斑点区域是一个大型恒星诞生区域（星云）。
Object Names: SN 2004dj, NGC 2403
对象名称：超新星SN 2004dj，星系NGC 2403
Image Type: Astronomical/Illustration
对象类型：天体/图解
Credit for ground-based image: WIYN/NOAO/AURA/NSF, T. Rector (University of Alaska, Anchorage), Z. Levay and L. Frattare (STScI)
地面望远镜图像版权：基特峰WIYN望远镜、国家光学天文台（NOAO）、美国国家科学基金会(NSF)，阿拉斯加州大学安克雷奇分校 T. Rector，太空望远镜科研所Z. Levay、L. Frattare。
Credit for Hubble image: NASA, ESA, A.V. Filippenko (University of California, Berkeley), P. Challis (Harvard-Smithsonian Center for Astrophysics),et al.
哈勃图像版权：美国宇航局；欧洲空间局（ESA）；加利福尼亚大学伯克利分校 A.V. Filippenko，哈佛史密松天体物理中心 P. Challis；等等。
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