这些形状移位的星系是用巨大蒙片拍下来的。两个冰冷的蓝色眼睛实际上分别是两个处于合并过程中星系的中心,叫做NGC2207和NGC2163,并且遮掩处是他们的旋臂。假色图片中包括了来自NASA斯必泽空间望远镜的红外波段数据和劳资NASA哈勃空间望远镜的可见光波段的数据(蓝色/绿色)
NGC2207和IC2163相遇并开始一场重力探戈舞是在40000000年前。两个星系彼此吸引,这刺激了恒星的形成。最后,当两个星系相遇到一起时,这个宇宙巨球也就走向了末路。这个双人舞位于距离大犬座140000000光年的地方。
来自斯必泽的红外数据是图中最明亮的局部星系尘埃,另外来自哈勃的可见光数据是表示图中恒星亮光。在哈勃所拍的唯一这张的图片中(这图片并不在这)局部尘埃是以暗带形式出现
来自哈勃的数据对应的波长是0.44和0.55微米光(蓝色和绿色,各自的)。来自斯必泽的数据表示波长为8微米的光。
自翻,有错处,请指教
These shape-shifting galaxies have taken on the form of a giant mask. The icy blue eyes are actually the cores of two merging galaxies, called NGC 2207 and IC 2163, and the mask is their spiral arms. The false-colored image consists of infrared data from NASA's Spitzer Space Telescope (red) and visible data from NASA's Hubble Space Telescope (blue/green).
NGC 2207 and IC 2163 met and began a sort of gravitational tango about 40 million years ago. The two galaxies are tugging at each other, stimulating new stars to form. Eventually, this cosmic ball will come to an end, when the galaxies meld into one. The dancing duo is located 140 million light-years away in the Canis Major constellation.
The infrared data from Spitzer highlight the galaxies' dusty regions, while the visible data from Hubble indicates starlight. In the Hubble-only image (not pictured here), the dusty regions appear as dark lanes.
The Hubble data correspond to light with wavelengths of .44 and .55 microns (blue and green, respectively). The Spitzer data represent light of 8 microns.
url:http://gallery.spitzer.caltech.e ... ge_name=ssc2006-11b
Object name: NGC2207, IC2163
Object type: galaxy, galaxies
Position (J2000): RA: 06h16m25.00s Dec: -21d22m26.30s
Distance: 140 million light-years
Constellation: Canis Major
大图:3000*1800
[ 本帖最后由 江涛 于 2008-2-21 15:04 编辑 ] |
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