来源:钱德拉X射线空间望远镜网站
本帖原名"钱德拉X射线空间望远镜眼中的宇宙".但翻译后发现除钱德拉拍摄的X射线图片外,还有其它空间望远镜拍的图片和几种不同波段的合成图片.故更改名字。己有朋友帮忙翻译了一些将持续更新,第一页是星系的图片,第二页将更新超新星的图片。
M82
Images from three of NASA's Great Observatories were combined to create this spectacular, multiwavelength view of the starburst galaxy M82. Optical light from stars (yellow-green/Hubble Space Telescope) shows the disk of a modest-sized, apparently normal galaxy.
结合来自NASA的3架大天文台的照片,得出了这张壮观的星爆星系M82多波段图象。来自恒星的可见光(图中为黄/绿色,哈勃太空望远镜拍摄)显示出的是一个中等大小、外观正常的星系盘。
Another Hubble observation designed to image 10,000 degree Celsius hydrogen gas (orange) reveals a startlingly different picture of matter blasting out of the galaxy. The Spitzer Space Telescope infrared image (red) shows that cool gas and dust are also being ejected. Chandra's X-ray image (blue) reveals gas that has been heated to millions of degrees by the violent outflow. The eruption can be traced back to the central regions of the galaxy where stars are forming at a furious rate, some 10 times faster than in the Milky Way Galaxy.
哈勃的另一张照片用于拍摄10000摄氏度左右的中性氢气体(图中呈橙色),它揭示出了惊人不同的又一场面,物质正从星系中冲出。斯必泽太空望远镜的红外图象(红色)显示的是外抛的冷气体与尘埃。钱德拉的X射线图象(蓝色)展现的则是被狂暴的外流物加热到数百万度的气体。喷出物可以追溯到星系的中心区域,这里的恒星在以10倍于我们银河系的狂暴速度诞生着。
Many of these newly formed stars are very massive and race through their evolution to explode as supernovas. Vigorous mass loss from these stars before they explode, and the heat generated by the supernovas drive the gas out of the galaxy at millions of miles per hour. It is thought that the expulsion of matter from a galaxy during bursts of star formation is one of the main ways of spreading elements like carbon and oxygen throughout the universe.
许多新近形成的恒星质量都很大,并会快速演化到爆发的超新星。在爆发之前,这些恒星会发生剧烈的物质损失,而超新星产生的热量也可以将气体以每小时几百万英里的速度驱出星系。人们认为,星系在狂暴的产星过程中外抛的物质是将碳、氧等元素洒遍宇宙的一大主要途径。
The burst of star formation in M82 is thought to have been initiated by shock waves generated in a close encounter with a large nearby galaxy, M81, about 100 million years ago. These shock waves triggered the collapse of giant clouds of dust and gas in M82. In another 100 million years or so, most of the gas and dust will have been used to form stars, or blown out of the galaxy, so the starburst will subside.
人们认为,引发M82中恒星形成的原因是1亿年前与邻近星系M81近距离遭遇产生的激波。激波促发了M82中巨型气体尘埃云的坍缩。差不多再过1亿年,大多数气体和尘埃要么用于产星活动,要么被吹出星系,因而星爆会终止。
下图是三个观测站的合成图像
Chandra X-ray Images of M82, Broadband & 3-Color
钱德拉拍摄的M82 X射线图象,宽波段图与3色图
Chandra's X-ray image reveals gas that has been heated to millions of degrees by the violent outflow of matter blasting out of the galaxy. The eruption can be traced back to the central regions of the galaxy where stars are forming at a furious rate, some 10 times faster than in the Milky Way Galaxy. Many of these newly formed stars are very massive and race through their evolution to explode as supernovas. Vigorous mass loss from these stars before they explode, and the heat generated by the supernovas drive the gas out of the galaxy at millions of miles per hour. It is thought that the expulsion of matter from a galaxy during bursts of star formation is one of the main ways of spreading elements like carbon and oxygen throughout the universe. The Chandra X-ray image on the left is shown in the broadband color scheme used in the X-ray/infrared/optical composite. The image on the right is Chandra's 3-color X-ray view where red, green, and blue represent low, medium, and high-energy X-rays respectively.
Scale: Image is 7.9 arcmin across.
钱德拉拍摄的X射线图象展现出了被狂暴的外流物加热到数百万度的气体。喷出物可以追溯到星系的中心区域,这里有恒星在以10倍于我们银河系的狂暴速度诞生着。许多新近形成的恒星质量都很大,并会快速演化到爆发的超新星。在爆发之前,这些恒星会发生剧烈的物质损失,而超新星产生的热量也可以将气体以每小时几百万英里的速度驱出星系。人们认为,星系在狂暴的产星过程中外抛的物质是将碳、氧等元素洒遍宇宙的一大主要途径。左侧这张钱德拉的X射线照片是使用X射线/红外/可见光合成图中的宽波段着色法显示的。右侧是钱德拉的三色X射线图,红、绿、蓝三色分别代表低能、中能与高能X射线。
比例:图象覆盖的视场是7.9角分
[ 本帖最后由 寻找拉玛 于 2008-2-2 21:56 编辑 ] |
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