File:Andromeda galaxy Ssc2005-20a1.jpg
原始文件 (8,193 × 2,410像素,文件大小:21.19 MB,MIME类型:image/jpeg)
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描述Andromeda galaxy Ssc2005-20a1.jpg |
English: NASA's Spitzer Space Telescope has captured stunning infrared views of the famous Andromeda galaxy to reveal insights that were only hinted at in visible light.
This Spitzer's 24-micron mosaic is the sharpest image ever taken of the dust in another spiral galaxy. This is possible because Andromeda is a close neighbor to the Milky Way at a mere 2.5 million light-years away. The Spitzer multiband imaging photometer's 24-micron detector recorded 11,000 separate snapshots to create this new comprehensive picture. Asymmetrical features are seen in the prominent ring of star formation. The ring appears to be split into two pieces, forming the hole to the lower right. These features may have been caused by interactions with satellite galaxies around Andromeda as they plunge through its disk. Spitzer also reveals delicate tracings of spiral arms within this ring that reach into the very center of the galaxy. One sees a scattering of stars within Andromeda, but only select stars that are wrapped in envelopes of dust light up at infrared wavelengths. This is a dramatic contrast to the traditional view at visible wavelengths, which shows the starlight instead of the dust. The center of the galaxy in this view is dominated by a large bulge that overwhelms the inner spirals seen in dust. The dust lanes are faintly visible in places, but only where they can be seen in silhouette against background stars. The data were taken on August 25, 2004, the one-year anniversary of the launch of the space telescope. The observations have been transformed into this remarkable gift from Spitzer -- the most detailed infrared image of the spectacular galaxy to date.Español: Imagen de la galaxia de Andrómeda en Infrarrojo. |
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来源 | http://www.spitzer.caltech.edu/images/1493-ssc2005-20a1-Andromeda-in-the-Infrared |
作者 | NASA/JPL-Caltech/K. Gordon (University of Arizona) |
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Public domainPublic domainfalsefalse |
本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zh、NASA版权方针页面或JPL图片使用方针。) | ||
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原始上传日志[编辑]
date/time | username | resolution | size | edit summary | |
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12:34, 13 December 2008 | User:Ceranthor | [4] archive copy at the Wayback Machine | 8,193×2,410 | 21.19 MB | ==License== {{PD-USGov-NASA}} |
07:11, 18 October 2005 | User:Superborsuk | [5][失效链接] | 4,097×1,205 | 1,014 KB | [http://en.wikipedia.org/wiki/Andromeda_Galaxy Andromeda Galaxy] (M31) 2.5 [http://en.wikipedia.org/wiki/light_year ly] Exposure Time: MIPS 24-[http://en.wikipedia.org/wiki/micron micron] image. 100 sec/pixel Image Scale: 2.8 x 0.8 degrees Exposure Date: 2004 August 25 Image Credit: [http://en.wikipedia.org/wiki/NASA NASA]/[http://en.wikipedia.org/wiki/JPL JPL]-[[:e |
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当前 | 2008年12月25日 (四) 04:58 | 8,193 × 2,410(21.19 MB) | BetacommandBot(留言 | 贡献) | move approved by: User:Noodle snacks This image was moved from File:Andromeda galaxy Ssc2005-20a1 halfsize.jpg == Summary == {{es|Imagen de la galaxia de Andrómeda en Infrarrojo.}} Andromeda Galaxy (M31) 2.5 [[:en:light |
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水平分辨率 | 300 dpi |
垂直分辨率 | 300 dpi |
使用软件 | Adobe Photoshop CS2 Macintosh |
文件修改日期时间 | 2005年10月13日 (四) 10:11 |
色彩空间 | 无标定 |