File:UGC 12158.jpg
![File:UGC 12158.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b3/UGC_12158.jpg/697px-UGC_12158.jpg?20101220143901)
原始文件 (2,790 × 2,400像素,文件大小:3.94 MB,MIME类型:image/jpeg)
说明
说明
摘要
[编辑]描述UGC 12158.jpg |
English: The galaxy captured in this image, called UGC 12158, certainly isn’t camera-shy: this spiral stunner is posing face-on to the NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys, revealing its structure in fine detail.
UGC 12158 is an excellent example of a barred spiral galaxy in the Hubble sequence — a scheme used to categorise galaxies based on their shapes. Barred spirals, as the name suggest, feature spectacular swirling arms of stars that emanate from a bar-shaped centre. Such bar structures are common, being found in about two thirds of spiral galaxies, and are thought to act as funnels, guiding gas to their galactic centres where it accumulates to form newborn stars. These aren’t permanent structures: astronomers think that they slowly disperse over time, so that the galaxies eventually evolve into regular spirals. The appearance of a galaxy changes little over millions of years, but this image also contains a short-lived and brilliant interloper — the bright blue star just to the lower left of the centre of the galaxy is very different from the several foreground stars seen in the image. It is in fact a supernova inside UGC 12158 and much further away than the Milky Way stars in the field — at a distance of about 400 million light-years! This stellar explosion, called SN 2004ef, was first spotted by two British amateur astronomers in September 2004 and the Hubble data shown here form part of the follow-up observations. This picture was created from images taken with the Wide Field Channel of Hubble’s Advanced Camera for Surveys. Images through blue (F475W, coloured blue), yellow (F606W, coloured green) and red (F814W, coloured red) as well as a filter that isolates the light from glowing hydrogen (F658W, also coloured red) have been included. The exposure times were 1160 s, 700 s, 700 s and 1200 s respectively. The field of view is about 2.3 arcminutes across. |
||||
日期 | |||||
来源 | http://www.spacetelescope.org/images/potw1035a/ | ||||
作者 | ESA/Hubble & NASA | ||||
授权 (二次使用本文件) |
|
许可协议
[编辑]![w:zh:知识共享](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![署名](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
- 您可以自由地:
- 共享 – 复制、发行并传播本作品
- 修改 – 改编作品
- 惟须遵守下列条件:
- 署名 – 您必须对作品进行署名,提供授权条款的链接,并说明是否对原始内容进行了更改。您可以用任何合理的方式来署名,但不得以任何方式表明许可人认可您或您的使用。
文件历史
点击某个日期/时间查看对应时刻的文件。
日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
---|---|---|---|---|---|
当前 | 2010年12月20日 (一) 14:39 | ![]() | 2,790 × 2,400(3.94 MB) | Jmencisom(留言 | 贡献) | {{Information |Description={{en|1=The galaxy captured in this image, called UGC 12158, certainly isn’t camera-shy: this spiral stunner is posing face-on to the NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys, revealing its structure in f |
您不可以覆盖此文件。
文件用途
以下页面使用本文件:
全域文件用途
以下其他wiki使用此文件:
- af.wikipedia.org上的用途
- ar.wikipedia.org上的用途
- azb.wikipedia.org上的用途
- bn.wikipedia.org上的用途
- bs.wikipedia.org上的用途
- ca.wikipedia.org上的用途
- cs.wikipedia.org上的用途
- cy.wikipedia.org上的用途
- de.wikipedia.org上的用途
- en.wikipedia.org上的用途
- en.wikiquote.org上的用途
- es.wikipedia.org上的用途
- fr.wikipedia.org上的用途
- ga.wikipedia.org上的用途
- hr.wikipedia.org上的用途
- hy.wikipedia.org上的用途
- it.wikipedia.org上的用途
- km.wikipedia.org上的用途
- ko.wikipedia.org上的用途
- la.wikipedia.org上的用途
- mk.wikipedia.org上的用途
- nl.wikipedia.org上的用途
- pl.wikipedia.org上的用途
- ro.wikipedia.org上的用途
- sk.wikipedia.org上的用途
- tr.wikipedia.org上的用途
- vi.wikipedia.org上的用途
- www.wikidata.org上的用途
- zh-yue.wikipedia.org上的用途
- zh.wikipedia.org上的用途
元数据
此文件含有额外信息,这些信息可能是创建或数字化该文件时使用的数码相机或扫描仪所添加的。如果文件已从其原始状态修改,某些详细信息可能无法完全反映修改后的文件。
_error | 0 |
---|