File:Radio galaxy Centaurus A by ALMA.jpg
![File:Radio galaxy Centaurus A by ALMA.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b6/Radio_galaxy_Centaurus_A_by_ALMA.jpg/600px-Radio_galaxy_Centaurus_A_by_ALMA.jpg?20190810071932)
原始文件 (1,225 × 1,225像素,文件大小:287 KB,MIME类型:image/jpeg)
说明
说明
摘要
[编辑]描述Radio galaxy Centaurus A by ALMA.jpg |
English: This new image of Centaurus A combines ALMA and near-infrared observations of the massive elliptical radio galaxy. The new ALMA observations, shown in a range of green, yellow and orange colours, reveal the position and motion of the clouds of gas in the galaxy. They are the sharpest and most sensitive such observations ever made.
ALMA was tuned to detect signals with a wavelength around 1.3 millimetres, emitted by molecules of carbon monoxide gas. The motion of the gas in the galaxy causes slight changes to this wavelength, due to the Doppler effect. The motion is shown in this image as changes in colour. Greener features trace gas coming towards us while more orange features depict gas moving away. We can see that the gas to the left of the centre is moving towards us, while the gas to the right of the centre is moving away from us, indicating that the gas is orbiting around the galaxy. The ALMA observations are overlaid on a near-infrared image of Centaurus A obtained with the SOFI instrument attached to the ESO New Technology Telescope (NTT). |
日期 | |
来源 | http://www.eso.org/public/images/eso1222a/ |
作者 | ALMA (ESO/NAOJ/NRAO); ESO/Y. Beletsky |
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 | 2019年8月10日 (六) 07:19 | ![]() | 1,225 × 1,225(287 KB) | BevinKacon(留言 | 贡献) | actual size from ESO original source |
2012年6月4日 (一) 14:26 | ![]() | 1,280 × 1,280(214 KB) | Jmencisom(留言 | 贡献) |
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:
- cs.wikipedia.org上的用途
- de.wikipedia.org上的用途
- en.wikipedia.org上的用途
- fr.wikipedia.org上的用途
- gl.wikipedia.org上的用途
- my.wikipedia.org上的用途
- pnb.wikipedia.org上的用途
- ur.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。
JPEG文件备注 | This new image of Centaurus A combines ALMA and near-infrared observations of the massive elliptical radio galaxy. The new ALMA observations, shown in a range of green, yellow and orange colours, reveal the position and motion of the clouds of gas in the galaxy. They are the sharpest and most sensitive such observations ever made. ALMA was tuned to detect signals with a wavelength around 1.3 millimetres, emitted by molecules of carbon monoxide gas. The motion of the gas in the galaxy causes slight changes to this wavelength, due to the Doppler effect. The motion is shown in this image as changes in colour. Greener features trace gas coming towards us while more orange features depict gas moving away. We can see that the gas to the left of the centre is moving towards us, while the gas to the right of the centre is moving away from us, indicating that the gas is orbiting around the galaxy. The ALMA observations are overlaid on a near-infrared image of Centaurus A obtained with the SOFI instrument attached to the ESO New Technology Telescope (NTT). |
---|