File:NGC3254 - HST - Potw2124a.jpg
![File:NGC3254 - HST - Potw2124a.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/7/70/NGC3254_-_HST_-_Potw2124a.jpg/709px-NGC3254_-_HST_-_Potw2124a.jpg?20210616041729)
原始文件 (3,644 × 3,081像素,文件大小:5.55 MB,MIME类型:image/jpeg)
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摘要
[编辑]描述NGC3254 - HST - Potw2124a.jpg |
English: A Galactic Powerhouse
This image shows the spiral galaxy NGC 3254, observed using Hubble's Wide Field Camera 3 (WFC3). WFC3 has the capacity to observe ultraviolet, visible and near-infrared light, and this image is a composite of observations taken in the visible and infrared. In this image, NGC 3254 looks like a typical spiral galaxy, viewed side-on. However, NGC 3254 has a fascinating secret that it is hiding in plain sight — it is a Seyfert galaxy, meaning that it has an extraordinarily active core, known as an active galactic nucleus, which releases as much energy as the rest of the galaxy put together. Seyfert galaxies are not rare — about 10% of all galaxies are thought to be Seyfert galaxies. They belong to the class of “active galaxies” — galaxies that have supermassive black holes at their centres that are actively accreting material, which releases vast amounts of radiation as it is accreted. There is a second, far more active, type of active galaxy that is known as a quasar. The active cores of Seyfert galaxies, such as NGC 3254, are brightest when observed in light outside the visible spectrum. At other wavelengths, this image would look very different, with the galaxy’s core shining extremely brightly. Credit: ESA/Hubble & NASA, A. Riess et al.
Coordinates Position (RA): 10 29 23.83 Position (Dec): 29° 30' 6.70" Field of view: 2.41 x 2.03 arcminutes Orientation: North is 7.3° left of vertical Colours & filters Band Wavelength Telescope Optical Long pass 350 nm Hubble Space Telescope WFC3 Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Infrared H 1.6 μm Hubble Space Telescope WFC3. |
日期 | 14 June 2021, 06:00(Release) |
来源 | https://esahubble.org/images/potw2124a/ |
作者 |
Credit: ESA/Hubble & NASA, A. Riess et al. |
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当前 | 2021年6月16日 (三) 04:17 | ![]() | 3,644 × 3,081(5.55 MB) | Fabian RRRR(留言 | 贡献) | == {{int:filedesc}} == {{Information |description={{en|1=A Galactic Powerhouse This image shows the spiral galaxy NGC 3254, observed using Hubble's Wide Field Camera 3 (WFC3). WFC3 has the capacity to observe ultraviolet, visible and near-infrared light, and this image is a composite of observations taken in the visible and infrared. In this image, NGC 3254 looks like a typical spiral galaxy, viewed side-on. However, NGC 3254 has a fascinating secret that it is hiding in plain sight — it is... |
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来源 | ESA/Hubble |
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提供者 | ESA/Hubble & NASA, A. Riess et al. |
简短标题 |
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图像标题 |
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使用条款 |
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数据生成日期时间 | 2021年6月14日 (一) 06:00 |
使用软件 | Adobe Photoshop 22.3 (Windows) |
文件修改日期时间 | 2021年5月14日 (五) 10:27 |
数字化日期时间 | 2021年4月26日 (一) 12:17 |
元数据最后修改日期 | 2021年5月14日 (五) 12:27 |
原始文件唯一ID | xmp.did:2d647ea3-30de-8242-aa07-6b10bc85499d |
关键词 | NGC 3254 |
联系信息 |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM版本 | 4 |