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Sažetak
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English: Discovered by astronomer William Herschel in the late 1700s, NGC 201 is a barred spiral galaxy similar to our own galaxy, the Milky Way. It lies 200 million light-years from Earth in the constellation of Cetus (The Sea Monster), and is invisible to the naked eye.
This new NASA/ESA Hubble Space Telescope image of NGC 201 shows the galaxy in striking detail, capturing the bright centre and the barred spiral arms — arms that do not start directly from the galactic centre, but instead seem to be offset and stem from a "bar" of stars cutting through the middle of the galaxy. Along with three of its closest galactic neighbours (outside the frame), NGC 201 belongs to a group known as the HCG 7 compact galactic group. Hickson Compact Groups (HCG) are relatively small and isolated systems containing a handful of bright, compact galaxies that lie close to one another. As the galaxies within these groups move closer together they interact strongly, dragging galactic material out into space and distorting the structure of the other group members. Eventually, all the galaxies within one HCG will merge together. Simulations have shown that within a billion years, the galaxies within one HCG have merged to form a giant fossil galaxy. It is possible that this is the final fate of all galactic groups. A version of this image was submitted to the Hubble's Hidden Treasures image processing competition by contestant Luca Limatola. About the Object
Name: HCG 7, NGC 201
Type: • Local Universe : Galaxy : Type : Spiral
• Local Universe : Galaxy : Type : Barred
• Local Universe : Galaxy : Grouping : Multiple
• X - Galaxies Images/Videos
Distance: 200 million light years
Colours & filters Band Wavelength Telescope Optical B 435 nm Hubble Space Telescope ACS Optical V 606 nm Hubble Space Telescope ACS Infrared I 814 nm Hubble Space Telescope ACS. |
| Datum | |
| Izvor | http://www.spacetelescope.org/images/potw1426a/ |
| Autor |
ESA/Hubble & NASA Acknowledgement: Luca Limatola |
| Ostale inačice |
Uncroped, JPG:  |
Licencija
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ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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| Datum/Vrijeme | Minijatura | Dimenzije | Suradnik | Komentar | |
|---|---|---|---|---|---|
| sadašnja | 18:56, 9. kolovoz 2014. | | 1.906 × 2.808 (10,65 MB) | wikimediacommons>Fabian RRRR | Better Quality |
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