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Fayl:NGC 201 HST 10787 21 R814G606B435.png

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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
.
Sanasi
Manba http://www.spacetelescope.org/images/potw1426a/
Muallif

ESA/Hubble & NASA

Acknowledgement: Luca Limatola
Other versions Uncroped, JPG:

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This file is licensed under the Creative Commons Attribution 4.0 International license.
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  • atribut – Siz tegishli litsenziyaga havolani taqdim etishingiz va oʻzgartirishlar kiritilganligini koʻrsatishingiz kerak. Siz buni har qanday oqilona yoʻl bilan qilishingiz mumkin, lekin litsenziar Sizni yoki Sizning foydalanishingizni ma'qullashini taklif qiladigan tarzda emas.

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30 iyun 2014

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