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Datei:Potw1504a.tif

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Beschreibung

Beschreibung
English: he polar ring of Arp 230

This Picture of the Week shows Arp 230, also known as IC 51, observed by the NASA/ESA Hubble Space Telescope.

Arp 230 is a galaxy of an uncommon or peculiar shape, and is therefore part of the Atlas of Peculiar Galaxies produced by Halton Arp. Its irregular shape is thought to be the result of a violent collision with another galaxy sometime in the past. The collision could also be held responsible for the formation of the galaxy’s polar ring.

The outer ring surrounding the galaxy consists of gas and stars and rotates over the poles of the galaxy. It is thought that the orbit of the smaller of the two galaxies that created Arp 230 was perpendicular to the disc of the second, larger galaxy when they collided. In the process of merging the smaller galaxy would have been ripped apart and may have formed the polar ring structure astronomers can observe today.

Arp 230 is quite small for a lenticular galaxy, so the two original galaxies forming it must both have been smaller than the Milky Way.

A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by flickr user Det58. Links 

   Atlas of Peculiar Galaxies

Credit:

Credit: ESA/Hubble & NASA Acknowledgement: Flickr user Det58


About the Object 

Name:	Arp 230, IC 51
Type:	• Milky Way : Galaxy : Type : Lenticular
• X - Galaxies Images/Videos
Distance:	60 million light years
Constellation:	Cetus



Colours & filters Band	Wavelength Telescope
Infrared I 	814 nm 	Hubble Space Telescope WFPC2
Optical R 	675 nm 	Hubble Space Telescope WFPC2
Optical V 	555 nm 	Hubble Space Telescope WFPC2
Ultraviolet U 	336 nm 	Hubble Space Telescope WFPC2
.
Datum
Quelle http://www.spacetelescope.org/images/potw1504a/ http://www.spacetelescope.org/static/archives/images/original/potw1504a.tif
Urheber

Credit: ESA/Hubble & NASA

Acknowledgement: Flickr user Det58

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Version vomVorschaubildMaßeBenutzerKommentar
aktuell13:42, 31. Jan. 2015Vorschaubild der Version vom 13:42, 31. Jan. 20151.097 × 849, 2 Seiten (6,53 MB)Fabian RRRR=={{int:filedesc}}== {{Information |description={{en|1=''he polar ring of Arp 230 This Picture of the Week shows Arp 230, also known as IC 51, observed by the NASA/ESA Hubble Space Telescope. Arp 230 is a galaxy of an uncommon or peculiar shape, and...

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