Image:Hubble Interacting Galaxy NGC 520 (2008-04-24).jpg

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Description

NGC 520 is the product of a collision between two disk galaxies that started 300 million years ago. It exemplifies the middle stages of the merging process: the disks of the parent galaxies have merged together, but the nuclei have not yet coalesced. It features an odd-looking tail of stars and a prominent dust lane that runs diagonally across the center of the image and obscures the galaxy. NGC 520 is one of the brightest galaxy pairs on the sky, and can be observed with a small telescope toward the constellation of Pisces, the Fish, having the appearance of a comet. It is about 100 million light-years away and about 100,000 light-years across. The galaxy pair is included in Arp's catalog of peculiar galaxies as Arp 157.

This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.

Technical facts about this image
About the object
Object name: NGC 520, Arp 157, VV 231, KPG 031
Object description: Interacting Galaxies
Position (J2000): 01 24 35.42
+03 47 55.0
Constellation: Pisces
Distance: 100 million light-years (50 million parsecs)
About the data
Data description: The Hubble image was created using HST data from proposal 9735: B. Whitmore (STScI)
Instrument: ACS/WFC
Exposure date(s): October 22, 2004
Exposure time: 77 minutes
Filters: F435W (B), F555W (V), and F814W (I)
Source

http://hubblesite.org/newscenter/archive/releases/2008/16/image/bo/ (direct link)
Date

2008-04-24
Author

NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and B. Whitmore (STScI)
Permission
(Reusing this image)
Public domain
 This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).

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Date/TimeDimensionsUserComment
current18:34, 27 April 20083,271×1,828 (6.47 MB)White Cat ({{Information |Description=NGC 520 is the product of a collision between two disk galaxies that started 300 million years ago. It exemplifies the middle stages of the merging process: the disks of the parent galaxies have merged together, but the nuclei h)
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