Image:Hubble Interacting Galaxy NGC 6621 (2008-04-24).jpg

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Description

NGC 6621/2 (VV 247, Arp 81) is a strongly interacting pair of galaxies, seen about 100 million years after their closest approach. It consists of NGC 6621 (to the left) and NGC 6622 (to the right). NGC 6621 is the larger of the two, and is a very disturbed spiral galaxy. The encounter has pulled a long tail out of NGC 6621 that has now wrapped behind its body. The collision has also triggered extensive star formation between the two galaxies. Scientists believe that Arp 81 has a richer collection of young massive star clusters than the notable Antennae galaxies (which are much closer than Arp 81). The pair is located in the constellation of Draco, approximately 300 million light-years away from Earth. Arp 81 is the 81st galaxy in Arp's Atlas of Peculiar Galaxies.

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 6621, NGC 6622, VV 247, Arp 81, VII Zw 778, KPG 534A
Object description: Interacting Galaxies
Position (J2000): 18 12 54.70
+68 21 49.0
Constellation: Draco
Distance: 300 million light-years (100 million parsecs)
About the data
Data description: The Hubble image was created using HST data from proposal 7467: W. Keel (University of Alabama, Tuscaloosa)
Instrument: WFPC2
Exposure date(s): March 15, 1999
Exposure time: 1.4 hours
Filters: F435W (B) and F814W (I)
Source

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

2008-04-24
Author

NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and W. Keel (University of Alabama, Tuscaloosa)
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
current21:03, 27 April 20083,038×1,580 (3.99 MB)White Cat ({{Information |Description=NGC 6621/2 (VV 247, Arp 81) is a strongly interacting pair of galaxies, seen about 100 million years after their closest approach. It consists of NGC 6621 (to the left) and NGC 6622 (to the right). NGC 6621 is the larger of the )
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