Stephan's Quintet [SEP] constellation
Stephan's Quintet
Stephan's Quintet is a visual grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group, visible in the constellation Pegasus, was discovered by Édouard Stephan in 1877 at the Marseille Observatory.
The group is the most studied of all the compact galaxy groups. The brightest member of the visual grouping is NGC 7320 that is shown to have extensive H II regions, identified as red blobs, where active star formation is occurring.
Description.
Four of the
Born in the Wreckage of Cosmic Collisions
- News Release at ESA/Hubble
- Stephan's Quintet
- NightSkyInfo.com : Stephan's Quintet
- What's Behind Stephan's Quintet? Peter Edmonds, Chandra Blog, 21 July 2009
- Astronomy Picture of the Day on Stephan's Quintet: 13 Nov 2000   12 Aug 2003   11 Sep 2009