NGC 6240: Difference between revisions
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NGC 6240 was incorrectly identified as NGC 6420 |
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The '''Starfish Galaxy''' (also known as '''''NGC |
The '''Starfish Galaxy''' (also known as '''''NGC 6240''''') is an [[irregular galaxy]] approximately 400 million [[light-year]]s from Earth, in the [[Ophiuchus]] [[constellation]]. |
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It differs from other galaxies in having two nuclei |
It differs from other galaxies in having two nuclei. Astronomers generally believe that a galaxy with two nuclei is formed when two smaller galaxies [[interacting galaxy|collide and merge]]. The ''Starfish Galaxy'' has often been described as a "twisted, distorted galaxy with a looping arch". Some astronomers believe that it contains two [[black hole]]s. |
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The Starfish Galaxy was first observed in detail with the [[IRAS]] satellite. This galaxy can been seen from [[Earth]] with a large [[telescope]].{{clear}} |
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== Other images == |
== Other images == |
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<gallery> |
<gallery> |
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Image:Ngc6240 chandra.jpg| |
Image:Ngc6240 chandra.jpg|Some scientists speculate that this picture shows two supermassive black holes. |
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Image:Ngc6240 roentgen.jpg| |
Image:Ngc6240 roentgen.jpg|NGC 6240 is sometimes called the starfish or butterfly galaxy because of its shape. |
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== External links == |
== External links == |
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* [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=NGC+6240&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2006&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0 '''SIMBAD''': NGC 6240 -- LINER-type Active Galaxy Nucleus] |
* [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=NGC+6240&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2006&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0 '''SIMBAD''': NGC 6240 -- LINER-type Active Galaxy Nucleus] |
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* [http://chandra.harvard.edu/photo/2002/0192/ '''Chandra''': Two |
* [http://chandra.harvard.edu/photo/2002/0192/ '''Chandra''': Two supermassive black holes in same galaxy.] |
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Revision as of 21:12, 19 April 2006
The Starfish Galaxy (also known as NGC 6240) is an irregular galaxy approximately 400 million light-years from Earth, in the Ophiuchus constellation.
It differs from other galaxies in having two nuclei. Astronomers generally believe that a galaxy with two nuclei is formed when two smaller galaxies collide and merge. The Starfish Galaxy has often been described as a "twisted, distorted galaxy with a looping arch". Some astronomers believe that it contains two black holes.
The Starfish Galaxy was first observed in detail with the IRAS satellite. This galaxy can been seen from Earth with a large telescope.
Other images
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
Wikimedia Commons has media related to NGC 6240.
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Some scientists speculate that this picture shows two supermassive black holes.
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NGC 6240 is sometimes called the starfish or butterfly galaxy because of its shape.
See also
External links
- SIMBAD: NGC 6240 -- LINER-type Active Galaxy Nucleus
- Chandra: Two supermassive black holes in same galaxy.