File:Gravitational lensing by galaxy in cluster IRC 0218, annotated.jpg
![File:Gravitational lensing by galaxy in cluster IRC 0218, annotated.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/0/06/Gravitational_lensing_by_galaxy_in_cluster_IRC_0218%2C_annotated.jpg/750px-Gravitational_lensing_by_galaxy_in_cluster_IRC_0218%2C_annotated.jpg?20140805020235)
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Summary
[edit]DescriptionGravitational lensing by galaxy in cluster IRC 0218, annotated.jpg |
English: These NASA/ESA Hubble Space Telescope images reveal the most distant cosmic lens yet found, a massive elliptical galaxy whose powerful gravity is magnifying the light from a faraway galaxy behind it.
The giant elliptical is the red object in the small white square. The galaxy is seen as it appeared 9.6 billion years ago and is one of the brightest members in a distant cluster of galaxies, called IRC 0218. The background image shows the entire region surrounding the galaxy. In the enlarged view on the left, the lighter-coloured blobs in the upper right and lower left are the distorted and magnified shapes of a more distant spiral galaxy behind the foreground elliptical. The giant elliptical is so massive that its enormous gravitational field deflects light passing through it, much as an optical lens bends light to form an image. This phenomenon, called gravitational lensing, magnifies, brightens, and distorts images from faraway objects that might otherwise be too faint to observe even with the largest telescopes. Astronomers needed spectroscopy to determine that the blobby features were two images of the same distant galaxy. In the enlarged view on the right, astronomers have subtracted the image of the giant red elliptical to show the more distant spiral galaxy. The glow of young stars makes the galaxy appear blue. The white area at upper right is probably a region of star formation. The images were made by combining visible-light observations from the Advanced Camera for Surveys and near-infrared exposures from the Wide Field Camera 3. |
Date | |
Source | http://spacetelescope.org/images/opo1433a/ |
Author | NASA, ESA, K.-V. Tran (Texas A&M University), and K. Wong (Academia Sinica Institute of Astronomy & Astrophysics) |
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Credit/Provider | NASA, ESA, K.-V. Tran (Texas A&M University), and K. Wong (Academia Sinica Institute of Astronomy & Astrophysics) |
Source | ESA/Hubble |
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Date and time of data generation | 09:12, 4 August 2014 |
Software used | Adobe Photoshop CS6 (Macintosh) |
Unique ID of original document | xmp.did:60EBE832B52568118083C69F9C229265 |
Keywords | IRC 0218 |
Contact information |
http://www.spacetelescope.org/ Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
IIM version | 4 |