|Observation data (Epoch J2000)|
|Right ascension||13h 11m 34.2s|
|Declination||−01° 21′ 56″|
|754 Mpc (2,459 Mly) h−1
|X-ray flux||(14.729 ± 8.1%)×10−11 erg s-1 cm-2 (0.1—2.4 keV)|
|See also: Galaxy groups, Galaxy clusters, List of galaxy clusters|
Abell 1689 is a galaxy cluster in the constellation Virgo nearly 2.2 billion light years away. It is one of the biggest and most massive galaxy clusters known and acts as a gravitational lens, distorting the images of galaxies that lie behind it. It has the largest system of gravitational arcs ever found.
There is evidence of merging and gases in excess of 100 million degrees. The massive gravitational nature of this system has been used to study dark matter and the effects of gravitational lensing.
Yellow galaxies belong to the cluster itself. Red and blue are background galaxies gravitationally lensed.
- "New Hubble image of galaxy cluster Abell 1689". ESA/Hubble Press Release. Retrieved 14 September 2013.
- "NASA/IPAC Extragalactic Database". Results for Abell 1689. Retrieved 2012-03-17.
- Abell, George O.; Corwin, Harold G., Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies" (PDF). Astrophysical Journal Supplement Series 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. doi:10.1086/191333. ISSN 0067-0049. Retrieved March 12, 2012.
- Falcon-Lang, Howard (19 August 2010). "Fate of Universe revealed by galactic lens". BBC News. BBC. Archived from the original on 19 August 2010. Retrieved 19 August 2010.
- "Purple Haze, Part Deux". NASA. 12 September 2008. Retrieved 19 September 2012.
- "Globular clusters within Abell 1689". HUBBLE/ESA. 12 September 2013. Retrieved 19 September 2013.
- "Detailed Dark Matter Map Yields Clues to Galaxy Cluster Growth". NASA. 11 December 2010. Retrieved 19 September 2012.
- "Astronomers Eye Ultra-Young, Bright Galaxy in Early Universe". nasa.gov. 2008-02-12. Retrieved 2008-02-25.
- "Astronomers Uncover One of the Youngest and Brightest Galaxies in the Early Universe". Space Telescope Science Institute Baltimore, Md. / nasa.gov. 2008-02-12. Archived from the original on 17 February 2008. Retrieved 2008-02-25.
|Wikimedia Commons has media related to Abell 1689.|
- Galaxy cluster Abell 1689: Biggest 'Zoom Lens' in Space Takes Hubble Deeper into the Universe (HubbleSite)
- Galaxy cluster Abell 1689: Astronomers Find One of the Youngest and Brightest Galaxies in the Early Universe (HubbleSite)
- Astronomers take a step towards revealing the Universe's biggest mystery, ESA/Hubble Press Release.
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