Astronomy:Abell 1689

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Short description: Large galaxy cluster in the constellation Virgo
Abell 1689
New Hubble view of galaxy cluster Abell 1689.jpg
Hubble view of galaxy cluster Abell 1689. It combines both visible and infrared data, with a combined exposure time of over 34 hours.[1]
Observation data (Epoch J2000)
Constellation(s)Virgo
Right ascension 13h 11m 34.2s[2]
Declination−01° 21′ 56″
Richness class4[3]
Bautz–Morgan classificationII-III[3]
Redshift0.1832[2]
Distance
(co-moving)		754 Mpc (2,459 Mly) h−10.705[2]
X-ray flux(14.729 ± 8.1%)×10−11 erg s−1 cm−2 (0.1–2.4 keV)[2]
See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

Abell 1689 is a galaxy cluster in the constellation Virgo over 2.3 billion light-years away.

Details

Abell 1689 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.[4] It has the largest system of gravitational arcs ever found.[5]

Abell 1689 shows over 160,000 globular clusters, the largest population ever found.[6]

There is evidence of merging and gases in excess of 100 million degrees.[5] The very large mass of this cluster makes it useful for the study of dark matter and gravitational lensing.[7][8]

At the time of its discovery in 2008, one of the lensed galaxies, A1689-zD1, was the most distant galaxy found.[9][10]

Gallery

  • Yellow galaxies belong to the cluster itself. Red and blue are background galaxies gravitationally lensed.

  • Mass map of Abell 1689.

  • Globular clusters in Abell 1689

See also

References

  1. ↑ "New Hubble image of galaxy cluster Abell 1689". ESA/Hubble Press Release. http://www.spacetelescope.org/news/heic1317/. 
  2. ↑ 2.0 2.1 2.2 2.3 "NASA/IPAC Extragalactic Database". Results for Abell 1689. http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=Abell+1689&extend=no. Retrieved 2012-03-17. 
  3. ↑ 3.0 3.1 Abell, George O.; Corwin, Harold G. Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies". Astrophysical Journal Supplement Series 70 (May 1989): 1–138. doi:10.1086/191333. ISSN 0067-0049. Bibcode: 1989ApJS...70....1A. 
  4. ↑ Falcon-Lang, Howard (19 August 2010). "Fate of Universe revealed by galactic lens". BBC News. BBC. https://www.bbc.co.uk/news/science-environment-11030889. 
  5. ↑ 5.0 5.1 "Purple Haze, Part Deux". NASA. 12 September 2008. http://www.nasa.gov/multimedia/imagegallery/Image_feature_1172.html. 
  6. ↑ "Globular clusters within Abell 1689". HUBBLE/ESA. 12 September 2013. http://www.spacetelescope.org/images/heic1317b/. 
  7. ↑ "Detailed Dark Matter Map Yields Clues to Galaxy Cluster Growth". NASA. 11 December 2010. http://www.nasa.gov/mission_pages/hubble/science/dark-matter-map.html. 
  8. ↑ Diego, Jose M.; Broadhurst, T.; Benitez, N.; Umetsu, K.; Coe, D.; Sendra, I. et al. (2014). "A Free-Form Lensing Grid Solution for A1689 with New Multiple Images". MNRAS 446 (1): 683–704. doi:10.1093/mnras/stu2064. Bibcode: 2015MNRAS.446..683D. 
  9. ↑ "Astronomers Eye Ultra-Young, Bright Galaxy in Early Universe". NASA. 2008-02-12. http://www.nasa.gov/centers/jpl/news/Spitzer20080212.html. 
  10. ↑ "Astronomers Uncover One of the Youngest and Brightest Galaxies in the Early Universe". Space Telescope Science Institute Baltimore, Md. / nasa.gov. 2008-02-12. http://www.nasa.gov/mission_pages/hubble/science/young_bright.html. 

External links

Coordinates: Sky map 13h 11m 34.2s, −01° 21′ 56″



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