Astronomy:Abell 1689

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Short description: Large galaxy cluster in the constellation Virgo
Abell 1689
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]

  • Yellow galaxies belong to the cluster itself. Red and blue are background galaxies gravitationally lensed.
    Yellow galaxies belong to the cluster itself. Red and blue are background galaxies gravitationally lensed.
  • Mass map of Abell 1689.
    Mass map of Abell 1689.
  • Globular clusters in 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. 

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



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