Abell 1689

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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 class 4 [3]
Bautz–Morgan classification II-III [3]
Redshift 0.1832 [2]
Distance 754  Mpc (2,459  Mly) h−1
0.705 [2]
X-ray flux (14.729 ± 8.1%)×10−11 erg s−1 cm−2 (0.1–2.4 keV) [2]

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

Contents

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]

See also

References

  1. ↑ "New Hubble image of galaxy cluster Abell 1689". ESA/Hubble Press Release. Retrieved 14 September 2013.
  2. 1 2 3 4 "NASA/IPAC Extragalactic Database". Results for Abell 1689. Retrieved 2012-03-17.
  3. 1 2 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. Bibcode:1989ApJS...70....1A. doi: 10.1086/191333 . ISSN   0067-0049.
  4. ↑ 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.
  5. 1 2 "Purple Haze, Part Deux". NASA. 12 September 2008. Retrieved 19 September 2012.
  6. ↑ "Globular clusters within Abell 1689". HUBBLE/ESA. 12 September 2013. Retrieved 19 September 2013.
  7. ↑ "Detailed Dark Matter Map Yields Clues to Galaxy Cluster Growth". NASA. 11 December 2010. Retrieved 19 September 2012.
  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. arXiv: 1402.4170 . Bibcode:2015MNRAS.446..683D. doi: 10.1093/mnras/stu2064 .
  9. ↑ "Astronomers Eye Ultra-Young, Bright Galaxy in Early Universe". NASA. 2008-02-12. Archived from the original on 2016-03-18. Retrieved 2008-02-25.
  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. Archived from the original on 17 February 2008. Retrieved 2008-02-25.
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