SPT-CL J2106-5844 explained

SPT-CLJ2106-5844 is a galaxy cluster located 7.5 billion light years from Earth. It was discovered by scientists from the South Pole Telescope Collaboration, using the South Pole Telescope. With a weight of about 1.27 Ă— 1015 solar masses, it is the most massive distant object known, as of 2011. It is about 60% heavier than previously known object detected in 2008, SPT-CL J0546-5345.[1] [2]

This galaxy cluster was found in the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey. This survey was done using the Advanced Camera for Surveys and Wide Field Camera 3 on the Hubble Space Telescope. There have been many observations completed in x-ray and infrared imaging to discover new observations about this massive cluster. Like how the central dump is resolved into two different substructures -northwestern and southeastern- which are separated by a distance of ~150 kpc. This distance is immense, considering the distance from Earth to the Galactic Center is only 7-10 kpc. To put this in perspective, the Milky Way galaxy could fit 20 times between these two substructures, the actual diameter of 'SPT-CLJ2106' is much bigger than just this gap[3]

The cluster has a redshift of z=1.132.[4]

Notes and References

  1. Web site: Antarctica Telescope Finds Most Massive Distant Object -1000 Times Mass of Milky Way. The Daily Galaxy. 2011-04-12. 2011-04-12.
  2. 4. Foley, R. J.. Andersson, K.. Bazin, G.. de Haan, T.. Ruel, J.. Ade, P. A. R.. Aird, K. A.. Armstrong, R.. Ashby, M. L. N.. Bautz, M.. Benson, B. A.. Bleem, L. E.. Bonamente, M.. Brodwin, M.. Carlstrom, J. E.. Chang, C. L.. Clocchiatti, A.. Crawford, T. M.. Crites, A. T.. Desai, S.. Dobbs, M. A.. Dudley, J. P.. Fazio, G. G.. Forman, W. R.. Garmire, G.. George, E. M.. Gladders, M. D.. Gonzalez, A. H.. Halverson, N. W.. High, F. W.. Holder, G. P.. Holzapfel, W. L.. Hoover, S.. Hrubes, J. D.. Jones, C.. Joy, M.. Keisler, R.. Knox, L.. Lee, A. T.. Leitch, E. M.. Lueker, M.. Luong-Van, D.. Marrone, D. P.. McMahon, J. J.. Mehl, J.. Meyer, S. S.. Mohr, J. J.. Montroy, T. E.. Murray, S. S.. Padin, S.. Plagge, T.. Pryke, C.. Reichardt, C. L.. Rest, A.. Ruhl, J. E.. Saliwanchik, B. R.. Saro, A.. Schaffer, K. K.. Shaw, L.. Shirokoff, E.. Song, J.. Spieler, H. G.. Stalder, B.. Stanford, S. A.. Staniszewski, Z.. Stark, A. A.. Story, K.. Stubbs, C. W.. Vanderlinde, K.. Vieira, J. D.. Vikhlinin, A.. Williamson, R.. Zenteno, A.. DISCOVERY AND COSMOLOGICAL IMPLICATIONS OF SPT-CL J2106-5844, THE MOST MASSIVE KNOWN CLUSTER AT z>1. The Astrophysical Journal. 20 April 2011. 731. 2. 86. 10.1088/0004-637X/731/2/86. 2011ApJ...731...86F . 1101.1286 . 119297916.
  3. Precise Mass Determination of SPT-CL J2106-5844, the Most Massive Cluster at z>1. Cornell University. 2019-10-10. 10.3847/1538-4357/ab521e. 1910.04775. Kim. Jinhyub. Jee. M. James. Perlmutter. Saul. Hayden. Brian. Rubin. David. Huang. Xiaosheng. Aldering. Greg. Ko. Jongwan. The Astrophysical Journal. 887. 1. 76. 2019ApJ...887...76K. 204401763 . free .
  4. Web site: Reichardt. Christian. SPT SZ Observations. Planck conference. 2011-04-16. 2011-01-11.

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