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  Observation of a Very Massive Galaxy Cluster at z=0.76 in the SRG/eROSITA All-Sky Survey

Burenin, R. A., Bikmaev, I. F., Gilfanov, M. R., Grokhovskaya, A. A., Dodonov, S. N., Eselevich, M. V., et al. (2021). Observation of a Very Massive Galaxy Cluster at z=0.76 in the SRG/eROSITA All-Sky Survey. Astronomy Letters - a Journal of Astronomy and Space Astrophysics, 47(7), 443-453. doi:10.1134/S1063773721070045.

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Burenin, R. A., Author
Bikmaev, I. F., Author
Gilfanov, M. R.1, Author              
Grokhovskaya, A. A., Author
Dodonov, S. N., Author
Eselevich, M. V., Author
Zaznobin, I. A., Author
Irtuganov, E. N., Author
Lyskova, N. S., Author
Medvedev, P. S., Author
Meshcheryakov, A. V., Author
Moiseev, A. V., Author
Sazonov, S. Yu., Author
Starobinsky, A. A., Author
Sunyaev, R. A.1, Author              
Uklein, R. I., Author
Khabibullin, I. I.1, Author              
Khamitov , I. M., Author
Churazov, E. M.1, Author              
Affiliations:
1High Energy Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159881              

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 Abstract: The results of multiwavelength observations of the very massive galaxy cluster SRGe CL2305.2–2248 detected in X-rays during the first SRG/eROSITA all-sky survey are discussed. This galaxy cluster has also been detected previously in the millimeter band in the South Pole Telescope (SPT-CL J2305–2248) and Atacama Cosmology Telescope (ACT-CL J2305.1–2248) surveys through the observation of the Sunyaev–Zeldovich effect. The spectroscopic redshift has been measured at the 6-m BTA telescope, z=0.7573. In addition, deep photometric measurements of galaxies have been performed at the Russian–Turkish 1.5-m telescope (RTT-150). The mass of the cluster is estimated from the eROSITA data to be M500=(9.0±2.5)×1014M. We show that this cluster is among several tens of the most massive clusters in the observable Universe and among only a few most massive galaxy clusters at z>0.6.

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Language(s): eng - English
 Dates: 2021-11-09
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1134/S1063773721070045
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Title: Astronomy Letters - a Journal of Astronomy and Space Astrophysics
  Alternative Title : Astron. Lett.-J. Astron. Space Astrophys.
Source Genre: Journal
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Pages: - Volume / Issue: 47 (7) Sequence Number: - Start / End Page: 443 - 453 Identifier: ISSN: 1063-7737
ISSN: 1562-6873