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

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)...

Full description

Bibliographic Details
Published in:Astronomy Letters
Main Authors: Burenin, R., Bikmaev, I., Gilfanov, M., Grokhovskaya, A., Dodonov, S., Eselevich, M., Zaznobin, I., Irtuganov, E., Lyskova, N., Medvedev, P., Meshcheryakov, A., Moiseev, A., Sazonov, S., Starobinsky, A., Sunyaev, R., Uklein, R., Khabibullin, I., Khamitov , I., Churazov, E.
Format: Article in Journal/Newspaper
Language:English
Published: 2021
Subjects:
South Pole
South pole
Online Access:http://hdl.handle.net/21.11116/0000-0009-C1C4-F
http://hdl.handle.net/21.11116/0000-0009-C1C6-D
Description
Summary: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 M 500 =(9.0±2.5)×10 14 M ⊙ . 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.

Similar Items