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

被引：0

作者：

Burenin, R. A. ^{[1
]}

Bikmaev, I. F. ^{[2
,3
]}

Gilfanov, M. R. ^{[1
,4
]}

Grokhovskaya, A. A. ^{[5
]}

Dodonov, S. N. ^{[5
]}

Eselevich, M., V ^{[6
]}

Zaznobin, I. A. ^{[1
]}

Irtuganov, E. N. ^{[2
,3
]}

Lyskova, N. S. ^{[1
]}

Medvedev, P. S. ^{[1
]}

Meshcheryakov, A., V ^{[1
]}

Moiseev, A., V ^{[1
,5
]}

Sazonov, S. Yu ^{[1
]}

Starobinsky, A. A. ^{[7
]}

Sunyaev, R. A. ^{[1
,4
]}

Uklein, R., I ^{[5
]}

Khabibullin, I. I. ^{[1
,4
]}

Khamitov, I. M. ^{[2
,8
]}

Churazov, E. M. ^{[1
,4
]}

机构：

[1] Russian Acad Sci, Space Res Inst, Moscow 117997, Russia

[2] Kazan Fed Univ, Kazan 420000, Russia

[3] Acad Sci Tatarstan, Kazan, Russia

[4] Max Planck Inst Astrophys, Karl Schwarzschild Str 1,Postfach 1317, D-85741 Garching, Germany

[5] Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Karachai Cherke, Russia

[6] Russian Acad Sci, Inst Solar Terr Phys, Siberian Branch, Irkutsk 664033, Russia

[7] Russian Acad Sci, Landau Inst Theoret Phys, Chernogolovka, Russia

[8] TUBITAK Natl Observ, Antalya, Turkey

来源：

ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS | 2021年 / 47卷 / 07期

基金：

俄罗斯科学基金会;

关键词：

galaxy clusters; sky surveys; 2ND PLANCK CATALOG; X-RAY; OPTICAL IDENTIFICATIONS; COSMOLOGY; TELESCOPE; REDSHIFTS; SAMPLE;

D O I：

10.1134/S1063773721070045

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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) x 10(14) M-circle dot. 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.

引用

页码：443 / 453

页数：11

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