Optical identifications of high-redshift galaxy clusters from Planck Sunyaev-Zeldovich survey

Abstract

We present the results of optical identifications and spectroscopic redshifts measurements for galaxy clusters from 2-nd Planck catalogue of Sunyaev-Zeldovich sources (PSZ2), located at high redshifts, $z\approx 0.7-0.9$. We used the data of optical observations obtained with Russian-Turkish 1.5-m telescope (RTT150), Sayan observatory 1.6-m telescope, Calar Alto 3.5-m telescope and 6-m SAO RAS telescope (Bolshoi Teleskop Alt-azimutalnyi, BTA). Spectroscopic redshift measurements were obtained for seven galaxy clusters, including one cluster, PSZ2 G126.57+51.61, from the cosmological sample of PSZ2 catalogue. In central regions of two clusters, PSZ2 G069.39+68.05 and PSZ2 G087.39-34.58, the strong gravitationally lensed background galaxies are found, one of them at redshift $z=4.262$. The data presented below roughly double the number of known galaxy clusters in the second Planck catalogue of Sunyaev-Zeldovich sources at high redshifts, $z\approx 0.8$.

12 pages, 9 figures. Accepted for publication in Astronomy Letters

References in corpus (6)

• The 400 square degrees ROSAT PSPC galaxy cluster survey: Catalog and statistical calibration
• Planck 2013 results. XXIX. The Planck catalogue of Sunyaev-Zeldovich sources: Addendum
• Planck Intermediate Results. XXXVI. Optical identification and redshifts of Planck SZ sources with telescopes in the Canary Islands Observatories
• ADAM low- and medium-resolution spectrograph for 1.6-m AZT-33IK telescope
• An extension of the Planck galaxy cluster catalogue
• Additional spectroscopic redshift measurements for galaxy clusters from the First Planck Catalogue

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