Published January 1, 2019
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Optical Identifications of Galaxy Clusters Among Objects from the Second Planck Catalogue of Sunyaev-Zeldovich Sources
Creators
- 1. Space Res Inst, Ul Profsoyuznaya 84-32, Moscow 117997, Russia
- 2. Russian Acad Sci, Siberian Branch, Inst Solar Terr Phys, POB 291, Irkutsk 664033, Russia
- 3. Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Karachai Cherke, Russia
- 4. Inst Astrofis Canarias, Tenerife, Spain
- 5. Inst Astrophys Spatiale, Orsay, France
Description
We present the results of optical identifications and spectroscopic redshift measurements for galaxy clusters from the second Planck catalogue of Sunyaev-Zeldovich sources. We used the data of observations with the 1.5-m Russian-Turkish telescope (RTT150), the 1.6-m Sayan Observatory AZT-33IK telescope, the 3.5-m Calar Alto telescope, and the 6-m SAO RAS telescope (Bolshoi Teleskop Azimutalnyi, BTA). For the observations we selected Sunyaev-Zeldovich sources unidentified with galaxy clusters with known redshifts. The observations have been carried out for three years, as a result of which we obtained direct images in various filters for a set of galaxy clusters and spectra for the brightest red-sequence galaxies of these clusters. For 38 galaxy clusters we obtained spectroscopic redshift measurements.
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