tokens: We are grateful to the anonymous referee for the valuable comments and advices. In this study, we used the SDSS DR9 data. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the US Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS website is http://www.sdss.org/ . We acknowledge the use of the HyperLeda data base. This work was supported by Russian Foundation for Basic Research (projects nos. 12-02-00685 and 14-22-03006-ofi-m). IYK is also grateful to Dmitry Zimin's non-profit Dynasty Foundation. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. The observations at the 6-meter BTA telescope were carried out with the financial support of the Ministry of Education and Science of the Russian Federation (agreement No. 14.619.21.0004, project ID RFMEFI61914X0004).
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