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  Spectroscopic redshift determination for a sample of distant quasars detected by the SRG observatory based on RTT-150 observations. I

Bikmaev, I. F., Irtuganov, E. N., Nikolaeva, E. A., Sakhibullin, N. A., Gumerov, R. I., Sklyanov, A. S., et al. (2021). Spectroscopic redshift determination for a sample of distant quasars detected by the SRG observatory based on RTT-150 observations. I. Astronomy Letters - a Journal of Astronomy and Space Astrophysics, 46(10), 645-657. doi:10.1134/S1063773720100047.

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Spectroscopic Redshift Determination for a Sample of Distant Quasars.pdf (Any fulltext), 4MB
 
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Bikmaev, I. F., Author
Irtuganov, E. N., Author
Nikolaeva, E. A., Author
Sakhibullin, N. A., Author
Gumerov, R. I., Author
Sklyanov, A. S., Author
Glushkov, M. V., Author
Borisov, V. D., Author
Burenin, R. A., Author
Zaznobin, I. A., Author
Krivonos, R.A., Author
Lyapin, A. R., Author
Medvedev, P.S., Author
Meshcheryakov, A. V., Author
Sazonov, S. Yu., Author
Sunyaev, R. A.1, Author              
Khorunzhev, G. A., Author
Gilfanov, M. R.1, Author              
Affiliations:
1High Energy Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159881              

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 Abstract: Results of the first spectroscopic observations at the 1.5-m Russian–Turkish telescope for the X-ray sources discovered by the eROSITA telescope onboard the SRG space observatory and identified by the SRGz machine learning system as candidates for distant X-ray quasars are presented. Seven objects have been confirmed as quasars at redshifts z=2.7−4.2 and two sources, which were included in the program of optical observations aimed at testing and adjusting SRGz and had a significant uncertainty in the photometric redshift, have turned out to be Seyfert galaxies at z≈0.6.

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Language(s): eng - English
 Dates: 2021-11-08
 Publication Status: Published online
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1134/S1063773720100047
Other: LOCALID: 3292556
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Title: Astronomy Letters - a Journal of Astronomy and Space Astrophysics
  Alternative Title : Astron. Lett.-J. Astron. Space Astrophys.
Source Genre: Journal
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Pages: - Volume / Issue: 46 (10) Sequence Number: - Start / End Page: 645 - 657 Identifier: ISSN: 1063-7737
ISSN: 1562-6873