Optical spectra and redshifts of 15 flat-spectrum radio sources |
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| Affiliation: | 1. Hacettepe University, Beytepe Campus, Division of Educational Sciences, Ankara, 06800, Turkey;2. Hacettepe University, Beytepe Campus, Division of Educational Sciences, Ankara, 06800, Turkey;1. Department of Microbiology, University of Innsbruck, Innsbruck, 6020, Austria;2. Grupo de Ecoloxía Animal (GEA), Universidade de Vigo, Vigo, 36310, Spain;3. Amt der Tiroler Landesregierung, Innsbruck, 6020, Austria;4. Department for Civil and Environmental Engineering Norwegian University of Science and Technology, Trondheim, 7491, Norway;1. Department of Orthopedics, Faculty of Medicine, Thammasat University, Rangsit, Prathumthani, Thailand;2. Orthopaedische Chirurgie München (OCM), Munich, Germany |
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| Abstract: | Optical spectra for 15 QSO candidates, selected from optical identifications of flat-spectrum radio sources, are presented. Six of them have obvious emission line features, which confirm them to be quasars. The largest redshift is 3.45 for PKS 0335-122. Selection effects in the search for quasars with redshifts greater than 3.5 are discussed. |
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