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The spectra of three newly discovered high‐redshift quasars
Author(s) -
Afanasjev V. L.,
Karachentsev I. D.,
Lipovetsky V. A.,
Lorenz H.,
Stoll D.
Publication year - 1979
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.19793000105
Subject(s) - quasar , redshift , physics , astrophysics , equivalent width , spectral line , emission spectrum , line (geometry) , astronomy , galaxy , geometry , mathematics
Spectra of three high‐redshift quasars discovered on low‐dispersion objective prism plates were obtained. We present the emission line identifications and redshifts of the objects. Equivalent widths, line widths and low‐resolution line profiles are given characterizing the quasar emission region. The Lyα and CIV equivalent widths indicate that the considered quasars are luminous objects at high redshift. Both these equivalent widths are too low by a factor 4, whereas the N V/Lyα ratio is 5 times larger than predicted by the photoionisation models. The line profiles are compared with logarithmic, electron‐scattering and Gaussian profiles. In all the spectra rich absorption line systems are evident.