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The spectra of three newly discovered high‐redshift quasars

 

作者: V. L. Afanasjev,   I. D. Karachentsev,   V. A. Lipovetsky,   H. Lorenz,   D. Stoll,  

 

期刊: Astronomische Nachrichten  (WILEY Available online 1979)
卷期: Volume 300, issue 1  

页码: 31-36

 

ISSN:0004-6337

 

年代: 1979

 

DOI:10.1002/asna.19793000105

 

出版商: WILEY‐VCH Verlag

 

数据来源: WILEY

 

摘要:

AbstractSpectra 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 ar

 

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