Tag

Quasars

3 documents

What Controls the Fe II Strength in Active Galactic Nuclei

We used a large, homogeneous sample of 4178 z <= 0.8 Seyfert 1 galaxies and QSOs selected from the Sloan Digital Sky Survey to investigate the strength of…
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Broad reprocessed Balmer emission from warped accretion discs

Double peaked broad emission lines in active galactic nuclei are generally considered to be formed in an accretion disc. In this paper, we compute the profiles of…
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The Blueshifting and Baldwin Effects for the [O III] lambda5007 Emission Line in Type 1 Active Galactic Nuclei

We use homogeneous samples of radio-quiet Seyfert 1 galaxies and QSOs selected from the Sloan Digital Sky Survey to investigate the connection between the velocity…
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