| Eddington ratio governs the equivalent width of MgII emission line in active galactic nuclei (2009) | |||||||||
Abstract | |||||||||
| We have investigated the ensemble regularities of the equivalent widths (EWs) of MgII 2800 emission line of active galactic nuclei (AGNs), using a uniformly selected sample of 2092 Seyfert 1 galaxies and quasars at 0.45 . Comment: 5 pages, expanded discussion on Baldwin effect, added refs. Matches version to appear in ApJ Letters | |||||||||
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