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2013MNRAS.430.2605Z - Mon. Not. R. Astron. Soc., 430, 2605-2621 (2013/April-3)
Modelling the narrow-line regions of active galaxies in the Sloan digital sky survey - I. Sample selection and physical conditions.
ZHANG Z.T., LIANG Y.C. and HAMMER F.
Abstract (from CDS):
We also present a comparative study, including stellar mass (M{sstarf}), specific star formation rate (SFR/M{sstarf}) and plasma diagnostic results. We propose that YL ≳ YSY > YC > YSF, where Y is the characteristic present-day star-formation time-scale. One remarkable feature of the Seyferts shown on an M{sstarf}-SFR/M{sstarf} diagram, which we call the evolutionary pattern of AGNs with high ionization potential, is that the strong [Oiii] λ4363 Seyferts distribute uniformly with the weak Seyferts, definitely a reverse of the situation for star-forming galaxies. It is a natural and well-known consensus that strong [Oiii] λ4363 emissions in star-forming galaxies imply young stellar populations and thus low stellar masses. However, in the AGN case, several strong lines of evidence suggest that some supplementary energy source(s) should be responsible for high ionization potential.
Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)
Journal keyword(s): surveys - galaxies: active - galaxies: ISM - galaxies: Seyfert - galaxies: statistics
Simbad objects: 2
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