60 citations · 77 across the 2 of their papers we have counts for
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astro-ph2006★ 60 cited
The Central Engines of Narrow-Line Seyfert 1 Galaxies
C. J. Ryan, M. M. De Robertis, S. Virani +2
(abridged) It has been suggested that Narrow-Line Seyfert 1 (NLS1) galaxies are evolutionarily young objects, powered by the accretion of gas onto central black holes that are lowe…
astro-ph2005
Low-luminosity Active Galaxies and their Central Black Holes
Xiaoyi Dong, Michael M. De Robertis
Central black hole masses for 118 spiral galaxies representing morphological stages S0/a through Sc and taken from the large spectroscopic survey of Ho, Filippenko & Sargent (1997)…