205 citations · 1.5k across the 63 of their papers we have counts for
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A correlation between the stellar and [Fe II] velocity dispersions in Active Galaxies
Rogemar A. Riffel, Thaisa Storchi-Bergmann, Rogerio Riffel +8
We use near-infrared spectroscopic data from the inner few hundred parsecs of a sample of 47 active galaxies to investigate possible correlations between the stellar velocity dispe…
Imagery and long-slit spectroscopy of the Polar-Ring Galaxy AM2020-504
P. Freitas-Lemes, I. Rodrigues, M. Faúndez-Abans +2
Interactions between galaxies are very common. There are special kinds of interactions that produce systems called Polar Ring Galaxies (PRGs), composed by a lenticular, elliptical,…
X-rays as dominant excitation mechanism of [Fe ii] and H2 emission lines in active galaxies
Oli L. Dors, Rogemar A. Riffel, Monica V. Cardaci +4
We investigate the excitation mechanisms of near-infrared [Fe ii] and H2 emission lines observed in Active Galactic Nuclei (AGNs). We built a photoionization model grid considering…