146 citations · 205 across the 4 of their papers we have counts for
4 papers
Oxygen abundances in the narrow line regions of Seyfert galaxies and the metallicity-luminosity relation
Mark Armah, Rogério Riffel, O. L. Dors +7
We present oxygen abundances relative to hydrogen (O/H) in the narrow line regions (NLRs) gas phases of Seyferts 1 (Sy 1s) and Seyferts 2 (Sy 2s) Active Galactic Nuclei (AGNs). We…
Feeding versus feedback in AGN from near-infrared Integral Field Spectroscopy X: NGC5929
Rogemar A. Riffel, Thaisa Storchi-Bergmann, Rogerio Riffel
We present near-infrared emission-line flux distributions, excitation and kinematics, as well as stellar kinematics, of the inner 520x520 pc2$ of the Seyfert 2 galaxy NGC5929. The…
The Stellar Spectral Features of Nearby Galaxies in the Near-Infrared: Tracers of Thermally-Pulsing Asymptotic Giant Branch Stars?
Rogério Riffel, Rachel E. Mason, Lucimara P. Martins +12
We analyze the stellar absorption features in high signal-to-noise ratio near-infrared (NIR) spectra of the nuclear region of 12 nearby galaxies, mostly spirals. The features detec…
Feeding versus Feedback in NGC 4151 probed with Gemini NIFS. I. Excitation
T. Storchi-Bergmann, P. J. McGregor, Rogemar A. Riffel +3
We have used the Gemini Near-infrared Integral Field Spectrograph (NIFS) to map the emission-line intensity distributions and ratios in the Narrow-Line Region (NLR) of the Seyfert…