205 citations · 1.5k across the 63 of their papers we have counts for
7 papers · 1 filter
Interaction effects on galaxy pairs with Gemini/GMOS- I: Electron density
A. C. Krabbe, D. A. Rosa, O. L. Dors +5
We present an observational study about the impacts of the interactions in the electron density of \ion{H}{ii} regions located in 7 systems of interacting galaxies. The data consis…
Optical and mid-infrared neon abundance determinations in star-forming regions
Oli L. Dors, Guillermo F. Hagele, Monica V. Cardaci +6
We employed observational spectroscopic data of star-forming regions compiled from the literature and photoionization models to analyse the neon ionic abundances obtained using bot…
Molecular Hydrogen and [Fe II] in Active Galactic Nuclei III: LINERS and Star Forming Galaxies
R. Riffel, A. Rodriguez-Ardila, I. Aleman +4
We study the kinematics and excitation mechanisms of H2 and [Fe II] lines in a sample of 67 emission-line galaxies with Infrared Telescope Facility SpeX near-infrared (NIR, 0.8-2.4…
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…