205 citations
- Universidade de São PauloBR43 papers
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- Consejo Nacional de Investigaciones Científicas y TécnicasAR31 papers
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- Universidade Federal do Rio Grande do SulBR28 papers
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6 papers · 1 filter
The Influence of Crystallinity Degree on the Glycine Decomposition Induced by 1 MeV Proton Bombardment in Space Analog Conditions
Sergio Pilling, Luiz A. V. Mendes, Vinicius Bordalo +3
Glycine is the simplest proteinaceous amino acid and is present in all life-forms on Earth. In aqueous solutions, it appears mainly as zwitterion glycine (+NH3CH2COO-); however, in…
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,…
A study of the remarkable galaxy system AM 546-324 (the core of Abell S0546)
M. Faúndez-Abans, A. C. Krabbe, M. Oliveira-Abans +4
We report first results of an investigation of the tidally disturbed galaxy system AM\,546-324, whose two principal galaxies 2MFGC 04711 and AM\,0546-324 (NED02) were previously cl…
Formation of unsaturated hydrocarbons in interstellar ice analogs by cosmic rays
S. Pilling, D. P. P. Andrade, E. F. da Silveira +3
The formation of double and triple C-C bonds from the processing of pure c-C6H12 (cyclohexane) and mixed H2O:NH3:c-C6H12 (1:0.3:0.7) ices by highly-charged, and energetic ions (219…
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…