664 citations · 2k across the 51 of their papers we have counts for
50 papers
Atomic Data Assessment with PyNeb
Christophe Morisset, Valentina Luridiana, Jorge García-Rojas +3
PyNeb is a Python package widely used to model emission lines in gaseous nebulae. We take advantage of its object-oriented architecture, class methods, and historical atomic databa…
Neutron-capture element abundances in the planetary nebula NGC 5315 from deep optical and near-infrared spectrophotometry
S. Madonna, J. García-Rojas, N. C. Sterling +5
We analyze the chemical composition of the planetary nebula (PN) NGC 5315, through high-resolution (R = 40000) optical spectroscopy with UVES at the Very Large Telescope, and mediu…
Identification of Near-Infrared [Se III] and [Kr VI] Emission Lines in Planetary Nebulae
N. C. Sterling, S. Madonna, K. Butler +5
We identify [Se III] 1.0994 micron in the planetary nebula (PN) NGC 5315 and [Kr VI] 1.2330 micron in three PNe, from spectra obtained with the FIRE spectrometer on the 6.5-m Baade…
Neutron-capture element abundances in the planetary nebula NGC 5315 from deep high-resolution optical and near-IR spectrophotometry
S. Madonna, J. García-Rojas, N. C. Sterling +1
We have done a spectroscopical analysis of the type I planetary nebula (PN) NGC 5315, through high-resolution (R40000) optical spectroscopy with UVES at the 8.2m Very Large T…
The primordial helium abundance and the number of neutrino families
Antonio Peimbert, Manuel Peimbert, Valentina Luridiana
Based on observations of HII regions and the new computations of the recombination coefficients of the He I lines by Porter et al. (2013) we obtain a primordial helium abundance by…
A window on the efficiency of the s-process in AGB stars: chemical abundances of n-capture elements in the planetary nebula NGC 3918
S. Madonna, J. García-Rojas, V. Luridiana +2
The chemical content of the planetary nebula NGC 3918 is investigated through deep, high-resolution (R~40000) UVES at VLT spectrophotometric data. We identify and measure more than…