9 citations · 13 across the 4 of their papers we have counts for
5 papers
Oxygen Recombination Line Abundances in Gaseous Nebulae
Antonio Peimbert, Manuel Peimbert
The determination of the heavy element abundances from giant extragalactic H II regions has been generally based on collisionally excited lines. We will discuss the reasons to stud…
Photoionization Models of Metal-poor Extragalactic HII Regions and the Primordial Helium Abundance
V. Luridiana, A. Peimbert, M. Peimbert
We discuss the effects of collisional enhancement of Balmer lines on the determination of the primordial helium abundance. To this aim, we present a photoionization model of the me…
Chemical Abundances of Extragalactic H II regions
Manuel Peimbert, Antonio Peimbert
The determination of the heavy element abundances from giant extragalactic H II regions is based on collisionally excited lines. We argue that in the presence of temperature variat…
Chemical Abundances of NGC 5461 and NGC 5471 derived from Echelle Spectrophotometry
V. Luridiana, C. Esteban, M. Peimbert +1
We present high resolution spectroscopic data of the two giant extragalactic H II regions NGC 5461 and NGC 5471 in M101, which have been obtained with the 2.1-m telescope of the Ob…
The Temperature Structure in Ionized Nebulae and the Chemical Evolution of Galaxies
Manuel Peimbert, Antonio Peimbert
A few results that indicate the presence of temperature variations in gaseous nebulae are reviewed. The evidence is based on: a) temperatures derived from different methods, and b)…