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Chemical and Photometric Evolution of the Local Group Galaxy NGC 6822 in a Cosmological Context
Leticia Carigi, Pedro Colin, Manuel Peimbert
Based on the photometric properties of NGC 6822 we derive a robust star formation history. Adopting this history we compute 15 models of galactic chemical evolution. All of them ma…
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…
Chemical Composition of Two H II Regions in NGC 6822 Based on VLT Spectroscopy
Antonio Peimbert, Manuel Peimbert, Maria Teresa Ruiz
We present long slit spectrophotometry of regions V and X of the local group irregular galaxy NGC 6822. The data consist of VLT FORS observations in the 3450 to 7500 A range. We ha…
Deep Echelle Spectrophotometry of S 311, a galactic H II Region Outside the Solar Circle
J. Garcia-Rojas, C. Esteban, A. Peimbert +3
We present echelle spectrophotometry of the Galactic H II region S 311. The data have been taken with the Very Large Telescope UVES echelle spectrograph in the 3100 to 10400 angstr…