114 citations · 475 across the 28 of their papers we have counts for
28 papers
The time evolution of the Milky Way's oxygen abundance gradient
M. Mollá, Á. I. Díaz, O. Cavichia +5
We study the evolution of oxygen abundance radial gradients as a function of time for the Milky Way Galaxy obtained with our {\sc Mulchem} chemical evolution model. We review the r…
Mass Loss Rates of Li-rich AGB/RGB Stars
W. J. Maciel, R. D. D. Costa
A sample of AGB/RGB stars with an excess of Li abundances is considered in order to estimate their mass loss rates. Our method is based on a correlation between the Li abundances a…
Abundances in photoionized nebulae of the Local Group and nucleosynthesis of intermediate mass stars
W. J. Maciel, R. D. D. Costa, O. Cavichia
Photoionized nebulae, comprising HII regions and planetary nebulae, are excellent laboratories to investigate the nucleosynthesis and chemical evolution of several elements in the…
The evolution of the Oxygen abundance radial gradient in the Milky Way Galaxy disk
M. Mollá, O. Cavichia, R. D. D Costa +3
We review the state of our chemical evolution models for spiral and low mass galaxies. We analyze the consequences of using different stellar yields, infall rate laws and star form…
NGC 2440 : A morpho-kinematical model
Paulo J. A. Lago, Roberto D. D. Costa
This work describes the modelling of the 3D structure and position-velocity (P-V) diagrams of NGC 2440, a well known planetary nebula, aiming to describe the morphology of this obj…
Radial abundance gradients from planetary nebulae at different distances from the galactic plane
W. J. Maciel, R. D. D. Costa, O. Cavichia
We investigate the variations of the radial O/H abundance gradients from planetary nebulae (PN) located at different distances from the galactic plane. In particular, we determine…