Planetary nebulae, stars and chemical evolution of stellar systems
Photoionized nebulae, stars and the chemical evolution of galaxies
Photoionized nebulae, stars and the chemical evolution of galaxies
1) abundance gradients from planetary in the galactic disk. 2) distances of galact...
Abundance gradients in the galactic disk: o, ne, s, ar, n, c, and cl.
Chemical evolution of barred spiral galaxies and chemical abundances of planetary ...