Chemical behavior of planetary nebulae and galactic abundance gradients

Details Chemical behavior of planetary nebulae and galactic abundance gradients Chemical behavior of planetary nebulae and galactic abundance gradients

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...280..581p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 280, no. 2, p. 581-591

Astronomy and Astrophysics

Astrophysics

37

Abundance, Chemical Analysis, Gradients, Interstellar Matter, Mass Ratios, Milky Way Galaxy, Planetary Nebulae, Carbon, Chemical Composition, Galactic Evolution, Helium, Homogeneity, Hydrogen, Neon, Nitrogen, Oxygen

Scientific paper

All modern determinations of chemical abundances of He/H, O/H, C/H, N/H and Ne/H in 277 galactic Planetary Nebulae have been used to update our knowledge of the chemical behavior of Planetary Nebulae, as a whole and in Peimbert's groups. The data have been used to set up the problem of the chemical gradients in the Galaxy from Planetary Nebulae. The Interstellar Medium has been found to be more inhomogeneous in the past epochs of the Galaxy than in the present time.

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