Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.129..353f&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 129, no. 2, Jan. 1987, p. 353-360. Research supported by the Fundacao de A
Astronomy and Astrophysics
Astrophysics
23
Abundance, Argon, Chlorine, Neon, Planetary Nebulae, Stellar Composition, Distance, Galactic Nuclei, Milky Way Galaxy
Scientific paper
Heavy-element abundance gradients derived from type II planetary nebulae
(PN) are studied for the elements neon, argon, and chlorine. As in the
case of helium, oxygen, sulphur, and probably carbon and nitrogen, the
abundance of these elements relative to hydrogen present measurable
radial gradients across the galactic disk.
Faundez-Abans Max
Maciel Walter J.
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