Helium abundances in planetary nebulae: Nucleosynthesis and chemical evolution

Details Helium abundances in planetary nebulae: Nucleosynthesis and chemical evolution Helium abundances in planetary nebulae: Nucleosynthesis and chemical evolution

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..268..181m&link_type=abstract

Light Elements in the Universe, Proceedings of the International Astronomical Union, IAU Symposium, Volume 268, p. 181-182

Astronomy and Astrophysics

Astronomy

Ism: Planetary Nebulae: General, Galaxy: Abundances

Scientific paper

We have obtained a large sample of PN with accurately determined helium abundances, as well as abundances of several heavy elements. The nebulae are located in the solar neighbourhood, in the galactic bulge, disk and anticentre, and in the Magellanic Clouds. The abundances are analyzed both in terms of the nucleosynthesis of intermediate mass stars and the chemical evolution of the host galaxies. In particular, correlations between the He/H ratio and the abundances of N and O are used as constraints of the nucleosynthetic processes occurring in the progenitor stars.

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