The relation between chemical enrichment and core mass in planetary nebulae

Details The relation between chemical enrichment and core mass in planetary nebulae The relation between chemical enrichment and core mass in planetary nebulae

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...362..491k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 362, Oct. 20, 1990, p. 491-502.

Astronomy and Astrophysics

Astrophysics

54

Helium, Magellanic Clouds, Nitrogen, Planetary Nebulae, Stellar Evolution, Stellar Mass, Astronomical Spectroscopy, Carbon, Hydrogen, Oxygen

Scientific paper

Innovative methods of analysis are applied to data on PN in the Magellanic Clouds, in order to derive the masses of 32 central stars, the nebular nitrogen and helium abundances, and the form of the relationships among these properties. It is found that N/O stays relatively constant at about 0.2 from the lowest core mass up to about 0.65 solar mass, whereupon it climbs very suddenly to high levels, between 1 and 2, by 0.7 solar mass. Above 0.9 solar mass, N/O either stays constant with increasing core mass or even declines, but it does not continue to increase.

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