Metal-poor planetary nebulae with low-mass central stars

Details Metal-poor planetary nebulae with low-mass central stars Metal-poor planetary nebulae with low-mass central stars

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...239..301m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 239, no. 1-2, Nov. 1990, p. 301-304. Research supported by CNPq and FAPESP.

Astronomy and Astrophysics

Astrophysics

16

Metallicity, Planetary Nebulae, Stellar Mass, Abundance, Heavy Elements, Hertzsprung-Russell Diagram, Stellar Luminosity, Stellar Temperature

Scientific paper

Some type II planetary nebulae (PN) present a strong underabundance in heavy element ratios such as O/H and S/H, as compared to most objects of this type at similar galactocentric distances. In this work, both published and new data on chemical abundances are taken into account in order to determine systematic composition differences for these objects. Estimates of the temperatures and luminosities of the central stars suggest that most of them are very low mass objects.

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