Abundance Gradients in M33: the Use of Planetary Nebulae

Details Abundance Gradients in M33: the Use of Planetary Nebulae Abundance Gradients in M33: the Use of Planetary Nebulae

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..804..262s&link_type=abstract

PLANETARY NEBULAE AS ASTRONOMICAL TOOLS: International Conference on Planetary Nebulae as Astronomical Tools. AIP Conference Pr

Astronomy and Astrophysics

Astronomy

1

Planetary Nebulae, Galaxies, Planetary Nebulae, Spiral Galaxies, Chemical Composition And Chemical Evolution

Scientific paper

We present our observations of several planetary nebulae in the central zones of the spiral galaxy M33. We combine the abundances we derived for our objects with those obtained by Magrini et al. (2004) for a sample of PNe at larger galactocentric distances. We compare the radial abundance distribution derived from planetary nebulae with the one derived by HII regions and massive stars. We discuss the uncertainties and biases of the abundance derivations in planetary nebulae and HII regions. We show that planetary nebulae, although difficult to observe, are an important tool to investigate the chemical evolution of galaxies.

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