Chemical Abundances in PNe in the spiral NGC 300

Details Chemical Abundances in PNe in the spiral NGC 300 Chemical Abundances in PNe in the spiral NGC 300

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011rmxac..40..177p&link_type=abstract

XIII Latin American Regional IAU Meeting (Eds. W. J. Henney & S. Torres-Peimbert) Revista Mexicana de Astronomía y Astrofísica (

Astronomy and Astrophysics

Astronomy

Galaxies: Individual (Ngc 300), H Ii Regions, Ism: Abundances, Planetary Nebulae

Scientific paper

Chemical abundances have been derived for a sample of more than 20 PNe and several compact HII regions in the galaxy NGC 300, for which [OIII] electron temperatures have been determined based on the line ratio [O III]λ λ4363/5007. The analysis of these data shows a clear abundance gradient for HII regions in the galactic disk. This gradient is flatter and more disperse for PNe. Some differences between HII region and PN abundances are discussed.

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