Abundance calibration and evolution of giant H II regions

Details Abundance calibration and evolution of giant H II regions Abundance calibration and evolution of giant H II regions

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.157...61v&link_type=abstract

(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Pheno

Astronomy and Astrophysics

Astrophysics

5

Abundance, H Ii Regions, Calibrating, Chemical Evolution, Photoionization

Scientific paper

This paper presents a self-consistent method to determine abundance and evolutionary status for giant H II regions (GHR) as well as the nominal temperature of the ionizing cluster and the ionization parameter. This new method makes it possible to recalibrate the empirical relationship (R23, O/H) by Pagel et al (1979) up to abundances three times solar. The effects of evolution of GHR on their observed spectra are explained in terms of the cooling down of the ionizing population, and some evolutionary tracks are presented.

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