Evolutionary models for high-metallicity giant extragalactic H II regions

Details Evolutionary models for high-metallicity giant extragalactic H II regions Evolutionary models for high-metallicity giant extragalactic H II regions

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apjs...91..553g&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 91, no. 2, p. 553-581

Astronomy and Astrophysics

Astrophysics

37

Astronomical Models, Galaxies, H Ii Regions, Intergalactic Media, Line Spectra, Metallicity, Photoionization, Spectral Energy Distribution, Star Clusters, Stellar Evolution, Gas Ionization, H Alpha Line, Luminosity, Stellar Atmospheres, Wolf-Rayet Stars

Scientific paper

We present theoretical models for giant H II regions of high metallicity representative of those observed in the inner parts of spiral galaxies. The regions are ionized by young star clusters whose spectral energy distributions are computed on the basis of evolutionary synthesis. The emergent ionizing continua are used as input for the photoionization code CLOUDY to obtain the corresponding emission-line spectra that are then compared to existing observations. The possible implications on the initial mass function (IMF) parameter determination for this kind of H II are discussed.

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