Metallicity Dependence of Starburst Spectra
Abstract
We discuss on the basis of our evolutionary spectral models the impact of chemical composition on the spectrum of stellar population formed in the starburst. Their metallicity range Z=0.0001 - 0.05(0.1) fully covers the observable one; depending on age, wavelength region and IMF the UV-fluxes differ between extreme compositions at least tenfold, usually more. Independently of age, UV-fluxes shortwards of Balmer jump monotonically decline with the growth of metallicity. Optical and especially IR-region are also influenced, with the typical difference 10-50 times in fluxes at wavelengths >1 micron. In IR the situation which composition is the brightest emitter gets reversed with age.
Cite
@article{arxiv.astro-ph/9905297,
title = {Metallicity Dependence of Starburst Spectra},
author = {P. Traat},
journal= {arXiv preprint arXiv:astro-ph/9905297},
year = {2007}
}
Comments
2 pages, LATEX, with 1 encapsulated figure. To appear in: "Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies", K.A. van der Hucht, G. Koenigsberger & P.R.J. Eenens (eds.),Proc. IAU Symp. No. 193 (San Francisco: ASP)