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Stellar populations of BCD galaxies from spectrophotometric evolutionary synthesis

Published online by Cambridge University Press:  07 August 2017

H. Krüger ,
U. Fritze-v. Alvensleben ,
H.-H Loose  and
K. J. Fricke
H. Krüger
Affiliation:
Universitätssternwarte Geismarlandstr. 11 W–3400 Göttingen Germany
U. Fritze-v. Alvensleben
Affiliation:
Universitätssternwarte Geismarlandstr. 11 W–3400 Göttingen Germany
H.-H Loose
Affiliation:
Universitätssternwarte Geismarlandstr. 11 W–3400 Göttingen Germany
K. J. Fricke
Affiliation:
Universitätssternwarte Geismarlandstr. 11 W–3400 Göttingen Germany

Abstract

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Evolutionary synthesis models have been computed to construct the spectral energy distributions of BCD galaxies in the optical and NIR ranges (0.3 to 3.5μm). Evolutionary tracks for stars having Z = 1/10 Z⊙ have been employed in order to match the observed low metal abundances of BCDs. Gaseous emission from H II regions has been included in the model. A starburst (of duration 5 · 106yr) is superimposed on an underlying component of red stars characterised by continuous star formation. Burst parameters, star formation rates and ionised hydrogen gas masses have been deduced by fitting the models to observed spectral energy distributions (SEDs) of BCDs.

Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 442
Copyright
Copyright © Kluwer 

References

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