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Low Surface Brightness Galaxies Around the Hubble Deep Field South

Published online by Cambridge University Press:  01 June 2007

L. Haberzettl ,
D. J. Bomans  and
R.-J. Dettmar
L. Haberzettl
Affiliation:
Astronomical Institute Ruhr-University Bochum, Universitätsstr. 150, 44780 Bochum, Germany Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, USA
D. J. Bomans
Affiliation:
Astronomical Institute Ruhr-University Bochum, Universitätsstr. 150, 44780 Bochum, Germany
R.-J. Dettmar
Affiliation:
Astronomical Institute Ruhr-University Bochum, Universitätsstr. 150, 44780 Bochum, Germany
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Abstract

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We present results from a study of the SFH of a sample of LSB galaxies around the HDF-S. For the selection of the LSB galaxy candidates we used color–color diagrams, from which we selected the candidates based on their different location in comparison to the HSB galaxy redshift tracks. We compared measured spectra to synthetic SEDs from synthesis evolution models. We were able to fit SEDs in the range of 2 to 5 Gyr to the spectra of the LSB galaxies, while applying the same method to a sample of HSB galaxies resulted in an averaged stellar population of about 10 to 14 Gyr. Therefore, LSB galaxies tend to show much younger averaged stellar populations. This implies that the major star formation event of LSB galaxies took place at a redshift of z ~ 0.2 to 0.4 while for HSB galaxies this tends to be at z ~ 2 to 4.

Keywords

galaxies: generalgalaxies: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S244: Dark Galaxies and Lost Baryons , June 2007 , pp. 354 - 355
Copyright
Copyright © International Astronomical Union 2008

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