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Downsizing Scaling Relations

Published online by Cambridge University Press:  19 May 2006

G.A. Mamon ,
F. Combes ,
C. Deffayet ,
B. Fort ,
B.L. Ziegler ,
A. Böhm  and
A. Fritz
B.L. Ziegler
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
A. Böhm
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
A. Fritz
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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Abstract

Faber–Jackson and Tully–Fisher scaling relations forelliptical and spiral galaxy samples up to z = 1provide evidence for a differential behaviour of galaxy evolution with mass.In compliance with the downsizing scenario, the stellar populations of lessmassive galaxies display a stronger evolution than the more massive ones.For spirals, this may be attributed to a suppressed star formation efficiencyin small dark matter halos.For ellipticals, star formation must have been negligible at leastduring the past ~4 Gyr in all environments.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 20: Mass Profiles and Shapes of Cosmological Structures , 2006 , pp. 303 - 304
Copyright
© EAS, EDP Sciences, 2006

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