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Dynamical masses of early-type galaxies at z ~ 2

Published online by Cambridge University Press:  17 July 2013

Michele Cappellari
Michele Cappellari*
Affiliation:
Sub-department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH email: cappellari@astro.ox.ac.uk
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Abstract

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The evolution of masses and sizes of passive (early-type) galaxies with redshift provides ideal constraints to galaxy formation models. These parameters can in principle be obtained for large galaxy samples from multi-band photometry alone. However the accuracy of photometric masses is limited by the non-universality of the IMF. Galaxy sizes can be biased at high redshift due to the inferior quality of the imaging data. Both problems can be avoided using galaxy dynamics, and in particular by measuring the galaxies stellar velocity dispersion. Here we provide an overview of the efforts in this direction.

Keywords

galaxies: elliptical and lenticularcDgalaxies: evolutiongalaxies: formationgalaxies: kinematics and dynamicsgalaxies: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S295: The intriguing life of massive galaxies , August 2012 , pp. 37 - 44
Copyright
Copyright © International Astronomical Union 2013 

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