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Title:
Dynamical masses of early-type galaxies at z ~ 2
Authors:
Cappellari, Michele
Affiliation:
AA(Sub-department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH )
Publication:
The Intriguing Life of Massive Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 295, pp. 37-44
Publication Date:
07/2013
Origin:
CUP
Keywords:
galaxies: elliptical and lenticular, cD, galaxies: evolution, galaxies: formation, galaxies: kinematics and dynamics, galaxies: structure,
Abstract Copyright:
(c) 2013: Copyright © International Astronomical Union 2013
DOI:
10.1017/S1743921313004213
Bibliographic Code:
2013IAUS..295...37C

Abstract

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.

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