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Massive galaxies: born as disks, dead as spheroids

Published online by Cambridge University Press:  17 July 2013

Fernando Buitrago
Fernando Buitrago*
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh, EH9 3HJ, U.K. email: fb@roe.ac.uk University of Nottingham, School of Physics & Astronomy, Nottingham, NG7 2RD, U.K.
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Abstract

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Present day massive (Mstellar > 1011 M⊙) galaxies are composed mostly of early-type objects. To ascertain whether this was also the case at higher redshift, we have compiled over a thousand massive galaxies at 0 < z < 3 with HST imaging and spectroscopic redshifts for the majority of them. We have also analyzed using 3D spectroscopy another sample of 10 massive galaxies at z = 1.4. Both works highlight the progressive change between a late-type/peculiar nature at z > 2 and a predominance of early-type morphologies only since z = 1.

Keywords

galaxies: evolutiongalaxies: high-redshiftgalaxies: structure

References

Bell, E., et al. 2012, ApJ, 753, 167Google Scholar
Buitrago, F., et al. 2008, ApJ (Letters), 687, L61Google Scholar
Buitrago, F., et al. 2013, MNRAS, 428, 1460Google Scholar