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Title:
The Morphologies of Massive Galaxies at 1<z<3 in the CANDELS-UDS Field: Compact Bulges, and the Rise and Fall of Massive Disks
Authors:
Bruce, V. A.; Dunlop, J. S.; Cirasuolo, M.; McLure, R. J.; Targett, T. A.; Bell, E. F.; Croton, D. J.; Dekel, A.; Faber, S. M.; Ferguson, H. C.; Grogin, N. A.; Kocevski, D. D.; Koekemoer, A. M.; Koo, D. C.; Lai, K.; Lotz, J. M.; McGrath, E. J.; Newman, J. A.; van der Wel, A.
Affiliation:
AA(SUPA ‡ Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ), AB(SUPA ‡ Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ), AC(SUPA ‡ Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ), AD(SUPA ‡ Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ), AE(SUPA ‡ Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ), AF(Department of Astronomy, University of Michigan, 500 Church St., Ann Arbor, MI 48109, USA), AG(Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia), AH(Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel), AI(UCO/Lick Observatory, University of California, Santa Cruz, CA 95064, USA), AJ(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA), AK(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA), AL(UCO/Lick Observatory, University of California, Santa Cruz, CA 95064, USA), AM(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA), AN(UCO/Lick Observatory, University of California, Santa Cruz, CA 95064, USA), AO(UCO/Lick Observatory, University of California, Santa Cruz, CA 95064, USA), AP(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA), AQ(UCO/Lick Observatory, University of California, Santa Cruz, CA 95064, USA), AR(University of Pittsburgh, Pittsburgh, PA 15260, USA), AS(Max-Planck Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany)
Publication:
The Intriguing Life of Massive Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 295, pp. 49-52
Publication Date:
07/2013
Origin:
CUP
Keywords:
galaxies: elliptical and lenticular, cD, galaxies: evolution, galaxies: high-redshift, galaxies: structure,
Abstract Copyright:
(c) 2013: Copyright © International Astronomical Union 2013
DOI:
10.1017/S1743921313004237
Bibliographic Code:
2013IAUS..295...49B

Abstract

We have used high-resolution, HST WFC3/IR, near-infrared imaging to conduct a detailed bulge-disk decomposition of the morphologies of ~= 200 of the most massive (M * > 1011 M&sun;) galaxies at 1 < z < 3 in the CANDELS-UDS field. We find that, while such massive galaxies at low redshift are generally bulge-dominated, at redshifts 1<z<2 they are predominantly mixed bulge+disk systems, and by z > 2 they are mostly disk-dominated. Interestingly, we find that while most of the quiescent galaxies are bulge-dominated, a significant fraction (25-40%) of the most quiescent galaxies, have disk-dominated morphologies. Thus, our results suggest that the physical mechanisms which quench star-formation activity are not simply connected to those responsible for the morphological transformation of massive galaxies.

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