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arXiv · 1301.6373

The Morphologies of Massive Galaxies at 1 < z < 3 in the CANDELS-UDS Field

V. A. Bruce·J. S. Dunlop·M. Cirasuolo·R. J. McLure·T. A. Targett·E. F. Bell·D. J. Croton·A. Dekel·S. M. Faber·H. C. Ferguson·N. A. Grogin·D. D. Kocevski·A. M. Koekemoer·D. C. Koo·K. Lai·J. M. Lotz·E. J. McGrath·J. A. Newman·A. van der Wel
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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_star > 10^11 M_solar) galaxies at 1 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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V. A. Bruce, J. S. Dunlop, M. Cirasuolo, R. J. McLure, T. A. Targett, E. F. Bell, D. J. Croton, A. Dekel, S. M. Faber, H. C. Ferguson, N. A. Grogin, D. D. Kocevski, A. M. Koekemoer, D. C. Koo, K. Lai, J. M. Lotz, E. J. McGrath, J. A. Newman, A. van der Wel. 2013-01-27. The Morphologies of Massive Galaxies at 1 < z < 3 in the CANDELS-UDS Field. https://arxiv.org/abs/1301.6373

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