Ultraluminous Infrared Galaxies at 1.5<z<3 Occupy Dark Matter Haloes of Mass ˜6×1013Msun

Farrah, D, Lonsdale, CJ, Borys, C, Fang, F, Waddington, I, Oliver, S, Rowan-Robinson, M, Babbedge, T, Shupe, D, Polletta, M., Smith, HE and Surace, J (2007) Ultraluminous Infrared Galaxies at 1.5<z<3 Occupy Dark Matter Haloes of Mass ˜6×1013Msun. In: Deepest Astronomical Surveys ASP Conference Series, 9-13 October, 2006, Sintra, Portugal..

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Abstract

We present measurements of the spatial clustering of ultraluminous infrared galaxies in two redshift intervals, Both samples cluster strongly, with r0=14.40±1.99 h-1Mpc for the 2<z<3 sample, and r0=9.40±2.24 h-1Mpc for the 1.5<z<2.0 sample, making them among the most biased galaxies at these epochs. These clustering amplitudes are consistent with both populations residing in dark matter haloes with masses of ˜6×1013Msun. We infer that a minimum dark matter halo mass is an important factor for all forms of luminous, obscured activity in galaxies at z>1. Adopting plausible models for the growth of DM haloes with redshift, then the haloes hosting the 2<z<3 sample will likely host the richest clusters of galaxies at z=0, whereas the haloes hosting the 1.5<z<2.0 sample will likely host poor to rich clusters at z=0.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published in: At the Edge of the Universe: Latest Results from the Deepest Astronomical Surveys ASP Conference Series, Vol. 380, proceedings of the conference held 9-13 October, 2006 at Sintra, Portugal. Edited by José Afonso, Henry C. Ferguson, Bahram Mobasher, and Ray Norris., p.399
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Seb Oliver
Date Deposited: 06 Feb 2012 20:33
Last Modified: 30 Mar 2012 11:24
URI: http://sro.sussex.ac.uk/id/eprint/26587
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