Baugh, C. M. and Lacey, Cedric G. and Frenk, C. S. and Granato, G. L. and Silva, L. and Bressan, A. and Benson, A. J. and Cole, Shaun (2005) 'Can the faint submillimetre galaxies be explained in the Λ cold dark matter model ?', Monthly Notices of the Royal Astronomical Society., 356 (3). pp. 1191-1200.
We present predictions for the abundance of submillimetre galaxies (SMGs) and Lyman-break galaxies (LBGs) in the Λ cold dark matter cosmology. A key feature of our model is the self-consistent calculation of the absorption and emission of radiation by dust. The new model successfully matches the LBG luminosity function, as well as reproducing the properties of the local galaxy population in the optical and infrared. The model can also explain the observed galaxy number counts at 850 μm, but only if we assume a top-heavy initial mass function for the stars formed in bursts. The predicted redshift distribution of SMGs depends relatively little on their flux over the range 1–10 mJy, with a median value of z≈ 2.0 at a flux of 5 mJy, in good agreement with the recent measurement by Chapman et al. The counts of SMGs are predicted to be dominated by ongoing starbursts. However, in the model these bursts are responsible for making only a few per cent of the stellar mass locked up in massive ellipticals at the present day.
|Keywords:||Galaxies, Evolution, Formation, High-redshift, Submillimetre.|
|Full text:||PDF - Published Version (306Kb)|
|Publisher Web site:||http://dx.doi.org/10.1111/j.1365-2966.2004.08553.x|
|Publisher statement:||This article has been published in the Monthly Notices of the Royal Astronomical Society © 2004 RAS. Published by Oxford University Press on behalf of The Royal Astronomical Society. All rights reserved.|
|Record Created:||22 Nov 2006|
|Last Modified:||23 Jul 2014 22:02|
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