We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.

Durham Research Online
You are in:

Can the faint submillimetre galaxies be explained in the Λ cold dark matter model ?

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.

Item Type:Article
Keywords:Galaxies, Evolution, Formation, High-redshift, Submillimetre.
Full text:(VoR) Version of Record
Download PDF
Publisher Web site:
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.
Date accepted:No date available
Date deposited:20 November 2013
Date of first online publication:January 2005
Date first made open access:No date available

Save or Share this output

Look up in GoogleScholar