Bernhard, E. orcid.org/0000-0001-9227-7346, Bethermin, M., Sargent, M. et al. (5 more authors) (2014) Modelling the connection between ultraviolet and infrared galaxy populations across cosmic times. Monthly Notices of the Royal Astronomical Society, 442 (1). pp. 509-520. ISSN 0035-8711
Abstract
Using a phenomenological approach, we self-consistently model the redshift evolution of the ultraviolet (UV) and infrared (IR) luminosity functions across cosmic time, as well as a range of observed IR properties of UV-selected galaxy population. This model is an extension of the 2SFM (2 star formation modes) formalism, which is based on the observed ‘main sequence’ of star-forming galaxies, i.e. a strong correlation between their stellar mass and their star formation rate, and a secondary population of starbursts with an excess of star formation. The balance between the UV light from young, massive stars and the dust-reprocessed IR emission is modelled following the empirical relation between the attenuation (IRX for IR excess hereafter) and the stellar mass, assuming a scatter of 0.4 dex around this relation. We obtain good overall agreement with the measurements of the IR luminosity function up to z ∼ 3 and the UV luminosity functions up to z ∼ 6, and show that a scatter on the IRX–M relation is mandatory to reproduce these observables. We also naturally reproduce the observed, flat relation between the mean IRX and the UV luminosity at LUV > 109.5 L⊙. Finally, we perform predictions of the UV properties and detectability of IR-selected samples and the vice versa, and discuss the results in the context of the UV-rest-frame and sub-millimetre surveys of the next decade.
Metadata
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Copyright, Publisher and Additional Information: | © 2014 Oxford University Press. This is an author produced version of a paper subsequently published in Monthly Notices of the Royal Astronomical Society. Uploaded in accordance with the publisher's self-archiving policy. | ||||
Keywords: | galaxies: evolution; galaxies: luminosity function, mass function; galaxies: statistics; infrared: galaxies; ultraviolet: galaxies | ||||
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 22 Apr 2016 09:18 | ||||
Last Modified: | 22 Mar 2018 00:33 | ||||
Published Version: | http://dx.doi.org/10.1093/mnras/stu896 | ||||
Status: | Published | ||||
Publisher: | Oxford University Press | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1093/mnras/stu896 | ||||
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