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The photometric properties of galaxies in the early Universe
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Wilkins, Stephen M., Feng, Yu, Di-Matteo, Tiziana, Croft, Rupert, Stanway, Elizabeth R., Bunker, Andrew J., Waters, Dacen and Lovell, Christopher (2016) The photometric properties of galaxies in the early Universe. Monthly Notices of the Royal Astronomical Society, 460 (3). pp. 3170-3178. doi:10.1093/mnras/stw1154 ISSN 0035-8711.
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Official URL: http://dx.doi.org/10.1093/mnras/stw1154
Abstract
We use the large cosmological hydro-dynamic simulation BLUETIDES to predict the photometric properties of galaxies during the epoch of reionization (z = 8–15). These properties include the rest-frame UV to near-IR broad-band spectral energy distributions, the Lyman continuum (LyC) photon production, the UV star formation rate calibration, and intrinsic UV continuum slope. In particular we focus on exploring the effect of various modelling assumptions, including the assumed choice of stellar population synthesis (SPS) model, initial mass function, and the escape fraction of LyC photons, upon these quantities. We find that these modelling assumptions can have a dramatic effect on photometric properties leading to consequences for the accurate determination of physical properties from observations. For example, at z = 8 we predict that nebular emission can account for up to 50 per cent of the rest-frame R-band luminosity, while the choice of SPS model can change the LyC production rate up to a factor of ×2.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QC Physics | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Library of Congress Subject Headings (LCSH): | Cosmology | ||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||
Publisher: | Oxford University Press | ||||||
ISSN: | 0035-8711 | ||||||
Official Date: | 11 August 2016 | ||||||
Dates: |
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Volume: | 460 | ||||||
Number: | 3 | ||||||
Number of Pages: | 9 | ||||||
Page Range: | pp. 3170-3178 | ||||||
DOI: | 10.1093/mnras/stw1154 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 10 August 2016 | ||||||
Date of first compliant Open Access: | 10 August 2016 | ||||||
Funder: | National Science Foundation (U.S.) (NSF), Science and Technology Facilities Council (Great Britain) (STFC) | ||||||
Grant number: | ACI-1036211 (NSF), AST-1517593 (NSF), AST-1009781 (NSF), ST/L000652/1 (STFC), ST/L000733/1 (STFC) |
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