The photometric properties of galaxies in the early Universe. Wilkins, S. M., Feng, Y., Di-Matteo, T., Croft, R., Stanway, E. R., Bunker, A., Waters, D., & Lovell, C. Monthly Notices of the Royal Astronomical Society, 460:3170–3178, August, 2016. Paper doi abstract bibtex 2 downloads 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.
@article{wilkins_photometric_2016,
title = {The photometric properties of galaxies in the early {Universe}},
volume = {460},
issn = {0035-8711},
url = {http://adsabs.harvard.edu/abs/2016MNRAS.460.3170W},
doi = {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.},
urldate = {2020-03-26},
journal = {Monthly Notices of the Royal Astronomical Society},
author = {Wilkins, Stephen M. and Feng, Yu and Di-Matteo, Tiziana and Croft, Rupert and Stanway, Elizabeth R. and Bunker, Andrew and Waters, Dacen and Lovell, Christopher},
month = aug,
year = {2016},
keywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, galaxies: high-redshift, galaxies: photometry, methods: numerical},
pages = {3170--3178},
}
Downloads: 2
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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. 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