Advanced search
1 file | 29.49 MB Add to list

Reproducing the Universe : a comparison between the EAGLE simulations and the nearby DustPedia galaxy sample

Author
Organization
Abstract
We compare the spectral energy distributions (SEDs) and inferred physical properties for simulated and observed galaxies at low redshift. We exploit UV-submillimetre mock fluxes of ∼7000 z = 0 galaxies from the EAGLE suite of cosmological simulations, derived using the radiative transfer code skirt. We compare these to ∼800 observed galaxies in the UV-submillimetre range, from the DustPedia sample of nearby galaxies. To derive global properties, we apply the SED fitting code cigale consistently to both data sets, using the same set of ∼80 million models. The results of this comparison reveal overall agreement between the simulations and observations, both in the SEDs and in the derived physical properties, with a number of discrepancies. The optical and far-infrared regimes, and the scaling relations based upon the global emission, diffuse dust, and stellar mass, show high levels of agreement. However, the mid-infrared fluxes of the EAGLE galaxies are overestimated while the far-UV domain is not attenuated enough, compared to the observations. We attribute these discrepancies to a combination of galaxy population differences between the samples and limitations in the subgrid treatment of star-forming regions in the EAGLE-skirt post-processing recipe. Our findings show the importance of detailed radiative transfer calculations and consistent comparison, and provide suggestions for improved numerical models.</jats:p>
Keywords
SPECTRAL ENERGY-DISTRIBUTION, STAR-FORMATION RATE, RADIATIVE-TRANSFER CODE, DUST-TO-GAS, COSMOLOGICAL SIMULATION, STARBURST GALAXIES, FORMATION RATES, STELLAR MASSES, SKY SURVEY, MILKY-WAY. Radiative transfer, methods: numerical, dust, extinction, galaxies: evolution, galaxies: formation, submillimetre: galaxies

Downloads

  • Trcka et al. 2020.pdf
    • full text (Published version)
    • |
    • open access
    • |
    • PDF
    • |
    • 29.49 MB

Citation

Please use this url to cite or link to this publication:

MLA
Trčka, Ana, et al. “Reproducing the Universe : A Comparison between the EAGLE Simulations and the Nearby DustPedia Galaxy Sample.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 494, 2020, pp. 2823–38, doi:10.1093/mnras/staa857.
APA
Trčka, A., Baes, M., Camps, P., van der Wel, S. M., Trayford, J., Bianchi, S., … Xilouris, E. M. (2020). Reproducing the Universe : a comparison between the EAGLE simulations and the nearby DustPedia galaxy sample. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 494, 2823–2838. https://doi.org/10.1093/mnras/staa857
Chicago author-date
Trčka, Ana, Maarten Baes, Peter Camps, Sharon Meidt van der Wel, James Trayford, Simone Bianchi, Viviana Casasola, et al. 2020. “Reproducing the Universe : A Comparison between the EAGLE Simulations and the Nearby DustPedia Galaxy Sample.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 494: 2823–38. https://doi.org/10.1093/mnras/staa857.
Chicago author-date (all authors)
Trčka, Ana, Maarten Baes, Peter Camps, Sharon Meidt van der Wel, James Trayford, Simone Bianchi, Viviana Casasola, Letizia P Cassarà, Ilse De Looze, Pieter De Vis, Wouter Dobbels, Jacopo Fritz, Maud Galametz, Frédéric Galliano, Antonios Katsianis, Suzanne C Madden, Aleksandr V Mosenkov, Angelos Nersesian, Sébastien Viaene, and Emmanuel M Xilouris. 2020. “Reproducing the Universe : A Comparison between the EAGLE Simulations and the Nearby DustPedia Galaxy Sample.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 494: 2823–2838. doi:10.1093/mnras/staa857.
Vancouver
1.
Trčka A, Baes M, Camps P, van der Wel SM, Trayford J, Bianchi S, et al. Reproducing the Universe : a comparison between the EAGLE simulations and the nearby DustPedia galaxy sample. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2020;494:2823–38.
IEEE
[1]
A. Trčka et al., “Reproducing the Universe : a comparison between the EAGLE simulations and the nearby DustPedia galaxy sample,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 494, pp. 2823–2838, 2020.
@article{8699276,
  abstract     = {{We compare the spectral energy distributions (SEDs) and inferred physical properties for simulated and observed galaxies at low redshift. We exploit UV-submillimetre mock fluxes of ∼7000 z = 0 galaxies from the EAGLE suite of cosmological simulations, derived using the radiative transfer code skirt. We compare these to ∼800 observed galaxies in the UV-submillimetre range, from the DustPedia sample of nearby galaxies. To derive global properties, we apply the SED fitting code cigale consistently to both data sets, using the same set of ∼80 million models. The results of this comparison reveal overall agreement between the simulations and observations, both in the SEDs and in the derived physical properties, with a number of discrepancies. The optical and far-infrared regimes, and the scaling relations based upon the global emission, diffuse dust, and stellar mass, show high levels of agreement. However, the mid-infrared fluxes of the EAGLE galaxies are overestimated while the far-UV domain is not attenuated enough, compared to the observations. We attribute these discrepancies to a combination of galaxy population differences between the samples and limitations in the subgrid treatment of star-forming regions in the EAGLE-skirt post-processing recipe. Our findings show the importance of detailed radiative transfer calculations and consistent comparison, and provide suggestions for improved numerical models.</jats:p>}},
  author       = {{Trčka, Ana and Baes, Maarten and Camps, Peter and van der Wel, Sharon Meidt and Trayford, James and Bianchi, Simone and Casasola, Viviana and Cassarà, Letizia P and De Looze, Ilse and De Vis, Pieter and Dobbels, Wouter and Fritz, Jacopo and Galametz, Maud and Galliano, Frédéric and Katsianis, Antonios and Madden, Suzanne C and Mosenkov, Aleksandr V and Nersesian, Angelos and Viaene, Sébastien and Xilouris, Emmanuel M}},
  issn         = {{0035-8711}},
  journal      = {{MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY}},
  keywords     = {{SPECTRAL ENERGY-DISTRIBUTION,STAR-FORMATION RATE,RADIATIVE-TRANSFER CODE,DUST-TO-GAS,COSMOLOGICAL SIMULATION,STARBURST GALAXIES,FORMATION RATES,STELLAR MASSES,SKY SURVEY,MILKY-WAY. Radiative transfer,methods: numerical,dust,extinction,galaxies: evolution,galaxies: formation,submillimetre: galaxies}},
  language     = {{eng}},
  pages        = {{2823--2838}},
  title        = {{Reproducing the Universe : a comparison between the EAGLE simulations and the nearby DustPedia galaxy sample}},
  url          = {{http://doi.org/10.1093/mnras/staa857}},
  volume       = {{494}},
  year         = {{2020}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: