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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/31011
Title: Reproducing the Universe: a comparison between the EAGLE simulations and the nearby DustPedia galaxy sample
Authors: Trčka, Ana
Baes, Maarten
Camps, Peter
Meidt, Sharon E.
Trayford, James
BIANCHI, SIMONE 
CASASOLA, VIVIANA 
CASSARA, LETIZIA PASQUA 
De Looze, Ilse
De Vis, Pieter
Dobbels, Wouter
Fritz, Jacopo
Galametz, Maud
Galliano, Frédéric
Katsianis, Antonios
Madden, Suzanne C.
Mosenkov, Aleksandr V.
Nersesian, Angelos
Viaene, Sébastien
Xilouris, Emmanuel M.
Issue Date: 2020
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 494
Issue: 2
First Page: 2823
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.
URI: http://hdl.handle.net/20.500.12386/31011
URL: https://academic.oup.com/mnras/article/494/2/2823/5815797
ISSN: 0035-8711
DOI: 10.1093/mnras/staa857
Bibcode ADS: 2020MNRAS.494.2823T
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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