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

被引：26

作者：

Trcka, Ana ^{[1
]}

Baes, Maarten ^{[1
]}

Camps, Peter ^{[1
]}

Meidt, Sharon E. ^{[1
]}

Trayford, James ^{[2
]}

Bianchi, Simone ^{[3
]}

Casasola, Viviana ^{[3
,4
]}

Cassara, Letizia P. ^{[5
]}

De Looze, Ilse ^{[1
,6
]}

De Vis, Pieter ^{[7
]}

Dobbels, Wouter ^{[2
]}

Fritz, Jacopo ^{[8
]}

Galametz, Maud ^{[9
]}

Galliano, Frederic ^{[9
]}

Katsianis, Antonios ^{[10
,11
]}

Madden, Suzanne C. ^{[9
]}

Mosenkov, Aleksandr, V ^{[12
]}

Nersesian, Angelos ^{[1
,13
,14
]}

Viaene, Sebastien ^{[1
,15
]}

Xilouris, Emmanuel M. ^{[13
]}

机构：

[1] Univ Ghent, Sterrenkundig Observ, Krijgslaan 281, B-9000 Ghent, Belgium

[2] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[3] INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy

[4] INAF, Ist Radioastron, Via P Gobetti 101, I-40129 Bologna, Italy

[5] INAF, Ist Astrofis Spaziale & Fis Cosm, Via Alfonso Corti 12, I-20133 Milan, Italy

[6] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England

[7] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, Wales

[8] UNAM, Inst Radioastron & Astrofis, Campus Morelia,AP 3-72, Morelia 58089, Michoacan, Mexico

[9] Univ Paris Diderot, Univ Paris Saclay, Sorbonne Paris Cite, AIM,CEA,CNRS, F-91191 Gif Sur Yvette, France

[10] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China

[11] Shanghai Jiao Tong Univ, Dept Astron, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China

[12] RAS, Cent Astron Observ, Pulkovskoye Chaussee 65-1, St Petersburg 196140, Russia

[13] Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sen, GR-15236 Athens, Greece

[14] Univ Athens, Fac Phys, Dept Astrophys Astron & Mech, GR-15784 Athens, Greece

[15] Univ Hertfordshire, Ctr Astrophys Res, Coll Lane, Hatfield AL10 9AB, Herts, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 494卷 / 02期

关键词：

radiative transfer; methods: numerical; dust; extinction; galaxies: evolution; galaxies: formation; submillimetre: galaxies; SPECTRAL ENERGY-DISTRIBUTION; STAR-FORMATION RATE; RADIATIVE-TRANSFER CODE; DUST-TO-GAS; COSMOLOGICAL SIMULATION; STARBURST GALAXIES; FORMATION RATES; STELLAR MASSES; SKY SURVEY; MILKY-WAY;

D O I：

10.1093/mnras/staa857

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 7000 z = 0 galaxies from the EAGLE suite of cosmological simulations, derived using the radiative transfer code SKIRT. We compare these to similar 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 similar to 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.

引用

页码：2823 / 2838

页数：16

共 126 条

[61] The evolution of the star formation rate function in the EAGLE simulations: a comparison with UV, IR and Hα observations from z ∼ 8 to z ∼ 0 [J].