FirstLight III: Rest-frame UV-optical spectral energy distributions of simulated galaxies at cosmic dawn

Abstract

Using the FirstLight database of 300 zoom-in cosmological simulations we provide rest-frame UV-optical spectral energy distributions of galaxies with complex star-formation histories that are coupled to the non-uniform gas accretion history of galactic halos during cosmic dawn. The population at any redshift is very diverse ranging from starbursts to quiescent galaxies even at a fixed stellar mass. This drives a redshift-dependent relation between UV luminosity and stellar mass with a large scatter, driven by the specific star formation rate. The UV slope and the production efficiency of Lyman continuum photons have high values, consistent with dust-corrected observations. This indicates young stellar populations with low metallicities. The FirstLight simulations make predictions on the rest-frame UV-optical absolute magnitudes, colors and optical emission lines of galaxies at z=6-12 that will be observed for the first time with JWST and the next generation of telescopes in the coming decade.

10 pages+appendix , 11 figures. Accepted at MNRAS. The FirstLight database is available at http://www.ita.uni-heidelberg.de/~ceverino/FirstLight/index.html

References in corpus (6)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Detection of quiescent galaxies in a bicolor sequence from z=0-2
• Binary Population and Spectral Synthesis Version 2.1: construction, observational verification and new results
• The Relation Between SFR and Stellar Mass for Galaxies at 3.5 $\le z\le$ 6.5 in CANDELS
• The role of stellar feedback in the formation of galaxies
• z~7-10 Galaxies in the HUDF and GOODS fields, and their UV Luminosity Functions

Cited by in corpus (27)

• The GREATS H$\beta$+[OIII] Luminosity Function and Galaxy Properties at $\mathbf{z}\sim 8$: Walking the Way of JWST
• Semi-analytic forecasts for JWST -- II. physical properties and scaling relations for galaxies at z = 4-10
• The Recent Burstiness of Star Formation in Galaxies at z~4.5 from H$\alpha$ Measurements
• Semi-analytic forecasts for JWST -- IV. Implications for cosmic reionization and LyC escape fraction
• Semi-analytic forecasts for JWST -- III. Intrinsic production efficiency of Lyman-continuum radiation
• The Ultimately Large Telescope -- what kind of facility do we need to detect Population III stars?
• RAMSES-RTZ: Non-Equilibrium Metal Chemistry and Cooling Coupled to On-The-Fly Radiation Hydrodynamics
• Weak Evolution of the Mass-metallicity Relation at Cosmic Dawn in the FirstLight Simulations
• Elevated UV luminosity density at Cosmic Dawn explained by non-evolving, weakly mass-dependent star formation efficiency
• WARPFIELD Population Synthesis: The physics of (extra-)Galactic star formation and feedback driven cloud structure and emission from sub-to-kpc scales
• Redshift-dependent galaxy formation efficiency at $z=5-13$ in the FirstLight simulations
• Density modulated star formation efficiency: implications for the observed abundance of ultra-violet luminous galaxies at z>10
• The ionizing photon production efficiency of bright z$\sim$2-5 galaxies
• Signature of the first galaxies in JWST deep field observations
• MOSEL: Strong [OIII]5007 Å Emitting Galaxies at (3<z<4) from the ZFOURGE Survey
• Luminous Lyman-alpha Emitters with Very Blue UV-continuum Slopes at Redshift 5.7 <= z <= 6.6
• Balmer breaks in simulated galaxies at z>6
• Optimal neighbourhood to nurture giants: a fundamental link between star forming galaxies and direct collapse black holes
• First Light And Reionisation Epoch Simulations (FLARES) XIII: The Lyman-continuum emission of high-redshift galaxies
• Statistical stellar mass corrections for high-z galaxies observed with JWST broad-band filters due to template degeneracies
• Dust attenuation in galaxies at cosmic dawn from the FirstLight simulations
• Investigating the physical properties of galaxies in the Epoch of Reionization with MIRI/JWST spectroscopy
• FirstLight IV: Diversity in sub-L${}_{\ast }$ galaxies at cosmic dawn
• Abundant Serendipitous Emission Line Sources with JWST/NIRSpec
• Emission Line Galaxies in the SHARDS Hubble Frontier Fields II: Limits on Lyman-Continuum Escape Fractions of Lensed Emission Line Galaxies at Redshifts 2 < z < 3.5
• The AGORA High-resolution Galaxy Simulations Comparison Project. X: Formation and Evolution of Galaxies at the High-redshift Frontier
• Spectral Energy Distribution of the First Galaxies: Contribution from Pre-Main-Sequence Stars