Predictions for deep galaxy surveys with JWST from ΛCDM
| Autor: | Cedric G. Lacey, Shaun Cole, W. I. Cowley, Carlton M. Baugh, Carlos S. Frenk |
|---|---|
| Přispěvatelé: | Astronomy |
| Rok vydání: | 2017 |
| Předmět: |
Initial mass function
Cold dark matter INITIAL MASS FUNCTION Dark matter SPECTRAL ENERGY-DISTRIBUTIONS DARK-AGES REIONIZATION Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics STAR-FORMATION RATE 01 natural sciences galaxies: high-redshift 0103 physical sciences Galaxy formation and evolution galaxies: formation 010303 astronomy & astrophysics Reionization Astrophysics::Galaxy Astrophysics Luminosity function (astronomy) Physics UV LUMINOSITY FUNCTIONS 010308 nuclear & particles physics FORMATION SIMULATION Astrophysics::Instrumentation and Methods for Astrophysics Astronomy Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Redshift Galaxy LYMAN-BREAK GALAXIES Space and Planetary Science MILKY-WAY SATELLITES FORMATION MODELS HIGH-REDSHIFT galaxies: evolution |
| Zdroj: | Monthly Notices of the Royal Astronomical Society, 474(2), 2352-2372. Oxford University Press NASA Astrophysics Data System |
| ISSN: | 1365-2966 0035-8711 |
| Popis: | We present predictions for the outcome of deep galaxy surveys with the $James$ $Webb$ $Space$ $Telescope$ ($JWST$) obtained from a physical model of galaxy formation in $\Lambda$CDM. We use the latest version of the GALFORM model, embedded within a new ($800$ Mpc)$^{3}$ dark matter only simulation with a halo mass resolution of $M_{\rm halo}>2\times10^{9}$ $h^{-1}$ M$_{\odot}$. For computing full UV-to-mm galaxy spectral energy distributions, including the absorption and emission of radiation by dust, we use the spectrophotometric radiative transfer code GRASIL. The model is calibrated to reproduce a broad range of observational data at $z\lesssim6$, and we show here that it can also predict evolution of the rest-frame far-UV luminosity function for $7\lesssim z\lesssim10$ which is in good agreement with observations. We make predictions for the evolution of the luminosity function from $z=16$ to $z=0$ in all broadband filters on the Near InfraRed Camera (NIRCam) and Mid InfraRed Instrument (MIRI) on $JWST$ and present the resulting galaxy number counts and redshift distributions. Our fiducial model predicts that $\sim1$ galaxy per field of view will be observable at $z\sim11$ for a $10^4$ s exposure with NIRCam. A variant model, which produces a higher redshift of reionization in better agreement with $Planck$ data, predicts number densities of observable galaxies $\sim5\times$ greater at this redshift. Similar observations with MIRI are predicted not to detect any galaxies at $z\gtrsim6$. We also make predictions for the effect of different exposure times on the redshift distributions of galaxies observable with $JWST$, and for the angular sizes of galaxies in $JWST$ bands. Comment: 23 Pages, 13 Figures, 4 Tables. Accepted for publication in MNRAS |
| Databáze: | OpenAIRE |
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