MNRAS-2016-Waters-L51-5.pdf (1.49 MB)
Monsters in the dark: predictions for luminous galaxies in the early Universe from the BlueTides simulation
journal contribution
posted on 2023-06-09, 02:52 authored by Dacen Waters, Stephen WilkinsStephen Wilkins, Tiziana Di Matteo, Yu Feng, Rupert Croft, Daisuke NagaiUsing deep Hubble and Spitzer observations Oesch et al. have identified a bright (MUV ˜ -22) star-forming galaxy candidate at z ˜ 11. The presence of GN-z11 implies a number density ~10-6?Mpc-3, roughly an order of magnitude higher than the expected value based on extrapolations from lower redshift. Using the unprecedented volume and high resolution of the BLUETIDES cosmological hydrodynamical simulation, we study the population of luminous rare objects at z > 10. The luminosity function in BLUETIDES implies an enhanced number of massive galaxies, consistent with the observation of GN-z11. We find about 30 galaxies at MUV ˜ -22 at z = 11 in the BLUETIDES volume, including a few objects about 1.5 mag brighter. The probability of observing GN-z11 in the volume probed by Oesch et al. is ~13 per cent. The predicted properties of the rare bright galaxies at z = 11 in BLUETIDES closely match those inferred from the observations of GN-z11. BLUETIDES predicts a negligible contribution from faint AGN in the observed SED. The enormous increase in volume surveyed by WFIRST will provide observations of ~1000 galaxies with MUV < -22 beyond z = 11 out to z = 13.5.
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Publication status
- Published
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- Published version
Journal
Monthly Notices of the Royal Astronomical Society: LettersISSN
1745-3933Publisher
Oxford University PressExternal DOI
Issue
1Volume
461Page range
L51-L55Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-09-13First Open Access (FOA) Date
2016-09-13First Compliant Deposit (FCD) Date
2016-09-13Usage metrics
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