The evolution of the galaxy UV luminosity function at redshifts z similar or equal to 8-15 from deep JWST and ground-based near-infrared imaging

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  • C. T. Donnan
  • D. J. McLeod
  • J. S. Dunlop
  • R. J. McLure
  • A. C. Carnall
  • R. Begley
  • F. Cullen
  • M. L. Hamadouche
  • R. A. A. Bowler
  • D. Magee
  • H. J. McCracken
  • B. Milvang-Jensen
  • A. Moneti
  • T. Targett

We reduce and analyse the available JWST ERO and ERS NIRCam imaging (SMACS0723, GLASS, CEERS) in combination with the latest deep ground-based near-infrared imaging in the COSMOS field (provided by UltraVISTA DR5) to produce a new measurement of the evolving galaxy UV luminosity function (LF) over the redshift range z = 8 - 15. This yields a new estimate of the evolution of UV luminosity density (rho(UV)), and hence cosmic star formation rate density (rho(SFR)) out to within = 12, one of which appears to set a new redshift record as an apparently robust galaxy candidate at z similar or equal to 16.4, the properties of which we therefore consider in detail. The advances presented here emphasize the importance of achieving high dynamic range in studies of early galaxy evolution, and re-affirm the enormous potential of forthcoming larger JWST programmes to transform our understanding of the young Universe.

OriginalsprogEngelsk
TidsskriftMonthly Notices of the Royal Astronomical Society
Vol/bind518
Udgave nummer4
Sider (fra-til)6011-6040
Antal sider30
ISSN0035-8711
DOI
StatusUdgivet - 1 feb. 2023

ID: 339616796