%0 Generic %1 donnan2022evolution %A Donnan, C. T. %A McLeod, D. J. %A Dunlop, J. S. %A McLure, R. J. %A Carnall, A. C. %A Begley, R. %A Cullen, F. %A Hamadouche, M. L. %A Bowler, R. A. A. %A McCracken, H. J. %A Milvang-Jensen, B. %A Moneti, A. %A Targett, T. %D 2022 %K library %T The evolution of the galaxy UV luminosity function at redshifts z ~ 8-15 from deep JWST and ground-based near-infrared imaging %U http://arxiv.org/abs/2207.12356 %X We re-reduce and analyse the available James Webb Space Telescope (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 $< 300$ Myr of the Big Bang. Our results confirm that the high-redshift LF is best described by a double power-law (rather than a Schechter) function, and that the LF and the resulting derived $\rho_UV$ (and thus $\rho_SFR$), continues to decline gradually and steadily over this redshift range (as anticipated from previous studies which analysed the pre-existing data in a consistent manner). We provide details of the 55 high-redshift galaxy candidates, 44 of which are new, that have enabled this new analysis. Our sample contains 6 galaxies at $z 12$, one of which appears to set a new redshift record as an apparently robust galaxy candidate at $z 16.7$, 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.

@misc{donnan2022evolution, abstract = {We re-reduce and analyse the available James Webb Space Telescope (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 ($\rho_{\rm UV}$), and hence cosmic star-formation rate density ($\rho_{\rm SFR}$) out to within $< 300$ Myr of the Big Bang. Our results confirm that the high-redshift LF is best described by a double power-law (rather than a Schechter) function, and that the LF and the resulting derived $\rho_{\rm UV}$ (and thus $\rho_{\rm SFR}$), continues to decline gradually and steadily over this redshift range (as anticipated from previous studies which analysed the pre-existing data in a consistent manner). We provide details of the 55 high-redshift galaxy candidates, 44 of which are new, that have enabled this new analysis. Our sample contains 6 galaxies at $z \ge 12$, one of which appears to set a new redshift record as an apparently robust galaxy candidate at $z \simeq 16.7$, 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.}, added-at = {2022-07-26T11:05:01.000+0200}, author = {Donnan, C. T. and McLeod, D. J. and Dunlop, J. S. and McLure, R. J. and Carnall, A. C. and Begley, R. and Cullen, F. and Hamadouche, M. L. and Bowler, R. A. A. and McCracken, H. J. and Milvang-Jensen, B. and Moneti, A. and Targett, T.}, biburl = {https://www.bibsonomy.org/bibtex/2446c16ff5c5ee1def7a349dbdce43aef/gpkulkarni}, description = {The evolution of the galaxy UV luminosity function at redshifts z ~ 8-15 from deep JWST and ground-based near-infrared imaging}, interhash = {4a991872e73d8937087847f812aafe36}, intrahash = {446c16ff5c5ee1def7a349dbdce43aef}, keywords = {library}, note = {cite arxiv:2207.12356Comment: 28 pages, 4 figures in main manuscript, submitted to MNRAS}, timestamp = {2022-07-26T11:05:01.000+0200}, title = {The evolution of the galaxy UV luminosity function at redshifts z ~ 8-15 from deep JWST and ground-based near-infrared imaging}, url = {http://arxiv.org/abs/2207.12356}, year = 2022 }