English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a systematic search of candidate galaxies at z > 11.3 using thepublic Near Infrared Camera data taken by the James Webb Space Telescope (JWST)in its Cycle 1, which include six blank fields totalling 386 sq.arcmin and twolensing cluster fields totalling 48 sq.arcmin. The candidates are selected asF150W, F200W and F277W dropouts, which correspond to z ~ 12.7 (11.3 < z <15.4), 17.3 (15.4 < z < 21.8) and 24.7 (21.8 < z < 28.3), respectively. Oursample consists of 123 F150W dropouts, 52 F200W dropouts and 32 F277W dropouts,which is the largest candidate galaxy sample probing the highest redshift rangeto date. The F150W and F200W dropouts have sufficient photometric informationthat allows contaminant rejection, which we do by fitting to their spectrumenergy distributions. Based on the purified samples of F150W and F200Wdropouts, we derive galaxy luminosity functions at z ~ 12.7 and 17.3,respectively. We find that both are better described by power law thanSchechter function and that there is only a marginal evolution (a factor of <2) between the two epochs. The emergence of galaxy population at z ~ 17.3 orearlier is consistent with the suggestion of an early cosmic hydrogenreionization and is not necessarily a crisis of the LCDM paradigm. To establisha new picture of galaxy formation in the early universe, we will need both JWSTspectroscopic confirmation of bright candidates such as those in our sample anddeeper surveys to further constrain the faint-end of the luminosity function atM > -18 mag.

Candidate Galaxies at z ~ 11.3--21.8 and beyond: results from JWST's public data taken in its first year