Earliest Galaxy Evolution in the CANUCS+Technicolor Fields: Galaxy Properties at z  ∼ 10–16 Seen with the Full NIRCam Medium- and Broadband Filters

Abstract We present a sample of z phot ∼ 10–16 galaxies by exploiting some of the richest JWST NIRCam imaging data, taken in the CANUCS survey in Cycle 1 and the Technicolor (TEC) survey in Cycle 2. The combination of the CANUCS+TEC provides multiepoch, deep NIRCam images in all medium bands (MBs) and broad bands (BBs) onboard NIRCam (22 filters in total), over ∼ 23 arcmin 2 in three independent lines of sight. We select high- z galaxy candidates based on photometric redshifts, and obtain eight candidates at z ∼ 10–16, including a very robust candidate at z ∼ 15.4. The ultraviolet (UV) luminosity function (LF) from our sample is consistent with previous JWST studies showing a scatter of ∼0.6 dex…

• ST
  Space Telescope Science Institute

  Awards: NAS5-03127, NAS5-26555
• NS
  Natural Sciences and Engineering Research Council of Canada

  Awards: 18JWST-GTO1, 23JWGO2A13, 23JWGO2B15