Speaker
Description
Over the last year, we have witnessed a mad dash as the community tries to confirm candidate z>10 galaxies identified through HST and JWST photometry. Multiple ALMA DDT observations have been conducted, targeting the [OIII] 88 micron (and [CII] 158 micron) emission of these candidates, with the aim of securing their redshifts. But, at the time of this abstract submission, none of these candidates have been "robustly" detected in the [OIII] or [CII] transition. In this talk, I will discuss the statistical tests of the ALMA data that we performed for the observations of the z~13 candidate, HD1, for which we found no credible evidence of any [OIII] or [CII] emission. I will also present the broader lessons learnt from performing these tests and put these in context of the other candidates targeted, but not confirmed, with ALMA.
