Most distant galaxy spectroscopically confirmed with ALMA 

Figures from the two papers showing detection of the [OIII] emission line at z=14.179.
a. JWST/NIRCam F200W imaging with ALMA contours (left) and spectrum taken with ALMA (right) of JADES-GS-z14-0 from Schouws et al. 2024.
b. ALMA imaging with JWST/NIRCam F200W contours (left) and pectrum taken with ALMA (right) and of JADES-GS-z14-0 from Carniani et al. 2024.

A number of candidate very high-redshift galaxies have been identified with JWST. One of the most distant candidate galaxies was JADES-GS-z14-0. With ALMA, two groups have independently spectroscopically confirmed via the detection of an [OIII] emission line that this galaxy lies at z=14.179, when the Universe was just 300 million years old. The galaxy has a surprisingly high metallicity and low gas fraction with a stellar mass of approximately a billion solar masses, suggesting that galaxies formed very quickly in the early Universe. It remains to be seen if JADES-GS-z14-0 will challenge or confirm models of galaxy formation, but these findings clearly demonstrate the capabilities of ALMA to constrain the properties of galaxies at the highest redshifts. 

You can read the paper preprints here:

Schouws et al. 2024, "Detection of [OIII]88μm in JADES-GS-z14-0 at z=14.1793"

Carniani et al. 2024, "The eventful life of a luminous galaxy at z = 14: metal enrichment, feedback, and low gas fraction?"

ALMA poll of the month

Results from August's poll, "Have you ever made use of data from an ALMA Large Programme?"