This work focuses on understanding the formation of the first massive, passive galaxies in clusters, as a first step to the development of environmental trends seen at low redshift. Cl J1449+0856 is an excellent case to study this - a galaxy cluster at redshift z=1.99 that already shows evidence of a virialised atmosphere. Here we highlight two recent results: the discovery of merger-driven star formation and highly-excited molecular gas in galaxies at the core of Cl J1449, along with the lowest-mass Sunyaev-Zel’dovich detection to date.
|Number of pages
|Proceedings of the International Astronomical Union
|Published - Mar 2020
- galaxies: ISM
- galaxies: clusters: individual
- galaxies: evolution
- galaxies: starburst