Abstract
| Curti |
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| The metallicity properties of galaxies across cosmic time: the JWST revolution |
| I will discuss the emerging picture on the chemical properties of early (z~3-10) galaxies in the context of the observations taken within the first year of JWST, with specific focus on the joint NIRCam-NIRSpec GTO Survey JADES. Exploiting JADES 'deep (~7 hours) ' and 'medium (~1-3hours)' spectroscopic observations of hundreds of galaxies we can characterise the cosmic evolution in the emission line properties and the metallicity scaling relations, and their constraints on the processes driving galaxy assembly in the early Universe. I will also present the 'MARTA' Survey, a 'very deep' (up to 33 hours on source in G140M/F100LP; 7 hours in G235M/F170LP; 3 hours in G235H/F170LP) Cycle 1 GO JWST/NIRSpec programme (PI Curti) aimed at studying in detail the ISM properties of ~70 galaxies at the cosmic noon (z~2-3). By simultaneously measuring multiple emission lines in individual spectra, including the elusive temperature-sensitive auroral lines like [O III]4363 and [O II]7320,30, we characterise the star-formation, metal enrichment, and dust properties of these sources, link them to the gas kinematics and the presence of outflows (from R2700 observations), and provide one of the most detailed pictures of the ISM physics in z~2-3 galaxies to date. |