The NIRVANDELS Survey: a robust detection of α-enhancement in star-forming galaxies at z\simeq3.4

We present results from the NIRVANDELS survey investigating the gas-phase metallicity (\mathrm{Z}_{\mathrm{gas}}, tracing O/H) and stellar metallicity (Z_{\star}, tracing Fe/H) of 33 star-forming galaxies at redshifts 2.95 < z < 3.80. Based on a combined analysis of deep optical and near-IR spectra, tracing the rest-frame far ultraviolet and rest-frame optical... Show more