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We present the results of a study utilising ultra-deep, rest-frame UV, spectroscopy to quantify the relationship between stellar mass and stellar metallicity for 681 star-forming galaxies at $2.5<z<5.0$ ($langle z rangle = 3.5 pm 0.6$) drawn from the VANDELS survey. Via a comparison with high-resolution stellar population models, we determine stellar metallicities for a set of composite spectra formed from subsamples selected by mass and redshift. Across the stellar mass range $8.5 < mathrm{log}(langle M_{ast} rangle/rm{M}_{odot}) < 10.2$ we find a strong correlation between stellar metallicity and stellar mass, with stellar metallicity monotonically increasing from $Z_{ast}/mathrm{Z}_{odot} < 0.09$ at $langle M_{ast} rangle = 3.2 times 10^{8} rm{M}_{odot}$ to $Z_{ast}/Z_{odot} = 0.27$ at $langle M_{ast} rangle = 1.7 times 10^{10} rm{M}_{odot}$. In contrast, at a given stellar mass, we find no evidence for significant metallicity evolution across the redshift range of our sample. However, comparing our results to the $z=0$ stellar mass-metallicity relation, we find that the $langle z rangle = 3.5$ relation is consistent with being shifted to lower metallicities by $simeq 0.6$ dex. Contrasting our derived stellar metallicities with estimates of gas-phase metallicities at similar redshifts, we find evidence for enhanced $rm{O}/rm{Fe}$ ratios of the order (O/Fe) $gtrsim 1.8$ $times$ (O/Fe)$_{odot}$. Finally, by comparing our results to simulation predictions, we find that the $langle z rangle = 3.5$ stellar mass-metallicity relation is consistent with current predictions for how outflow strength scales with galaxy mass. This conclusion is supported by an analysis of analytic models, and suggests that the mass loading parameter ($eta=dot{M}_{mathrm{outflow}}/M_{ast}$) scales as $eta propto M_{ast}^{beta}$ with $beta simeq -0.4$.
We present the results of a new study of dust attenuation at redshifts $3 < z < 4$ based on a sample of $236$ star-forming galaxies from the VANDELS spectroscopic survey. Motivated by results from the First Billion Years (FiBY) simulation project, we
We present a rest-frame UV-optical stacked spectrum representative of quiescent galaxies at $1.0 < z < 1.3$ with log$(M_*/rm{M_odot}) > 10.8$. The stack is constructed using VANDELS survey data, combined with new KMOS observations. We apply two indep
The aim of this paper is to investigate spectral and photometric properties of 854 faint ($i_{AB}$<~25 mag) star-forming galaxies (SFGs) at 2<z<2.5 using the VIMOS Ultra-Deep Survey (VUDS) spectroscopic data and deep multi-wavelength photometric data
We study the mean properties of a large representative sample of 217 galaxies showing CIII] emission at $2<z<4$, selected from a parent sample of $sim$750 main-sequence star-forming galaxies in the VANDELS survey. These CIII] emitters have a broad ra
Strong He II emission is produced by low-metallicity stellar populations. Here, we aim to identify and study a sample of He II $lambda 1640$-emitting galaxies at redshifts of $z sim 2.5-5$ in the deep VANDELS spectroscopic survey.. We identified a to