The NIRVANDELS Survey: A robust detection of α-enhancement in star-forming galaxies at z ≃3.4

Amorín, R; Begley, R; Bolzonella, M; Calabrò, A; Carnall, AC; Castellano, M; Cimatti, A; Cirasuolo, M; Cresci, G; Cullen, F; Dunlop, JS; Fontana, A; Fontanot, F; Garilli, B; Guaita, L; Hamadouche, M; Hathi, NP; Mannucci, F; McLeod, DJ; McLure, RJ; Pentericci, L; Reddy, NA; Sanders, RL; Saxena, A; Shapley, AE; Talia, M; Topping, MW; Zamorani, G

The NIRVANDELS Survey: A robust detection of α-enhancement in star-forming galaxies at z ≃3.4

Authors: R Amorín
R Begley
M Bolzonella
A Calabrò
AC Carnall
M Castellano
A Cimatti
M Cirasuolo
G Cresci
F Cullen
JS Dunlop
A Fontana
F Fontanot
B Garilli
L Guaita
M Hamadouche
NP Hathi
F Mannucci
DJ McLeod
RJ McLure
L Pentericci
NA Reddy
RL Sanders
A Saxena
AE Shapley
M Talia
MW Topping
G Zamorani
Publication date: 1 July 2021
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Abstract

We present results from the NIRVANDELS survey on the gas-phase metallicity (Zg, tracing O/H) and stellar metallicity (Z∗, tracing Fe/H) of 33 star-forming galaxies at redshifts 2.95 3, finding (O/Fe) = 2.54 ± 0.38 × (O/Fe)⊙, with no clear dependence on M∗

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