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

F. Cullen; A. E. Shapley; R. J. McLure; J. S. Dunlop; R. L. Sanders; M. W. Topping; N. A. Reddy; R. Amorín; R. Begley; M. Bolzonella; A. Calabrò; A. C. Carnall; M. Castellano; A. Cimatti; M. Cirasuolo; G. Cresci; A. Fontana; F. Fontanot; B. Garilli; L. Guaita; M. Hamadouche; N. P. Hathi; F. Mannucci; D. J. McLeod; L. Pentericci; A. Saxena; M. Talia; G. Zamorani

doi:10.1093/mnras/stab1340

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

F. Cullen, A. E. Shapley, R. J. McLure, J. S. Dunlop, R. L. Sanders, M. W. Topping, N. A. Reddy, R. Amorín, R. Begley, M. Bolzonella, A. Calabrò, A. C. Carnall, M. Castellano, A. Cimatti, M. Cirasuolo, G. Cresci, A. Fontana, F. Fontanot, B. Garilli, L. GuaitaM. Hamadouche, N. P. Hathi, F. Mannucci, D. J. McLeod, L. Pentericci, A. Saxena, M. Talia, G. Zamorani

Physics And Astronomy

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51 Scopus citations

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 < z < 3.80. Based on a combined analysis of deep optical and near-IR spectra, tracing the rest-frame far-ultraviolet (FUV; 1200-2000 Å) and rest-frame optical (3400-5500 Å), respectively, we present the first simultaneous determination of the stellar and gas-phase mass-metallicity relationships (MZRs) at z ≃ 3.4. In both cases, we find that metallicity increases with increasing stellar mass (M∗) and that the power-law slope at M∗ ≤ 1010M⊙ of both MZRs scales as Z ∝ M∗0.3. Comparing the stellar and gas-phase MZRs, we present direct evidence for super-solar O/Fe ratios (i.e. α-enhancement) at z > 3, finding (O/Fe) = 2.54 ± 0.38 × (O/Fe)⊙, with no clear dependence on M∗.

Original language	English
Pages (from-to)	903-920
Number of pages	18
Journal	Monthly Notices of the Royal Astronomical Society
Volume	505
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stab1340
State	Published - Jul 1 2021

Bibliographical note

Publisher Copyright:
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.

Funding

UK Science and Technology Facilities Council, 20173ML3WW 001 PRIN MIUR 2017, 1202007 ANID Fondecyt

Funders	Funder number
ANID Fondecyt
Science and Technology Facilities Council	20173ML3WW 001 PRIN MIUR 2017

Keywords

Galaxies: abundances
Galaxies: high redshift

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1093/mnras/stab1340

Cite this

Cullen, F., Shapley, A. E., McLure, R. J., Dunlop, J. S., Sanders, R. L., Topping, M. W., Reddy, N. A., Amorín, R., Begley, R., Bolzonella, M., Calabrò, A., Carnall, A. C., Castellano, M., Cimatti, A., Cirasuolo, M., Cresci, G., Fontana, A., Fontanot, F., Garilli, B., ... Zamorani, G. (2021). The NIRVANDELS Survey: A robust detection of α-enhancement in star-forming galaxies at z ≃3.4. Monthly Notices of the Royal Astronomical Society, 505(1), 903-920. https://doi.org/10.1093/mnras/stab1340

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

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 < z < 3.80. Based on a combined analysis of deep optical and near-IR spectra, tracing the rest-frame far-ultraviolet (FUV; 1200-2000 {\AA}) and rest-frame optical (3400-5500 {\AA}), respectively, we present the first simultaneous determination of the stellar and gas-phase mass-metallicity relationships (MZRs) at z ≃ 3.4. In both cases, we find that metallicity increases with increasing stellar mass (M∗) and that the power-law slope at M∗ ≤ 1010M⊙ of both MZRs scales as Z ∝ M∗0.3. Comparing the stellar and gas-phase MZRs, we present direct evidence for super-solar O/Fe ratios (i.e. α-enhancement) at z > 3, finding (O/Fe) = 2.54 ± 0.38 × (O/Fe)⊙, with no clear dependence on M∗.",

keywords = "Galaxies: abundances, Galaxies: high redshift",

author = "F. Cullen and Shapley, {A. E.} and McLure, {R. J.} and Dunlop, {J. S.} and Sanders, {R. L.} and Topping, {M. W.} and Reddy, {N. A.} and R. Amor{\'i}n and R. Begley and M. Bolzonella and A. Calabr{\`o} and Carnall, {A. C.} and M. Castellano and A. Cimatti and M. Cirasuolo and G. Cresci and A. Fontana and F. Fontanot and B. Garilli and L. Guaita and M. Hamadouche and Hathi, {N. P.} and F. Mannucci and McLeod, {D. J.} and L. Pentericci and A. Saxena and M. Talia and G. Zamorani",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2021",

month = jul,

day = "1",

doi = "10.1093/mnras/stab1340",

language = "English",

volume = "505",

pages = "903--920",

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Cullen, F, Shapley, AE, McLure, RJ, Dunlop, JS, Sanders, RL, Topping, MW, Reddy, NA, Amorín, R, Begley, R, Bolzonella, M, Calabrò, A, Carnall, AC, Castellano, M, Cimatti, A, Cirasuolo, M, Cresci, G, Fontana, A, Fontanot, F, Garilli, B, Guaita, L, Hamadouche, M, Hathi, NP, Mannucci, F, McLeod, DJ, Pentericci, L, Saxena, A, Talia, M & Zamorani, G 2021, 'The NIRVANDELS Survey: A robust detection of α-enhancement in star-forming galaxies at z ≃3.4', Monthly Notices of the Royal Astronomical Society, vol. 505, no. 1, pp. 903-920. https://doi.org/10.1093/mnras/stab1340

TY - JOUR

T1 - The NIRVANDELS Survey

T2 - A robust detection of α-enhancement in star-forming galaxies at z ≃3.4

AU - Cullen, F.

AU - Shapley, A. E.

AU - McLure, R. J.

AU - Dunlop, J. S.

AU - Sanders, R. L.

AU - Topping, M. W.

AU - Reddy, N. A.

AU - Amorín, R.

AU - Begley, R.

AU - Bolzonella, M.

AU - Calabrò, A.

AU - Carnall, A. C.

AU - Castellano, M.

AU - Cimatti, A.

AU - Cirasuolo, M.

AU - Cresci, G.

AU - Fontana, A.

AU - Fontanot, F.

AU - Garilli, B.

AU - Guaita, L.

AU - Hamadouche, M.

AU - Hathi, N. P.

AU - Mannucci, F.

AU - McLeod, D. J.

AU - Pentericci, L.

AU - Saxena, A.

AU - Talia, M.

AU - Zamorani, G.

PY - 2021/7/1

Y1 - 2021/7/1

N2 - 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 < z < 3.80. Based on a combined analysis of deep optical and near-IR spectra, tracing the rest-frame far-ultraviolet (FUV; 1200-2000 Å) and rest-frame optical (3400-5500 Å), respectively, we present the first simultaneous determination of the stellar and gas-phase mass-metallicity relationships (MZRs) at z ≃ 3.4. In both cases, we find that metallicity increases with increasing stellar mass (M∗) and that the power-law slope at M∗ ≤ 1010M⊙ of both MZRs scales as Z ∝ M∗0.3. Comparing the stellar and gas-phase MZRs, we present direct evidence for super-solar O/Fe ratios (i.e. α-enhancement) at z > 3, finding (O/Fe) = 2.54 ± 0.38 × (O/Fe)⊙, with no clear dependence on M∗.

AB - 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 < z < 3.80. Based on a combined analysis of deep optical and near-IR spectra, tracing the rest-frame far-ultraviolet (FUV; 1200-2000 Å) and rest-frame optical (3400-5500 Å), respectively, we present the first simultaneous determination of the stellar and gas-phase mass-metallicity relationships (MZRs) at z ≃ 3.4. In both cases, we find that metallicity increases with increasing stellar mass (M∗) and that the power-law slope at M∗ ≤ 1010M⊙ of both MZRs scales as Z ∝ M∗0.3. Comparing the stellar and gas-phase MZRs, we present direct evidence for super-solar O/Fe ratios (i.e. α-enhancement) at z > 3, finding (O/Fe) = 2.54 ± 0.38 × (O/Fe)⊙, with no clear dependence on M∗.

KW - Galaxies: abundances

KW - Galaxies: high redshift

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UR - http://www.scopus.com/inward/citedby.url?scp=85108175008&partnerID=8YFLogxK

U2 - 10.1093/mnras/stab1340

DO - 10.1093/mnras/stab1340

M3 - Article

AN - SCOPUS:85108175008

SN - 0035-8711

VL - 505

SP - 903

EP - 920

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

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

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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