The SAMI galaxy survey: exploring the gas-phase mass-metallicity relation

SAMI Team

Research output: Contribution to journalArticle

Abstract

We present a detailed exploration of the stellar mass versus gas-phase metallicity relation (MZR) using integral field spectroscopy data obtained from similar to 1000 galaxies observed by the SAMI galaxy survey. 'These spatially resolved spectroscopic data allow us to determine the metallicity within the same physical scale (R-eff) for different calibrators. The shape of the MZ relations is very similar between the different calibrators, while there are large offsets in the absolute values of the abundances. We confirm our previous results derived using the spatially resolved data provided by the CALIFA and MaNGA surveys: (1) we do not find any significant secondary relation of the MZR with either the star formation rate (SFR) or the specific SFR (SFR/M.) for any of the calibrators used in this study, based on the analysis of the individual residuals; (2) if there is a dependence with the SFR, it is weaker than the reported one (r(c)similar to -0.3), it is confined to the low-mass regime (M-* <10(9) M-circle dot) or high-SFR regimes, and it does not produce any significant improvement in the description of the average population of galaxies. The aparent disagreement with published results based on single-fibre spectroscopic data could be due to (i) the interpretation of the secondary relation itself; (ii) the lower number of objects sampled at the low-mass regime by the current study; or (iii) the presence of extreme star-forming galaxies that drive the secondary relation in previous results.

Original languageEnglish
Pages (from-to)3042-3070
Number of pages29
JournalMonthly Notices of the Royal Astronomical Society
Volume484
Issue number3
DOIs
Publication statusPublished - Apr 2019

Cite this

@article{a970e208a9634ae390d684639472663b,
title = "The SAMI galaxy survey: exploring the gas-phase mass-metallicity relation",
abstract = "We present a detailed exploration of the stellar mass versus gas-phase metallicity relation (MZR) using integral field spectroscopy data obtained from similar to 1000 galaxies observed by the SAMI galaxy survey. 'These spatially resolved spectroscopic data allow us to determine the metallicity within the same physical scale (R-eff) for different calibrators. The shape of the MZ relations is very similar between the different calibrators, while there are large offsets in the absolute values of the abundances. We confirm our previous results derived using the spatially resolved data provided by the CALIFA and MaNGA surveys: (1) we do not find any significant secondary relation of the MZR with either the star formation rate (SFR) or the specific SFR (SFR/M.) for any of the calibrators used in this study, based on the analysis of the individual residuals; (2) if there is a dependence with the SFR, it is weaker than the reported one (r(c)similar to -0.3), it is confined to the low-mass regime (M-* <10(9) M-circle dot) or high-SFR regimes, and it does not produce any significant improvement in the description of the average population of galaxies. The aparent disagreement with published results based on single-fibre spectroscopic data could be due to (i) the interpretation of the secondary relation itself; (ii) the lower number of objects sampled at the low-mass regime by the current study; or (iii) the presence of extreme star-forming galaxies that drive the secondary relation in previous results.",
keywords = "techniques: spectroscopic, galaxies: abundances, galaxies: evolution, galaxies: ISM, INTEGRAL-FIELD SPECTROSCOPY, SDSS-IV MANGA, STAR-FORMING GALAXIES, ABUNDANCE GRADIENTS, DATA RELEASE, CHEMICAL ABUNDANCES, PHYSICAL-PROPERTIES, SPIRAL GALAXIES, EVOLUTION, NITROGEN",
author = "{SAMI Team} and Sanchez, {S. F.} and Barrera-Ballesteros, {J. K.} and C. Lopez-Coba and S. Brough and Bryant, {J. J.} and J. Bland-Hawthorn and Croom, {S. M.} and {van de Sande}, J. and L. Cortese and M. Goodwin and Lawrence, {J. S.} and Lopez-Sanchez, {A. R.} and Sweet, {S. M.} and Owers, {M. S.} and Richards, {S. N.} and Walcher, {C. J.}",
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pages = "3042--3070",
journal = "Monthly Notices of the Royal Astronomical Society",
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The SAMI galaxy survey : exploring the gas-phase mass-metallicity relation. / SAMI Team.

In: Monthly Notices of the Royal Astronomical Society, Vol. 484, No. 3, 04.2019, p. 3042-3070.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The SAMI galaxy survey

T2 - exploring the gas-phase mass-metallicity relation

AU - SAMI Team

AU - Sanchez, S. F.

AU - Barrera-Ballesteros, J. K.

AU - Lopez-Coba, C.

AU - Brough, S.

AU - Bryant, J. J.

AU - Bland-Hawthorn, J.

AU - Croom, S. M.

AU - van de Sande, J.

AU - Cortese, L.

AU - Goodwin, M.

AU - Lawrence, J. S.

AU - Lopez-Sanchez, A. R.

AU - Sweet, S. M.

AU - Owers, M. S.

AU - Richards, S. N.

AU - Walcher, C. J.

PY - 2019/4

Y1 - 2019/4

N2 - We present a detailed exploration of the stellar mass versus gas-phase metallicity relation (MZR) using integral field spectroscopy data obtained from similar to 1000 galaxies observed by the SAMI galaxy survey. 'These spatially resolved spectroscopic data allow us to determine the metallicity within the same physical scale (R-eff) for different calibrators. The shape of the MZ relations is very similar between the different calibrators, while there are large offsets in the absolute values of the abundances. We confirm our previous results derived using the spatially resolved data provided by the CALIFA and MaNGA surveys: (1) we do not find any significant secondary relation of the MZR with either the star formation rate (SFR) or the specific SFR (SFR/M.) for any of the calibrators used in this study, based on the analysis of the individual residuals; (2) if there is a dependence with the SFR, it is weaker than the reported one (r(c)similar to -0.3), it is confined to the low-mass regime (M-* <10(9) M-circle dot) or high-SFR regimes, and it does not produce any significant improvement in the description of the average population of galaxies. The aparent disagreement with published results based on single-fibre spectroscopic data could be due to (i) the interpretation of the secondary relation itself; (ii) the lower number of objects sampled at the low-mass regime by the current study; or (iii) the presence of extreme star-forming galaxies that drive the secondary relation in previous results.

AB - We present a detailed exploration of the stellar mass versus gas-phase metallicity relation (MZR) using integral field spectroscopy data obtained from similar to 1000 galaxies observed by the SAMI galaxy survey. 'These spatially resolved spectroscopic data allow us to determine the metallicity within the same physical scale (R-eff) for different calibrators. The shape of the MZ relations is very similar between the different calibrators, while there are large offsets in the absolute values of the abundances. We confirm our previous results derived using the spatially resolved data provided by the CALIFA and MaNGA surveys: (1) we do not find any significant secondary relation of the MZR with either the star formation rate (SFR) or the specific SFR (SFR/M.) for any of the calibrators used in this study, based on the analysis of the individual residuals; (2) if there is a dependence with the SFR, it is weaker than the reported one (r(c)similar to -0.3), it is confined to the low-mass regime (M-* <10(9) M-circle dot) or high-SFR regimes, and it does not produce any significant improvement in the description of the average population of galaxies. The aparent disagreement with published results based on single-fibre spectroscopic data could be due to (i) the interpretation of the secondary relation itself; (ii) the lower number of objects sampled at the low-mass regime by the current study; or (iii) the presence of extreme star-forming galaxies that drive the secondary relation in previous results.

KW - techniques: spectroscopic

KW - galaxies: abundances

KW - galaxies: evolution

KW - galaxies: ISM

KW - INTEGRAL-FIELD SPECTROSCOPY

KW - SDSS-IV MANGA

KW - STAR-FORMING GALAXIES

KW - ABUNDANCE GRADIENTS

KW - DATA RELEASE

KW - CHEMICAL ABUNDANCES

KW - PHYSICAL-PROPERTIES

KW - SPIRAL GALAXIES

KW - EVOLUTION

KW - NITROGEN

U2 - 10.1093/mnras/stz019

DO - 10.1093/mnras/stz019

M3 - Article

VL - 484

SP - 3042

EP - 3070

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -