Evolution of the Mass-Metallicity Relation from Redshift z ≈ 8 to the Local Universe

被引：40

作者：

Langeroodi, Danial ^{[1
]}

Hjorth, Jens ^{[1
]}

Chen, Wenlei ^{[2
]}

Kelly, Patrick L. ^{[2
]}

Williams, Hayley ^{[2
]}

Lin, Yu-Heng ^{[2
]}

Scarlata, Claudia ^{[2
]}

Zitrin, Adi ^{[3
]}

Broadhurst, Tom ^{[4
,5
,6
]}

Diego, Jose M. ^{[7
]}

Huang, Xiaosheng ^{[8
,9
]}

Filippenko, Alexei V. ^{[10
]}

Foley, Ryan J. ^{[11
]}

Jha, Saurabh ^{[12
]}

Koekemoer, Anton M. ^{[13
]}

Oguri, Masamune ^{[14
,15
]}

Perez-Fournon, Ismael ^{[16
,17
]}

Pierel, Justin ^{[13
]}

Poidevin, Frederick ^{[16
,17
]}

Strolger, Lou ^{[13
]}

机构：

[1] Univ Copenhagen, Niels Bohr Inst, DARK, Jagtvej 128, DK-2200 Copenhagen, Denmark

[2] Univ Minnesota, Minnesota Inst Astrophys, 116 Church St SE, Minneapolis, MN 55455 USA

[3] Ben Gurion Univ Negev, Phys Dept, POB 653, IL-8410501 Beer Sheva, Israel

[4] Univ Basque Country UPV EHU, Dept Phys, E-48080 Bilbao, Spain

[5] Basque Country UPV EHU, DIPC, E-48080 San Sebastian, Spain

[6] Basque Fdn Sci, Ikerbasque, E-48011 Bilbao, Spain

[7] CSIC, Inst Fis Cantabria UC, IFCA, Ave Castros S-N, E-39005 Santander, Spain

[8] Univ San Francisco, Dept Phys & Astron, San Francisco, CA 94117 USA

[9] Lawrence Berkeley Natl Lab, Phys Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA

[10] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[11] Univ Calif Santa Cruz, Dept Astron & Astrophys, UCO Lick Observ, 1156 High St, Santa Cruz, CA 95064 USA

[12] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[13] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[14] Chiba Univ, Ctr Frontier Sci, 1-33 Yayoi Cho,Inage Ku, Chiba 2638522, Japan

[15] Chiba Univ, Dept Phys, 1-33 Yayoi Cho,Inage Ku, Chiba 2638522, Japan

[16] Inst Astrofis Canarias IAC, E-38205 San Cristobal la Laguna, Tenerife, Spain

[17] Univ La Laguna ULL, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain

来源：

ASTROPHYSICAL JOURNAL | 2023年 / 957卷 / 01期

基金：

美国国家科学基金会;

关键词：

STAR-FORMING GALAXIES; EMISSION-LINE GALAXIES; LYMAN-BREAK GALAXIES; 158; MU-M; MOSDEF SURVEY; O III; VELOCITY DISTRIBUTIONS; STELLAR POPULATIONS; PHYSICAL-PROPERTIES; INTERSTELLAR-MEDIUM;

D O I：

10.3847/1538-4357/acdbc1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A tight positive correlation between the stellar mass and the gas-phase metallicity of galaxies has been observed at low redshifts. The redshift evolution of this correlation can strongly constrain theories of galaxy evolution. The advent of JWST allows probing the mass-metallicity relation at redshifts far beyond what was previously accessible. Here we report the discovery of two emission line galaxies at redshifts 8.15 and 8.16 in JWST NIRCam imaging and NIRSpec spectroscopy of targets gravitationally lensed by the cluster RX J2129.4+0005. We measure their metallicities and stellar masses along with nine additional galaxies at 7.2 < z(spec) < 9.5 to report the first quantitative statistical inference of the mass-metallicity relation at z approximate to 8. We measure similar to 0.9 dex evolution in the normalization of the mass-metallicity relation from z approximate to 8 to the local universe; at a fixed stellar mass, galaxies are 8 times less metal enriched at z approximate to 8 compared to the present day. Our inferred normalization is in agreement with the predictions of FIRE simulations. Our inferred slope of the mass-metallicity relation is similar to or slightly shallower than that predicted by FIRE or observed at lower redshifts. We compare the z approximate to 8 galaxies to extremely low-metallicity analog candidates in the local universe, finding that they are generally distinct from extreme emission line galaxies or "green peas," but are similar in strong emission line ratios and metallicities to "blueberry galaxies." Despite this similarity, at a fixed stellar mass, the z approximate to 8 galaxies have systematically lower metallicities compared to blueberry galaxies.

引用

页数：23

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