UNCOVER NIRSpec/PRISM Spectroscopy Unveils Evidence of Early Core Formation in a Massive, Centrally Dusty Quiescent Galaxy at z spec=3.97

被引：12

作者：

Setton, David J. ^{[1
]}

Khullar, Gourav ^{[2
,3
]}

Miller, Tim B. ^{[4
]}

Bezanson, Rachel ^{[2
,3
]}

Greene, Jenny E. ^{[1
]}

Suess, Katherine A. ^{[5
,6
]}

Whitaker, Katherine E. ^{[7
,8
]}

Antwi-Danso, Jacqueline ^{[7
,9
,10
]}

Atek, Hakim ^{[11
]}

Brammer, Gabriel ^{[12
]}

Cutler, Sam E. ^{[7
]}

Dayal, Pratika ^{[13
]}

Feldmann, Robert ^{[14
]}

Fujimoto, Seiji ^{[15
]}

Furtak, Lukas J. ^{[16
]}

Glazebrook, Karl ^{[17
]}

Goulding, Andy D. ^{[1
]}

Kokorev, Vasily ^{[13
]}

Labbe, Ivo ^{[17
]}

Leja, Joel ^{[18
,19
,20
]}

Ma, Yilun ^{[1
]}

Marchesini, Danilo ^{[21
]}

Nanayakkara, Themiya ^{[17
]}

Pan, Richard ^{[21
]}

Price, Sedona H. ^{[2
,3
]}

Siegel, Jared C. ^{[1
]}

Shipley, Heath ^{[22
]}

Weaver, John R. ^{[7
]}

van Dokkum, Pieter ^{[23
]}

Wang, Bingjie ^{[18
,19
,20
]}

Williams, Christina C. ^{[24
]}

机构：

[1] Princeton Univ, Dept Astrophys Sci, 4 Ivy Lane, Princeton, NJ 08544 USA

[2] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA USA

[3] Univ Pittsburgh, PITT PACC, Pittsburgh, PA 15260 USA

[4] Northwestern Univ, Ctr Interdisciplinary Explorat & Res Astrophys CIE, 1800 Sherman Ave,USA4, Evanston, IL 60201 USA

[5] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA

[6] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[7] Univ Massachusetts, Dept Astron, Amherst, MA USA

[8] Cosm Dawn Ctr DAWN, Copenhagen, Denmark

[9] Univ Toronto, Toronto, ON M5S 3H4, Canada

[10] Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON, Canada

[11] Sorbonne Univ, Inst Astrophys Paris, CNRS, 98bis Blvd Arago, Paris, France

[12] Univ Copenhagen, Niels Bohr Inst, Cosm Dawn Ctr DAWN, Jagtvej 128, Copenhagen, Denmark

[13] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands

[14] Univ Zurich, Dept Astrophys, Winterthurerstr 190, CH-8057 Zurich, Switzerland

[15] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

[16] Ben Gurion Univ Negev, Bengur Res Inst Study Israel, POB 653, IL-84105 Beer Sheva, Israel

[17] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Melbourne, Vic 3122, Australia

[18] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[19] Penn State Univ, Inst Computat & Data Sci, University Pk, PA USA

[20] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[21] Tufts Univ, Dept Phys & Astron, Medford, MA 02155 USA

[22] Texas State Univ, Dept Phys, San Marcos, TX 78666 USA

[23] Yale Univ, Dept Astron, New Haven, CT 06511 USA

[24] NSF's Natl Opt Infrared Astron Res Lab, 950 North Cherry Ave, Tucson, AZ 85719 USA

来源：

ASTROPHYSICAL JOURNAL | 2024年 / 974卷 / 01期

基金：

荷兰研究理事会; 美国国家科学基金会; 新加坡国家研究基金会; 澳大利亚研究理事会;

关键词：

STAR-FORMATION HISTORIES; HUBBLE-SPACE-TELESCOPE; SIMILAR-TO; 3; RECENTLY QUENCHED GALAXIES; MOLECULAR GAS-RESERVOIRS; POST-STARBURST GALAXIES; PLUS JWST CATALOG; LESS-THAN; STELLAR POPULATION; SIZE-MASS;

D O I：

10.3847/1538-4357/ad6a18

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the spectroscopic confirmation of a massive (log(M star/M circle dot)=10.34 +/- 0.070.06), Hubble Space Telescope-dark (m(F150W) - m(F444W) = 3.6) quiescent galaxy at z(spec) = 3.97 in the UNCOVER survey. NIRSpec/PRISM spectroscopy and a nondetection in deep Atacama Large Millimeter/submillimeter Array imaging surprisingly reveals that the galaxy is consistent with a low (<10 M-circle dot yr(-1)) star formation rate (SFR) despite evidence for moderate dust attenuation. The F444W image is well modeled with a two-component S & eacute;rsic fit that favors a compact, r(e) similar to 200 pc, n similar to 2.9 component and a more extended, r(e) similar to 1.6 kpc, n similar to 1.7 component. The galaxy exhibits strong color gradients: the inner regions are significantly redder than the outskirts. Spectral energy distribution models that reproduce both the red colors and low SFR in the center of UNCOVER 18407 require both significant (A(v) similar to 1.4 mag) dust attenuation and a stellar mass-weighted age of 900 Myr, implying 50% of the stars in the core already formed by z = 7.5. Using spatially resolved annular mass-to-light measurements enabled by the galaxy's moderate magnification (mu=2.12 +/- 0.010.05) to reconstruct a radial mass profile from the best-fitting two-component S & eacute;rsic model, we infer a total mass-weighted reff=0.74 +/- 0.170.22 kpc and log (Sigma 1 kpc [M circle dot kpc-2])=9.65 +/- 0.150.12. The early formation of a dense, low SFR, and dusty core embedded in a less attenuated stellar envelope suggests an evolutionary link between the earliest-forming massive galaxies and their elliptical descendants. Furthermore, the disparity between the global, integrated dust properties and the spatially resolved gradients highlights the importance of accounting for radially varying stellar populations when characterizing the early growth of galaxy structure.

引用

页数：16

共 1 条

[1] 3D Spectroscopy Unveils Massive Galaxy Formation Modes at High-z
Buitrago, F.
Conselice, C. J.
Epinat, B.
Bedregal, A. G.
Trujillo, I.
Gruetzbauch, R.
ENVIRONMENT AND THE FORMATION OF GALAXIES: 30 YEARS LATER: PROCEEDINGS OF SYMPOSIUM 2 OF JENAM 2010, 2011, : 163 - +

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