A population of faint, old, and massive quiescent galaxies at 3 < z < 4 revealed by JWST NIRSpec Spectroscopy

被引：0

作者：

Nanayakkara, Themiya ^{[1
]}

Glazebrook, Karl ^{[1
]}

Jacobs, Colin ^{[1
]}

Kawinwanichakij, Lalitwadee ^{[1
]}

Schreiber, Corentin ^{[2
]}

Brammer, Gabriel ^{[3
]}

Esdaile, James ^{[1
]}

Kacprzak, Glenn G. ^{[1
]}

Labbe, Ivo ^{[1
]}

Lagos, Claudia ^{[3
,11
,12
]}

Marchesini, Danilo ^{[4
]}

Marsan, Z. Cemile ^{[5
]}

Oesch, Pascal A. ^{[3
,6
]}

Papovich, Casey ^{[7
,8
]}

Remus, Rhea-Silvia ^{[9
]}

Tran, Kim-Vy H. ^{[10
,11
,13
]}

机构：

[1] Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia

[2] IBEX Innovat Ltd, Sedgefield TS21 3FF, Stockton On Tee, England

[3] Univ Copenhagen, Cosm DAWN Ctr, Niels Bohr Inst, Jagtvej 128, DK-2200 Copenhagen, Denmark

[4] Tufts Univ, Phys & Astron Dept, 574 Boston Ave, Medford, MA 02155 USA

[5] York Univ, Dept Phys & Astron, 4700 Keele St, Toronto, ON M3J 1P3, Canada

[6] Univ Geneva, Dept Astron, Chemin Pegasi 51, CH-1290 Versoix, Switzerland

[7] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA

[8] Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 USA

[9] Univ Observ Munich, Ludwig Maximilians Univ, Fac Phys, Scheinerstr 1, D-81679 Munich, Germany

[10] Univ New South Wales, Sch Phys, Kensington, NSW, Australia

[11] ARC Ctr Excellence All Sky Astrophys 3D ASTRO3D, Canberra, ACT, Australia

[12] Univ Western Australia, Int Ctr Radio Astron Res, 7 Fairway, Crawley, WA 6009, Australia

[13] Harvard & Smithsonian, Ctr Astrophys, Cambridge, MA USA

来源：

SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期

基金：

新加坡国家研究基金会; 澳大利亚研究理事会; 瑞士国家科学基金会;

关键词：

STAR-FORMATION; STELLAR POPULATION; REDSHIFT; SELECTION; SPECTRA; IMPACT;

D O I：

10.1038/s41598-024-52585-4

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Here we present a sample of 12 massive quiescent galaxy candidates at z similar to 3-4 observed with the James Webb Space Telescope (JWST) Near Infrared Spectrograph (NIRSpec). These galaxies were pre-selected from the Hubble Space Telescope imaging and 10 of our sources were unable to be spectroscopically confirmed by ground based spectroscopy. By combining spectroscopic data from NIRSpec with multi-wavelength imaging data from the JWST Near Infrared Camera (NIRCam), we analyse their stellar populations and their formation histories. We find that all of our galaxies classify as quiescent based on the reconstruction of their star formation histories but show a variety of quenching timescales and ages. All our galaxies are massive (similar to 0.1-1.2x10(11 )M(circle dot)), with masses comparable to massive galaxies in the local Universe. We find that the oldest galaxy in our sample formed similar to 1.0x10(11) M-circle dot of mass within the first few hundred million years of the Universe and has been quenched for more than a billion years by the time of observation at z similar to 3.2 (similar to 2 billion years after the Big Bang). Our results point to very early formation of massive galaxies requiring a high conversion rate of baryons to stars in the early Universe.

引用

页数：14

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A population of faint, old, and massive quiescent galaxies at 3 &lt; z &lt; 4 revealed by JWST NIRSpec Spectroscopy

A population of faint, old, and massive quiescent galaxies at 3 < z < 4 revealed by JWST NIRSpec Spectroscopy