Early Results from GLASS-JWST. V: The First Rest-frame Optical Size-Luminosity Relation of Galaxies at z > 7

被引：59

作者：

Yang, L. ^{[1
]}

Morishita, T. ^{[2
]}

Leethochawalit, N. ^{[3
,4
,5
]}

Castellano, M. ^{[6
]}

Calabro, A. ^{[6
]}

Treu, T. ^{[7
]}

Bonchi, A. ^{[6
,8
]}

Fontana, A. ^{[6
]}

Mason, C. ^{[9
,10
]}

Merlin, E. ^{[6
]}

Paris, D. ^{[6
]}

Trenti, M. ^{[3
,4
]}

Roberts-Borsani, G. ^{[7
]}

Bradac, M. ^{[11
,12
]}

Vanzella, E. ^{[13
]}

Vulcani, B. ^{[14
]}

Marchesini, D. ^{[15
]}

Ding, X. ^{[1
]}

Nanayakkara, T. ^{[16
]}

Birrer, S. ^{[17
,18
,19
,20
]}

Glazebrook, K. ^{[16
]}

Jones, T. ^{[12
]}

Boyett, K. ^{[3
,4
]}

Santini, P. ^{[21
]}

Strait, V ^{[9
,10
]}

Wang, X. ^{[2
]}

机构：

[1] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan

[2] CALTECH, Infrared Proc & Anal Ctr, 1200 E Calif Blvd, Pasadena, CA 91125 USA

[3] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia

[4] ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Canberra, ACT, Australia

[5] Natl Astron Res Inst Thailand NARIT, Chiang Mai 50180, Thailand

[6] INAF Osservatorio Astron Roma, Via Frascati 33, I-00078 Rome, Italy

[7] Univ Calif Los Angeles, Dept Phys & Astron, 430 Portola Plaza, Los Angeles, CA 90095 USA

[8] ASI Space Sci Data Ctr, Via Politecn, I-00133 Rome, Italy

[9] Cosm Dawn Ctr DAWN, Copenhagen, Denmark

[10] Univ Copenhagen, Niels Bohr Inst, Jagtvej 128, DK-2200 Copenhagen N, Denmark

[11] Univ Ljubljana, Dept Math & Phys, Jadranska Ul 19, SI-1000 Ljubljana, Slovenia

[12] Univ Calif Davis, Dept Phys & Astron, 1 Shields Ave, Davis, CA 95616 USA

[13] Osservatorio Astrofis & Sci Spazio Bologna, INAF OAS, Via Gobetti 93-3, I-40129 Bologna, Italy

[14] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

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

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

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

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

[19] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[20] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[21] INAF Osservatorio Astron Roma, Via Frascati 33, I-00078 Monte Porzio Catone, Italy

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2022年 / 938卷 / 02期

基金：

澳大利亚研究理事会; 新加坡国家研究基金会;

关键词：

Galaxy evolution; EVOLUTION; IV;

D O I：

10.3847/2041-8213/ac8803

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first rest-frame optical size-luminosity relation of galaxies at z > 7, using the NIRCam imaging data obtained by the GLASS James Webb Space Telescope Early Release Science (GLASS-JWST-ERS) program, providing the deepest extragalactic data of the ERS campaign. Our sample consists of 19 photometrically selected bright galaxies with m (F444W) <= 27.8 at 7 < z < 9 and m (F444W) < 28.2 at z similar to 9-15. We measure the size of the galaxies in five bands, from rest-frame optical (similar to 4800 angstrom) to the UV (similar to 1600 angstrom) based on the Sersic model, and analyse the size-luminosity relation as a function of wavelength. Remarkably, the data quality of the NIRCam imaging is sufficient to probe the half-light radius r (e) down to similar to 100 pc at z > 7. Given the limited sample size and magnitude range, we first fix the slope to that observed for larger samples in rest-frame UV using Hubble Space Telescope samples. The median size r (0) at the reference luminosity M = -21 decreases slightly from rest-frame optical (600 +/- 80 pc) to UV (450 +/- 130 pc). We then refit the size-luminosity relation allowing the slope to vary. The slope is consistent with beta similar to 0.2 for all bands except F150W, where we find a marginally steeper slope of beta = 0.53 +/- 0.15. The steep UV slope is mainly driven by the smallest and faintest galaxies. If confirmed by larger samples, it implies that the UV size-luminosity relation breaks toward the faint end, as suggested by lensing studies.

引用

页数：7

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Early Results from GLASS-JWST. V: The First Rest-frame Optical Size-Luminosity Relation of Galaxies at z &gt; 7

Early Results from GLASS-JWST. V: The First Rest-frame Optical Size-Luminosity Relation of Galaxies at z > 7