Early Results from GLASS-JWST. III. Galaxy Candidates at z ∼9-15*

被引：240

作者：

Castellano, Marco ^{[1
]}

Fontana, Adriano ^{[1
]}

Treu, Tommaso ^{[2
]}

Santini, Paola ^{[1
]}

Merlin, Emiliano ^{[1
]}

Leethochawalit, Nicha ^{[3
,4
,5
]}

Trenti, Michele ^{[3
,4
]}

Vanzella, Eros ^{[6
]}

Mestric, Uros ^{[6
]}

Bonchi, Andrea ^{[7
]}

Belfiori, Davide ^{[1
]}

Nonino, Mario ^{[8
]}

Paris, Diego ^{[1
]}

Polenta, Gianluca ^{[7
]}

Roberts-Borsani, Guido ^{[2
]}

Boyett, Kristan ^{[3
,4
]}

Bradac, Marusa ^{[9
,10
]}

Calabro, Antonello ^{[1
]}

Glazebrook, Karl ^{[11
]}

Grillo, Claudio ^{[12
,13
]}

Mascia, Sara ^{[1
]}

Mason, Charlotte ^{[14
,15
]}

Mercurio, Amata ^{[16
]}

Morishita, Takahiro ^{[17
]}

Nanayakkara, Themiya ^{[11
]}

Pentericci, Laura ^{[1
]}

Rosati, Piero ^{[18
,19
]}

Vulcani, Benedetta ^{[20
]}

Wang, Xin ^{[21
]}

Yang, Lilan ^{[22
]}

机构：

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

[2] Univ Calif Los Angeles, Dept Phys & Astron, 430 Portola Plaza, Los Angeles, CA 90095 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] Osseatorio Astrofis & Sci Spazio Bologna, INAF OAS, Via Gobetti 93-3, I-40129 Bologna, Italy

[7] Italian Space Agcy, Space Sci Data Ctr, Via Politecn, I-00133 Rome, Italy

[8] INAF Osservatorio Astron Trieste, Via Tiepolo 11, I-34131 Trieste, Italy

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

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

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

[12] Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy

[13] INAFIASF Milano, Via A Corti 12, I-20133 Milan, Italy

[14] Cosm Dawn Ctr DAWN, Copenhagen, Denmark

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

[16] INAF Osservatorio Astron Capodimonte, Via Moiariello 16, I-80131 Naples, Italy

[17] CALTECH, IPAC, MC 314-6,1200 E Calif Blvd, Pasadena, CA 91125 USA

[18] Univ Ferrara, Dipartimento Fis & Sci Terra, Via Saragat 1, I-44122 Ferrara, Italy

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

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

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

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

来源：

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

基金：

新加坡国家研究基金会; 澳大利亚研究理事会;

关键词：

HUBBLE FRONTIER FIELDS; UV LUMINOSITY FUNCTION; HIGH-REDSHIFT GALAXIES; PHOTOMETRIC REDSHIFTS; STAR-FORMATION; FAINT-END; T-PHOT; I; EVOLUTION; POPULATION;

D O I：

10.3847/2041-8213/ac94d0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of a first search for galaxy candidates at z similar to 9-15 on deep seven-band NIRCam imaging acquired as part of the GLASS-James Webb Space Telescope (JWST) Early Release Science Program on a flanking field of the Frontier Fields cluster A2744. Candidates are selected via two different renditions of the Lyman-break technique, isolating objects at z similar to 9-11, and z similar to 9-15, respectively, supplemented by photometric redshifts obtained with two independent codes. We find five color-selected candidates at z > 9, plus one additional candidate with photometric redshift z (phot) >= 9. In particular, we identify two bright candidates at M (UV) similar or equal to -21 that are unambiguously placed at z similar or equal to 10.6 and z similar or equal to 12.2, respectively. The total number of galaxies discovered at z > 9 is in line with the predictions of a nonevolving luminosity function. The two bright ones at z > 10 are unexpected given the survey volume, although cosmic variance and small number statistics limits general conclusions. This first search demonstrates the unique power of JWST to discover galaxies at the high-redshift frontier. The candidates are ideal targets for spectroscopic follow-up in Cycle-2.

引用

页数：9

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