EPOCHS. II. the ultraviolet luminosity dunction from 7.5 < z < 13.5 using 180 arcmin² of deep, blank fields from the PEARLS survey and public JWST data

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DOI	Resolve DOI: https://doi.org/10.3847/1538-4357/ad2a7b
Author	Search for: Adams, Nathan J.ORCID identifier: https://orcid.org/0000-0003-4875-6272; Search for: Conselice, Christopher J.ORCID identifier: https://orcid.org/0000-0003-1949-7638; Search for: Austin, Duncan ORCID identifier: https://orcid.org/0000-0003-0519-9445; Search for: Harvey, Thomas ORCID identifier: https://orcid.org/0000-0002-4130-636X; Search for: Ferreira, Leonardo ORCID identifier: https://orcid.org/0000-0002-8919-079X; Search for: Trussler, James ORCID identifier: https://orcid.org/0000-0002-9081-2111; Search for: Juodžbalis, Ignas ORCID identifier: https://orcid.org/0009-0003-7423-8660; Search for: Li, Qiong ORCID identifier: https://orcid.org/0000-0002-3119-9003; Search for: Windhorst, Rogier ORCID identifier: https://orcid.org/0000-0001-8156-6281; Search for: Cohen, Seth H.ORCID identifier: https://orcid.org/0000-0003-3329-1337; Search for: Jansen, Rolf A.ORCID identifier: https://orcid.org/0000-0003-1268-5230; Search for: Summers, Jake ORCID identifier: https://orcid.org/0000-0002-7265-7920; Search for: Tompkins, Scott ORCID identifier: https://orcid.org/0000-0001-9052-9837; Search for: Driver, Simon P.ORCID identifier: https://orcid.org/0000-0001-9491-7327; Search for: Robotham, Aaron ORCID identifier: https://orcid.org/0000-0003-0429-3579; Search for: D’Silva, Jordan C. J.; Search for: Yan, Haojing ORCID identifier: https://orcid.org/0000-0001-7592-7714; Search for: Coe, Dan ORCID identifier: https://orcid.org/0000-0001-7410-7669; Search for: Frye, Brenda ORCID identifier: https://orcid.org/0000-0003-1625-8009; Search for: Grogin, Norman A.ORCID identifier: https://orcid.org/0000-0001-9440-8872; Search for: Koekemoer, Anton M.ORCID identifier: https://orcid.org/0000-0002-6610-2048; Search for: Marshall, Madeline A.¹ORCID identifier: https://orcid.org/0000-0001-6434-7845; Search for: Pirzkal, Nor ORCID identifier: https://orcid.org/0000-0003-3382-5941; Search for: Ryan, Russell E.ORCID identifier: https://orcid.org/0000-0003-0894-1588; Search for: Maksym, W. Peter ORCID identifier: https://orcid.org/0000-0002-2203-7889; Search for: Rutkowski, Michael J.ORCID identifier: https://orcid.org/0000-0001-7016-5220; Search for: Willmer, Christopher N. A.ORCID identifier: https://orcid.org/0000-0001-9262-9997; Search for: Hammel, Heidi B.; Search for: Nonino, Mario ORCID identifier: https://orcid.org/0000-0001-6342-9662; Search for: Bhatawdekar, Rachana ORCID identifier: https://orcid.org/0000-0003-0883-2226; Search for: Wilkins, Stephen M.ORCID identifier: https://orcid.org/0000-0003-3903-6935; Search for: Bradley, Larry D.ORCID identifier: https://orcid.org/0000-0002-7908-9284; Search for: Broadhurst, Tom ORCID identifier: https://orcid.org/0000-0002-8785-8979; Search for: Cheng, Cheng ORCID identifier: https://orcid.org/0000-0003-0202-0534; Search for: Dole, Hervé ORCID identifier: https://orcid.org/0000-0002-9767-3839; Search for: Hathi, Nimish P.ORCID identifier: https://orcid.org/0000-0001-6145-5090; Search for: Zitrin, Adi ORCID identifier: https://orcid.org/0000-0002-0350-4488
Affiliation	National Research Council of Canada. Herzberg Astronomy and Astrophysics
Funder	Search for: European Research Council
Format	Text, Article
Subject	high-redshift galaxies; Lyman-break galaxies; galaxy photometry; luminosity function; reionization
Abstract	We present an analysis of the ultraviolet luminosity function (UV LF) and star formation rate density of distant galaxies (7.5 < z < 13.5) in the "blank" fields of the Prime Extragalactic Areas for Reionization and Lensing Science (PEARLS) survey combined with Early Release Science data from the CEERS, GLASS, and NGDEEP surveys/fields and the first data release of JADES. We use strict quality cuts on EAZY photometric redshifts to obtain a reliable selection and characterization of high-redshift (z > 6.5) galaxies from a consistently processed set of deep, near-infrared imaging. Within an area of 180 arcmin², we identify 1046 candidate galaxies at redshifts z > 6.5 and we use this sample to study the UV LF in four redshift bins between 7.5 < z < 13.5. The measured number density of galaxies at z = 8 and z = 9 matches those of past observations undertaken by the Hubble Space Telescope (HST). Our z = 10.5 measurements lie between early James Webb Space Telescope (JWST) results and past HST results, indicating cosmic variance may be the cause of previous high density measurements. However, the number densities of UV-luminous galaxies at z = 12.5 are high compared to predictions from simulations. When examining the star formation rate density of galaxies at this period, our observations are still largely consistent with a constant star formation efficiency, are slightly lower than previous early estimations using JWST, and support galaxy driven reionization at z ≤ 8.
Publication date	2024-04-27
Publisher	American Astronomical Society
Licence	Creative Commons, Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
In	The Astrophysical Journal 965, no. 2, 169 (27 April 2024): 1–21.
Language	English
Peer reviewed	Yes
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Record identifier	9b3fd3a1-9e20-43f1-8803-f38301138131
Record created	2024-09-16
Record modified	2024-09-16

Date modified:: 2025-06-20