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Life beyond 30: Probing the −20 < M UV < −17 Luminosity Function at 8 < z < 13 with the NIRCam Parallel Field of the MIRI Deep Survey

Pérez-González, Pablo G.; Costantin, Luca; Langeroodi, Danial; Rinaldi, Pierluigi; Annunziatella, Marianna; Ilbert, Olivier; Colina, Luis; Nørgaard-Nielsen, Hans Ulrik; Greve, Thomas R.; Östlin, Göran; Wright, Gillian; Alonso-Herrero, Almudena; Álvarez-Márquez, Javier; Caputi, Karina I.; Eckart, Andreas; Le Fèvre, Olivier; Labiano, Álvaro; García-Marín, Macarena; Hjorth, Jens; Kendrew, Sarah; Pye, John P.; Tikkanen, Tuomo; van der Werf, Paul; Walter, Fabian; Ward, Martin; Bik, Arjan; Boogaard, Leindert; Bosman, Sarah E. I.; Gómez, Alejandro Crespo; Gillman, Steven; Iani, Edoardo; Jermann, Iris; Melinder, Jens; Meyer, Romain A.; Moutard, Thibaud; van Dishoek, Ewine; Henning, Thomas; Lagage, Pierre-Olivier; Guedel, Manuel; Peissker, Florian; Ray, Tom; Vandenbussche, Bart; García-Argumánez, Ángela; María Mérida, Rosa

Life beyond 30: Probing the −20 < M  UV < −17 Luminosity Function at 8 < z < 13 with the NIRCam Parallel Field of the MIRI Deep Survey Thumbnail


Pablo G. Pérez-González

Luca Costantin

Danial Langeroodi

Pierluigi Rinaldi

Marianna Annunziatella

Olivier Ilbert

Luis Colina

Hans Ulrik Nørgaard-Nielsen

Thomas R. Greve

Göran Östlin

Gillian Wright

Almudena Alonso-Herrero

Javier Álvarez-Márquez

Karina I. Caputi

Andreas Eckart

Olivier Le Fèvre

Álvaro Labiano

Macarena García-Marín

Jens Hjorth

Sarah Kendrew

John P. Pye

Tuomo Tikkanen

Paul van der Werf

Fabian Walter

Arjan Bik

Leindert Boogaard

Sarah E. I. Bosman

Alejandro Crespo Gómez

Steven Gillman

Edoardo Iani

Iris Jermann

Jens Melinder

Romain A. Meyer

Thibaud Moutard

Ewine van Dishoek

Thomas Henning

Pierre-Olivier Lagage

Manuel Guedel

Florian Peissker

Tom Ray

Bart Vandenbussche

Ángela García-Argumánez

Rosa María Mérida


We present the ultraviolet luminosity function and an estimate of the cosmic star formation rate density at 8 < z < 13 derived from deep NIRCam observations taken in parallel with the MIRI Deep Survey of the Hubble Ultra Deep Field (HUDF), NIRCam covering the parallel field 2. Our deep (40 hr) NIRCam observations reach an F277W magnitude of 30.8 (5σ), more than 2 mag deeper than JWST public data sets already analyzed to find high-redshift galaxies. We select a sample of 44 z > 8 galaxy candidates based on their dropout nature in the F115W and/or F150W filters, a high probability for their photometric redshifts, estimated with three different codes, being at z > 8, good fits based on χ2 calculations, and predominant solutions compared to z < 8 alternatives. We find mild evolution in the luminosity function from z ∼ 13 to z ∼ 8, i.e., only a small increase in the average number density of ∼0.2 dex, while the faint-end slope and absolute magnitude of the knee remain approximately constant, with values α = − 2.2 ± 0.1, and M* = − 20.8 ± 0.2 mag. Comparing our results with the predictions of state-of-the-art galaxy evolution models, we find two main results: (1) a slower increase with time in the cosmic star formation rate density compared to a steeper rise predicted by models; (2) nearly a factor of 10 higher star formation activity concentrated in scales around 2 kpc in galaxies with stellar masses ∼108M⊙ during the first 350 Myr of the universe, z ∼ 12, with models matching better the luminosity density observational estimations ∼150 Myr later, by z ∼ 9.


Pérez-González, P. G., Costantin, L., Langeroodi, D., Rinaldi, P., Annunziatella, M., Ilbert, O., …María Mérida, R. (2023). Life beyond 30: Probing the −20 < M UV < −17 Luminosity Function at 8 < z < 13 with the NIRCam Parallel Field of the MIRI Deep Survey. Astrophysical Journal Letters, 951:L1(1), 1-14.

Journal Article Type Article
Acceptance Date May 22, 2023
Online Publication Date Jun 27, 2023
Publication Date Jul 1, 2023
Deposit Date Oct 19, 2023
Publicly Available Date Oct 19, 2023
Journal The Astrophysical Journal Letters
Print ISSN 2041-8205
Electronic ISSN 2041-8213
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 951:L1
Issue 1
Pages 1-14
Keywords Space and Planetary Science; Astronomy and Astrophysics
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Copyright Statement
© 2023. The Author(s). Published by the American Astronomical Society.
Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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