ALMA Lensing Cluster Survey: Deep 1.2 mm Number Counts and Infrared Luminosity Functions at z ≃ 1-8
Artikel i vetenskaplig tidskrift, 2024

We present a statistical study of 180 dust continuum sources identified in 33 massive cluster fields by the Atacama Large Millimeter/submillimeter Array Lensing Cluster Survey (ALCS) over a total of 133 arcmin2 area, homogeneously observed at 1.2 mm. ALCS enables us to detect extremely faint millimeter sources by lensing magnification, including near-infrared (NIR) dark objects showing no counterparts in existing Hubble Space Telescope and Spitzer images. The dust continuum sources belong to a blind sample (N = 141) with signal-to-noise ratio (S/N) ≳ 5.0 (a purity of >0.99) or a secondary sample (N = 39) with S/N = 4.0-5.0 screened by priors. With the blind sample, we securely derive 1.2 mm number counts down to ∼7 μJy, and find that the total integrated 1.2 mm flux is 20.7 − 6.5 + 8.5 Jy deg−2, resolving ≃80% of the cosmic infrared background light. The resolved fraction varies by a factor of 0.6-1.1 due to the completeness correction depending on the spatial size of the millimeter emission. We also derive infrared (IR) luminosity functions (LFs) at z = 0.6-7.5 with the 1 / V max method, finding the redshift evolution of IR LFs characterized by positive luminosity and negative density evolution. The total (= UV + IR) cosmic star formation rate density (SFRD) at z > 4 is estimated to be 161 − 21 + 25 % of the Madau and Dickinson measurements mostly based on rest-frame UV surveys. Although our general understanding of the cosmic SFRD is unlikely to change beyond a factor of 2, these results add to the weight of evidence for an additional (≈60%) SFRD component contributed by the faint millimeter population, including NIR-dark objects.

Författare

S. Fujimoto

University of Texas

Cosmic Dawn Center (DAWN)

Niels Bohr Institute

Kotaro Kohno

Research Center for the Early Universe

University of Tokyo

Masami Ouchi

University of Tokyo

National Astronomical Observatory of Japan

M. Oguri

Chiba University

V. Kokorev

Rijksuniversiteit Groningen

Niels Bohr Institute

Cosmic Dawn Center (DAWN)

G. Brammer

Cosmic Dawn Center (DAWN)

Niels Bohr Institute

Fengwu Sun

University of Arizona

J. González-López

Las Campanas Observatory

Universidad Diego Portales

F. E. Bauer

Instituto Milenio de Astrofísica

Pontificia Universidad Catolica de Chile

G. B. Caminha

Rijksuniversiteit Groningen

B. Hatsukade

University of Tokyo

The Graduate University for Advanced Studies (SOKENDAI)

National Astronomical Observatory of Japan

J. Richard

École Normale Supérieure de Lyon

I. Smail

Durham University

Akiyoshi Tsujita

University of Tokyo

Yoshihiro Ueda

Kyoto University

Ryosuke Uematsu

Kyoto University

A. Zitrin

Ben-Gurion University of the Negev

D. Coe

Association of Universities for Research in Astronomy (AURA)

Space Telescope Science Institute (STScI)

Johns Hopkins University

J.P.J.P. Kneib

Ecole Polytechnique Federale de Lausanne (EPFL)

M. Postman

Space Telescope Science Institute (STScI)

K. Umetsu

Academia Sinica

C. D. P. Lagos

Cosmic Dawn Center (DAWN)

ARC Centre of Excellence for All-sky Astrophysics (CAASTRO)

University of Western Australia

Gergö Popping

European Southern Observatory (ESO)

Y. Ao

Chinese Academy of Sciences

Larry Bradley

Space Telescope Science Institute (STScI)

Karina I. Caputi

Cosmic Dawn Center (DAWN)

Rijksuniversiteit Groningen

M. Dessauges-Zavadsky

Université de Genève

Eiichi Egami

University of Arizona

D. Espada

Universidad de Granada

R. J. Ivison

European Southern Observatory (ESO)

Mathilde Jauzac

Durham University

Kirsten Knudsen

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Anton M. Koekemoer

Space Telescope Science Institute (STScI)

Georgios E. Magdis

Danmarks Tekniske Universitet (DTU)

Cosmic Dawn Center (DAWN)

Niels Bohr Institute

Guillaume Mahler

Durham University

A. M. Muñoz Arancibia

Instituto Milenio de Astrofísica

Universidad de Chile (UCH)

T.D. Rawle

Europeiska rymdorganisationen (ESA)

K. Shimasaku

University of Tokyo

Research Center for the Early Universe

Sune Toft

Niels Bohr Institute

Cosmic Dawn Center (DAWN)

H. Umehata

Nagoya University

California Institute of Technology (Caltech)

F. Valentino

Niels Bohr Institute

European Southern Observatory (ESO)

Cosmic Dawn Center (DAWN)

T. Wang

Nanjing University

Wei Hao Wang

Academia Sinica

Astrophysical Journal, Supplement Series

0067-0049 (ISSN) 1538-4365 (eISSN)

Vol. 275 2 36

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Knut och Alice Wallenbergs Stiftelse (KAW 2019.0443), 2020-06-01 -- 2023-05-31.

Knut och Alice Wallenbergs Stiftelse (KAW 2020.0081), 2021-07-01 -- 2026-06-30.

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Vetenskapsrådet (VR) (2015-05580), 2016-01-01 -- 2019-12-31.

Ämneskategorier (SSIF 2011)

Astronomi, astrofysik och kosmologi

DOI

10.3847/1538-4365/ad5ae2

Relaterade dataset

ALMA Lensing Cluster Survey (ALCS) 1.2mm : J/ApJS/275/36 [dataset]

DOI: 10.26093/cds/vizier/bb-8k-14

Mer information

Senast uppdaterat

2026-08-14