High-z [OI] emission lines: COLDSIM simulations and ALMA observations

M. Parente; M. Bischetti; U. Maio; F. Salvestrini; C. Feruglio; G. L. Granato; C. Ragone-Figueroa; R. Tripodi; C. De Breuck; C. Ferkinhoff; L. Tornatore

doi:10.1051/0004-6361/202557033

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Volume 705 (January 2026)

A&A, 705 (2026) A39

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Issue		A&A Volume 705, January 2026


Article Number		A39
Number of page(s)		15
Section		Extragalactic astronomy
DOI		https://doi.org/10.1051/0004-6361/202557033
Published online		07 January 2026

A&A, 705, A39 (2026)

High-z [OI] emission lines: COLDSIM simulations and ALMA observations

M. Parente¹^,2^★, M. Bischetti³^,2, U. Maio¹^,2, F. Salvestrini¹^,2, C. Feruglio¹^,2, G. L. Granato¹^,2^,4, C. Ragone-Figueroa⁴^,1^,2, R. Tripodi⁵^,6^,2, C. De Breuck⁷, C. Ferkinhoff⁸ and L. Tornatore¹^,9

¹ INAF, Osservatorio Astronomico di Trieste, via Tiepolo 11, I-34131 Trieste, Italy
² IFPU, Institute for Fundamental Physics of the Universe, Via Beirut 2, 34014 Trieste, Italy
³ Dipartimento di Fisica, Universitá di Trieste, Sezione di Astronomia, Via G.B. Tiepolo 11, I-34131 Trieste, Italy
⁴ IATE – Instituto de Astronomía Teórica y Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina (CONICET), Universidad Nacional de Córdoba, Laprida 854, X5000BGR Córdoba, Argentina
⁵ INAF - Osservatorio Astronomico di Roma, Via Frascati 33, I-00078 Monte Porzio Catone, Italy
⁶ University of Ljubljana FMF, Jadranska 19, 1000 Ljubljana, Slovenia
⁷ European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany
⁸ Department of Physics, Winona State University, Winona, MN, 55987, USA
⁹ ICSC – Italian Research Center on High Performance Computing, Big Data and Quantum Computing, via Magnanelli 2, 40033 Casalecchio di Reno, Italy

^★ Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it. ; This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 29 August 2025
Accepted: 29 October 2025

Abstract

Neutral-oxygen [OI] far-infrared emission lines at 63 μm and 145 μm are powerful probes of the physical conditions in the interstellar medium, although they have not been fully exploited in high-redshift studies.

Key words: ISM: clouds / ISM: lines and bands / galaxies: evolution / galaxies: high-redshift / galaxies: ISM / infrared: ISM

Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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