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The ALPINE-ALMA [CII] survey: The population of [CII]-undetected galaxies and their role in the L_[CII]-SFR relation

Romano, M. and Morselli, L. and Cassata, P. and Ginolfi, M. and Schaerer, D. and Béthermin, M. and Capak, P. and Faisst, A. and Le Fèvre, O. and Silverman, J. D. and Yan, L. and Bardelli, S. and Boquien, M. and Dessauges-Zavadsky, M. and Fujimoto, S. and Hathi, N. P. and Jones, G. C. and Koekemoer, A. M. and Lemaux, B. C. and Méndez-Hernández, H. and Narayanan, D. and Talia, M. and Vergani, D. and Zamorani, G. and Zucca, E. (2022) The ALPINE-ALMA [CII] survey: The population of [CII]-undetected galaxies and their role in the L_[CII]-SFR relation. Astronomy and Astrophysics, 660 . Art. No. A14. ISSN 0004-6361. doi:10.1051/0004-6361/202142265. https://resolver.caltech.edu/CaltechAUTHORS:20220406-728382450

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Abstract

The [CII] 158 μm emission line represents one of the most profitable tools for the investigation of the high-redshift galaxies in the early Universe so far. Being one of the brightest cooling lines in the rest-frame far-infrared regime of star-forming galaxies, it has been successfully exploited as a tracer of the star-formation rate (SFR) in local sources. The picture is more complex at higher redshifts, where its usability in this context is still under investigation. Recent results from the ALMA Large Program to INvestigate [CII] at Early times (ALPINE) survey suggest that there is no (or weak) evolution of the L[CII]-SFR relation up to z ∼ 6, but their reliability is hampered by the presence of a large population of [CII] nondetected galaxies. In this work, we characterize the population of [CII] nondetections in ALPINE. By stacking their ALMA spectra, we obtained a signal detected at ∼5.1σ, resulting in a [CII] luminosity of log(L_[CII]/L_⊙)∼7.8. When combining this value with those from the [CII] detections, we found a L_[CII]-SFR relation with a slope b = 1.14 ± 0.11, which is in agreement within the uncertainties both with the linear relation found in the local Universe and with the previous findings from ALPINE at z ∼ 5. This suggests that the [CII] line can be considered a good tracer of star formation up to the distant Universe. Finally, we show that the galaxies of our sample that deviate from the observed L_[CII]-SFR relation most could suffer from a less precise redshift estimation, perhaps artificially reducing their [CII] luminosity. In this respect, we claim that there is no evidence in favor of a deficit of [CII] content in high-z galaxies, in contrast with earlier studies.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1051/0004-6361/202142265DOIArticle
https://arxiv.org/abs/2202.02334arXivDiscussion Paper
ORCID:
AuthorORCID
Romano, M.0000-0002-9948-3916
Morselli, L.0000-0003-0753-2571
Cassata, P.0000-0002-6716-4400
Ginolfi, M.0000-0002-8231-821X
Schaerer, D.0000-0001-7144-7182
Béthermin, M.0000-0002-3915-2015
Capak, P.0000-0003-3578-6843
Faisst, A.0000-0002-9382-9832
Le Fèvre, O.0000-0001-5891-2596
Silverman, J. D.0000-0002-0000-6977
Yan, L.0000-0003-1710-9339
Bardelli, S.0000-0002-8900-0298
Boquien, M.0000-0003-0946-6176
Dessauges-Zavadsky, M.0000-0003-0348-2917
Fujimoto, S.0000-0001-7201-5066
Hathi, N. P.0000-0001-6145-5090
Jones, G. C.0000-0002-0267-9024
Koekemoer, A. M.0000-0002-6610-2048
Lemaux, B. C.0000-0002-1428-7036
Méndez-Hernández, H.0000-0003-3057-9677
Narayanan, D.0000-0002-7064-4309
Talia, M.0000-0003-4352-2063
Vergani, D.0000-0003-0898-2216
Zamorani, G.0000-0002-2318-301X
Zucca, E.0000-0002-5845-8132
Additional Information:© ESO 2022. Received 20 September 2021 / Accepted 4 February 2022. We warmly thank the anonymous referee for her/his careful reading of our paper and for the constructive comments and useful suggestions that have contributed to improve the quality of the work. This paper is based on data obtained with the ALMA Observatory, under Large Program 2017.1.00428.L. ALMA is a partnership of ESO (representing its member states), NSF(USA) and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. M.R. acknowledges support from the Narodowe Centrum Nauki (UMO-2020/38/E/ST9/00077). M.T. acknowledges the support from grant PRIN MIUR 2017 20173ML3WW 001. This work was supported by the Programme National Cosmology et Galaxies (PNCG) of CNRS/INSU with INP and IN2P3, co-funded by CEA and CNES. The Cosmic Dawn Center is funded by the Danish National Research Foundation under grant No. 140. This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 847523 “INTERACTIONS”. G.C.J. acknowledges ERC Advanced Grant 695671 “QUENCH” and support by the Science and Technology Facilities Council (STFC). M.B. gratefully acknowledges support by the ANID BASAL project FB210003 and from the FONDECYT regular grant 1211000. This paper is dedicated to the memory of Olivier Le Fèvre, PI of the ALPINE survey.
Funders:
Funding AgencyGrant Number
National Science Centre (Poland)UMO-2020/38/E/ST9/00077
Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR)20173ML3WW 001
Programme National Cosmology et Galaxies (PNCG)UNSPECIFIED
Institut national des sciences de l'Univers (INSU)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut National du Patrimoine (INP)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Commissariat a l'Energie Atomique (CEA)UNSPECIFIED
Centre National d'Études Spatiales (CNES)UNSPECIFIED
Danish National Research Foundation140
Marie Curie Fellowship847523
European Research Council (ERC)695671
Science and Technology Facilities Council (STFC)UNSPECIFIED
Agencia Nacional de Investigación y Desarrollo (ANID)FB210003
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1211000
Subject Keywords:galaxies: high-redshift / galaxies: evolution / galaxies: formation
DOI:10.1051/0004-6361/202142265
Record Number:CaltechAUTHORS:20220406-728382450
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20220406-728382450
Official Citation:The ALPINE-ALMA [CII] survey: The population of [CII]-undetected galaxies and their role in the L[CII]-SFR relation M. Romano, L. Morselli, P. Cassata, M. Ginolfi, D. Schaerer, M. Béthermin, P. Capak, A. Faisst, O. Le Fèvre, J. D. Silverman, L. Yan, S. Bardelli, M. Boquien, M. Dessauges-Zavadsky, S. Fujimoto, N. P. Hathi, G. C. Jones, A. M. Koekemoer, B. C. Lemaux, H. Méndez-Hernández, D. Narayanan, M. Talia, D. Vergani, G. Zamorani and E. Zucca A&A, 660 (2022) A14 DOI: https://doi.org/10.1051/0004-6361/202142265
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:114178
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:06 Apr 2022 13:36
Last Modified:07 Apr 2022 14:15

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  • Romano, M. and Morselli, L. and Cassata, P. and Ginolfi, M. and Schaerer, D. and Béthermin, M. and Capak, P. and Faisst, A. and Le Fèvre, O. and Silverman, J. D. and Yan, L. and Bardelli, S. and Boquien, M. and Dessauges-Zavadsky, M. and Fujimoto, S. and Hathi, N. P. and Jones, G. C. and Koekemoer, A. M. and Lemaux, B. C. and Méndez-Hernández, H. and Narayanan, D. and Talia, M. and Vergani, D. and Zamorani, G. and Zucca, E. The ALPINE-ALMA [CII] survey: The population of [CII]-undetected galaxies and their role in the L_[CII]-SFR relation. (deposited 06 Apr 2022 13:36) [Currently Displayed]

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