Illuminating the Dark Side of Cosmic Star Formation. III. Building the Largest Homogeneous Sample of Radio-selected Dusty Star-forming Galaxies in COSMOS with PhoEBO
In the last decades, an increasing scientific interest has been growing in the elusive population of dark (i.e., lacking an optical/near-IR, hereafter NIR, counterpart) dusty star-forming galaxies (DSFGs). Although extremely promising for their likely contribution to the cosmic star formation rate d...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad1519 |
| _version_ | 1797333480229568512 |
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| author | Fabrizio Gentile Margherita Talia Meriem Behiri Giovanni Zamorani Luigi Barchiesi Cristian Vignali Francesca Pozzi Matthieu Bethermin Andrea Enia Andreas L. Faisst Marika Giulietti Carlotta Gruppioni Andrea Lapi Marcella Massardi Vernesa Smolčić Mattia Vaccari Andrea Cimatti |
| author_facet | Fabrizio Gentile Margherita Talia Meriem Behiri Giovanni Zamorani Luigi Barchiesi Cristian Vignali Francesca Pozzi Matthieu Bethermin Andrea Enia Andreas L. Faisst Marika Giulietti Carlotta Gruppioni Andrea Lapi Marcella Massardi Vernesa Smolčić Mattia Vaccari Andrea Cimatti |
| author_sort | Fabrizio Gentile |
| collection | DOAJ |
| description | In the last decades, an increasing scientific interest has been growing in the elusive population of dark (i.e., lacking an optical/near-IR, hereafter NIR, counterpart) dusty star-forming galaxies (DSFGs). Although extremely promising for their likely contribution to the cosmic star formation rate density (SFRD) and for their possible role in the evolution of the first massive and passive galaxies around z ∼ 3, the difficulty in selecting statistically significant samples of dark DSFGs is limiting their scientific potentialities. This work presents the first panchromatic study of a sample of 263 radio-selected NIR-dark (RS-NIRdark) galaxies discovered in the COSMOS field following the procedure by Talia et al. These sources are selected as radio-bright galaxies ( S _3 GHz > 12.65 μ Jy) with no counterpart in the NIR-selected COSMOS2020 catalog ( Ks ≳ 25.5 mag). For these sources, we build a new photometric catalog including accurate photometry from the optical to the radio obtained with a new deblending pipeline (Photometry Extractor for Blended Objects, or PhoEBO ). We employ this catalog to estimate the photo- z s and the physical properties of the galaxies through an spectral energy distribution-fitting procedure performed with two different codes ( Magphys and Cigale ). Finally, we estimate the active galactic nucleus contamination in our sample by performing a series of complementary tests. The high values of the median extinction ( A _v ∼ 4) and star formation rate (SFR ∼ 500 M _⊙ yr ^−1 ) confirm the likely DSFG nature of the RS-NIRdark galaxies. The median photo- z ( z ∼ 3) and the presence of a significant tail of high- z candidates ( z > 4.5) suggest that these sources are important contributors to the cosmic SFRD and the evolutionary path of galaxies at high redshifts. |
| first_indexed | 2024-03-08T08:05:26Z |
| format | Article |
| id | doaj.art-45ea0afc8b224f4a81b66733930ca393 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-08T08:05:26Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-45ea0afc8b224f4a81b66733930ca3932024-02-02T11:10:36ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-0196212610.3847/1538-4357/ad1519Illuminating the Dark Side of Cosmic Star Formation. III. Building the Largest Homogeneous Sample of Radio-selected Dusty Star-forming Galaxies in COSMOS with PhoEBOFabrizio Gentile0https://orcid.org/0000-0002-8008-9871Margherita Talia1https://orcid.org/0000-0003-4352-2063Meriem Behiri2https://orcid.org/0000-0002-6444-8547Giovanni Zamorani3https://orcid.org/0000-0002-2318-301XLuigi Barchiesi4https://orcid.org/0000-0003-3419-538XCristian Vignali5https://orcid.org/0000-0002-8853-9611Francesca Pozzi6https://orcid.org/0000-0002-7412-647XMatthieu Bethermin7https://orcid.org/0000-0002-3915-2015Andrea Enia8https://orcid.org/0000-0002-0200-2857Andreas L. Faisst9https://orcid.org/0000-0002-9382-9832Marika Giulietti10https://orcid.org/0000-0002-1847-4496Carlotta Gruppioni11https://orcid.org/0000-0002-5836-4056Andrea Lapi12https://orcid.org/0000-0002-4882-1735Marcella Massardi13https://orcid.org/0000-0002-0375-8330Vernesa Smolčić14https://orcid.org/0000-0002-3893-8614Mattia Vaccari15https://orcid.org/0000-0002-6748-0577Andrea Cimatti16https://orcid.org/0000-0002-4409-5633University of Bologna , Department of Physics and Astronomy (DIFA), Via Gobetti 93/2, I-40129, Bologna, Italy ; fabrizio.gentile3@unibo.it; INAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalyUniversity of Bologna , Department of Physics and Astronomy (DIFA), Via Gobetti 93/2, I-40129, Bologna, Italy ; fabrizio.gentile3@unibo.it; INAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalySISSA , Via Bonomea 265, I-34136 Trieste, ItalyINAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalyUniversity of Bologna , Department of Physics and Astronomy (DIFA), Via Gobetti 93/2, I-40129, Bologna, Italy ; fabrizio.gentile3@unibo.it; INAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalyUniversity of Bologna , Department of Physics and Astronomy (DIFA), Via Gobetti 93/2, I-40129, Bologna, Italy ; fabrizio.gentile3@unibo.it; INAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalyUniversity of Bologna , Department of Physics and Astronomy (DIFA), Via Gobetti 93/2, I-40129, Bologna, Italy ; fabrizio.gentile3@unibo.it; INAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalyUniversité de Strasbourg , CNRS, Observatoire astronomique de Strasbourg, UMR 7550, F-67000 Strasbourg, France; Aix Marseille Univ , CNRS, CNES, LAM, Marseille, FranceUniversity of Bologna , Department of Physics and Astronomy (DIFA), Via Gobetti 93/2, I-40129, Bologna, Italy ; fabrizio.gentile3@unibo.it; INAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalyCaltech/IPAC , MS314-6, 1200 E. California Blvd. Pasadena, CA 91125, USAINAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, Italy; SISSA , Via Bonomea 265, I-34136 Trieste, ItalyINAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalySISSA , Via Bonomea 265, I-34136 Trieste, Italy; IFPU—Institute for fundamental physics of the Universe , Via Beirut 2, I-34014 Trieste, Italy; INFN-Sezione di Trieste , via Valerio 2, I-34127 Trieste, Italy; INAF/IRA, Istituto di Radioastronomia , Via Piero Gobetti 101, I-40129 Bologna, ItalySISSA , Via Bonomea 265, I-34136 Trieste, Italy; INAF/IRA, Istituto di Radioastronomia , Via Piero Gobetti 101, I-40129 Bologna, Italy; INAF, Istituto di Radioastronomia—Italian ARC , Via Piero Gobetti 101, I-40129 Bologna, ItalyDepartment of Physics, University of Zagreb , Bijenicka cesta 32, 10002 Zagreb, CroatiaINAF/IRA, Istituto di Radioastronomia , Via Piero Gobetti 101, I-40129 Bologna, Italy; Inter-University Institute for Data Intensive Astronomy , Department of Astronomy, University of Cape Town, 7701 Rondebosch, Cape Town, South Africa; Inter-University Institute for Data Intensive Astronomy , Department of Physics and Astronomy, University of the Western Cape, 7535 Bellville, Cape Town, South AfricaUniversity of Bologna , Department of Physics and Astronomy (DIFA), Via Gobetti 93/2, I-40129, Bologna, Italy ; fabrizio.gentile3@unibo.it; INAF—Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3-I-40129, Bologna, ItalyIn the last decades, an increasing scientific interest has been growing in the elusive population of dark (i.e., lacking an optical/near-IR, hereafter NIR, counterpart) dusty star-forming galaxies (DSFGs). Although extremely promising for their likely contribution to the cosmic star formation rate density (SFRD) and for their possible role in the evolution of the first massive and passive galaxies around z ∼ 3, the difficulty in selecting statistically significant samples of dark DSFGs is limiting their scientific potentialities. This work presents the first panchromatic study of a sample of 263 radio-selected NIR-dark (RS-NIRdark) galaxies discovered in the COSMOS field following the procedure by Talia et al. These sources are selected as radio-bright galaxies ( S _3 GHz > 12.65 μ Jy) with no counterpart in the NIR-selected COSMOS2020 catalog ( Ks ≳ 25.5 mag). For these sources, we build a new photometric catalog including accurate photometry from the optical to the radio obtained with a new deblending pipeline (Photometry Extractor for Blended Objects, or PhoEBO ). We employ this catalog to estimate the photo- z s and the physical properties of the galaxies through an spectral energy distribution-fitting procedure performed with two different codes ( Magphys and Cigale ). Finally, we estimate the active galactic nucleus contamination in our sample by performing a series of complementary tests. The high values of the median extinction ( A _v ∼ 4) and star formation rate (SFR ∼ 500 M _⊙ yr ^−1 ) confirm the likely DSFG nature of the RS-NIRdark galaxies. The median photo- z ( z ∼ 3) and the presence of a significant tail of high- z candidates ( z > 4.5) suggest that these sources are important contributors to the cosmic SFRD and the evolutionary path of galaxies at high redshifts.https://doi.org/10.3847/1538-4357/ad1519Extragalactic radio sourcesGalaxy evolutionGalaxy formationHigh-redshift galaxiesStar formation |
| spellingShingle | Fabrizio Gentile Margherita Talia Meriem Behiri Giovanni Zamorani Luigi Barchiesi Cristian Vignali Francesca Pozzi Matthieu Bethermin Andrea Enia Andreas L. Faisst Marika Giulietti Carlotta Gruppioni Andrea Lapi Marcella Massardi Vernesa Smolčić Mattia Vaccari Andrea Cimatti Illuminating the Dark Side of Cosmic Star Formation. III. Building the Largest Homogeneous Sample of Radio-selected Dusty Star-forming Galaxies in COSMOS with PhoEBO The Astrophysical Journal Extragalactic radio sources Galaxy evolution Galaxy formation High-redshift galaxies Star formation |
| title | Illuminating the Dark Side of Cosmic Star Formation. III. Building the Largest Homogeneous Sample of Radio-selected Dusty Star-forming Galaxies in COSMOS with PhoEBO |
| title_full | Illuminating the Dark Side of Cosmic Star Formation. III. Building the Largest Homogeneous Sample of Radio-selected Dusty Star-forming Galaxies in COSMOS with PhoEBO |
| title_fullStr | Illuminating the Dark Side of Cosmic Star Formation. III. Building the Largest Homogeneous Sample of Radio-selected Dusty Star-forming Galaxies in COSMOS with PhoEBO |
| title_full_unstemmed | Illuminating the Dark Side of Cosmic Star Formation. III. Building the Largest Homogeneous Sample of Radio-selected Dusty Star-forming Galaxies in COSMOS with PhoEBO |
| title_short | Illuminating the Dark Side of Cosmic Star Formation. III. Building the Largest Homogeneous Sample of Radio-selected Dusty Star-forming Galaxies in COSMOS with PhoEBO |
| title_sort | illuminating the dark side of cosmic star formation iii building the largest homogeneous sample of radio selected dusty star forming galaxies in cosmos with phoebo |
| topic | Extragalactic radio sources Galaxy evolution Galaxy formation High-redshift galaxies Star formation |
| url | https://doi.org/10.3847/1538-4357/ad1519 |
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