Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST
We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag...
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E-Artikel |
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| Sprache: |
Englisch |
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2023 |
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In: The Astrophysical Journal - IOP Publishing, 2022, 956(2023), 1, p 61 |
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| Übergeordnetes Werk: |
volume:956 ; year:2023 ; number:1, p 61 |
| Links: |
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| DOI / URN: |
10.3847/1538-4357/acef21 |
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| Katalog-ID: |
DOAJ095213910 |
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| 100 | 0 | |a Hollis B. Akins |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST |
| 264 | 1 | |c 2023 | |
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| 520 | |a We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. | ||
| 650 | 4 | |a Galaxy evolution | |
| 650 | 4 | |a Galaxy formation | |
| 650 | 4 | |a High-redshift galaxies | |
| 650 | 4 | |a Galaxies | |
| 653 | 0 | |a Astrophysics | |
| 700 | 0 | |a Caitlin M. Casey |e verfasserin |4 aut | |
| 700 | 0 | |a Natalie Allen |e verfasserin |4 aut | |
| 700 | 0 | |a Micaela B. Bagley |e verfasserin |4 aut | |
| 700 | 0 | |a Mark Dickinson |e verfasserin |4 aut | |
| 700 | 0 | |a Steven L. Finkelstein |e verfasserin |4 aut | |
| 700 | 0 | |a Maximilien Franco |e verfasserin |4 aut | |
| 700 | 0 | |a Santosh Harish |e verfasserin |4 aut | |
| 700 | 0 | |a Pablo Arrabal Haro |e verfasserin |4 aut | |
| 700 | 0 | |a Olivier Ilbert |e verfasserin |4 aut | |
| 700 | 0 | |a Jeyhan S. Kartaltepe |e verfasserin |4 aut | |
| 700 | 0 | |a Anton M. Koekemoer |e verfasserin |4 aut | |
| 700 | 0 | |a Daizhong Liu |e verfasserin |4 aut | |
| 700 | 0 | |a Arianna S. Long |e verfasserin |4 aut | |
| 700 | 0 | |a Henry Joy McCracken |e verfasserin |4 aut | |
| 700 | 0 | |a Louise Paquereau |e verfasserin |4 aut | |
| 700 | 0 | |a Casey Papovich |e verfasserin |4 aut | |
| 700 | 0 | |a Nor Pirzkal |e verfasserin |4 aut | |
| 700 | 0 | |a Jason Rhodes |e verfasserin |4 aut | |
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| 700 | 0 | |a Marko Shuntov |e verfasserin |4 aut | |
| 700 | 0 | |a Sune Toft |e verfasserin |4 aut | |
| 700 | 0 | |a Guang Yang |e verfasserin |4 aut | |
| 700 | 0 | |a Guillermo Barro |e verfasserin |4 aut | |
| 700 | 0 | |a Laura Bisigello |e verfasserin |4 aut | |
| 700 | 0 | |a Véronique Buat |e verfasserin |4 aut | |
| 700 | 0 | |a Jaclyn B. Champagne |e verfasserin |4 aut | |
| 700 | 0 | |a Olivia Cooper |e verfasserin |4 aut | |
| 700 | 0 | |a Luca Costantin |e verfasserin |4 aut | |
| 700 | 0 | |a Alexander de la Vega |e verfasserin |4 aut | |
| 700 | 0 | |a Nicole E. Drakos |e verfasserin |4 aut | |
| 700 | 0 | |a Andreas Faisst |e verfasserin |4 aut | |
| 700 | 0 | |a Adriano Fontana |e verfasserin |4 aut | |
| 700 | 0 | |a Seiji Fujimoto |e verfasserin |4 aut | |
| 700 | 0 | |a Steven Gillman |e verfasserin |4 aut | |
| 700 | 0 | |a Carlos Gómez-Guijarro |e verfasserin |4 aut | |
| 700 | 0 | |a Ghassem Gozaliasl |e verfasserin |4 aut | |
| 700 | 0 | |a Nimish P. Hathi |e verfasserin |4 aut | |
| 700 | 0 | |a Christopher C. Hayward |e verfasserin |4 aut | |
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| 700 | 0 | |a Shuowen Jin |e verfasserin |4 aut | |
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| 700 | 0 | |a Bahram Mobasher |e verfasserin |4 aut | |
| 700 | 0 | |a Pablo G. Pérez-González |e verfasserin |4 aut | |
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| 700 | 0 | |a Lise-Marie Seillé |e verfasserin |4 aut | |
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| 700 | 0 | |a L. Y. Aaron Yung |e verfasserin |4 aut | |
| 700 | 0 | |a Jorge Zavala |e verfasserin |4 aut | |
| 700 | 0 | |a the COSMOS-Web and CEERS teams |e verfasserin |4 aut | |
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10.3847/1538-4357/acef21 doi (DE-627)DOAJ095213910 (DE-599)DOAJ43e76fbe19ce4d06b96fea96fe4c914e DE-627 ger DE-627 rakwb eng QB460-466 Hollis B. Akins verfasserin aut Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. Galaxy evolution Galaxy formation High-redshift galaxies Galaxies Astrophysics Caitlin M. Casey verfasserin aut Natalie Allen verfasserin aut Micaela B. Bagley verfasserin aut Mark Dickinson verfasserin aut Steven L. Finkelstein verfasserin aut Maximilien Franco verfasserin aut Santosh Harish verfasserin aut Pablo Arrabal Haro verfasserin aut Olivier Ilbert verfasserin aut Jeyhan S. Kartaltepe verfasserin aut Anton M. Koekemoer verfasserin aut Daizhong Liu verfasserin aut Arianna S. Long verfasserin aut Henry Joy McCracken verfasserin aut Louise Paquereau verfasserin aut Casey Papovich verfasserin aut Nor Pirzkal verfasserin aut Jason Rhodes verfasserin aut Brant E. Robertson verfasserin aut Marko Shuntov verfasserin aut Sune Toft verfasserin aut Guang Yang verfasserin aut Guillermo Barro verfasserin aut Laura Bisigello verfasserin aut Véronique Buat verfasserin aut Jaclyn B. Champagne verfasserin aut Olivia Cooper verfasserin aut Luca Costantin verfasserin aut Alexander de la Vega verfasserin aut Nicole E. Drakos verfasserin aut Andreas Faisst verfasserin aut Adriano Fontana verfasserin aut Seiji Fujimoto verfasserin aut Steven Gillman verfasserin aut Carlos Gómez-Guijarro verfasserin aut Ghassem Gozaliasl verfasserin aut Nimish P. Hathi verfasserin aut Christopher C. Hayward verfasserin aut Michaela Hirschmann verfasserin aut Benne W. Holwerda verfasserin aut Shuowen Jin verfasserin aut Dale D. Kocevski verfasserin aut Vasily Kokorev verfasserin aut Erini Lambrides verfasserin aut Ray A. Lucas verfasserin aut Georgios E. Magdis verfasserin aut Benjamin Magnelli verfasserin aut Jed McKinney verfasserin aut Bahram Mobasher verfasserin aut Pablo G. Pérez-González verfasserin aut R. Michael Rich verfasserin aut Lise-Marie Seillé verfasserin aut Margherita Talia verfasserin aut C. Megan Urry verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut L. Y. Aaron Yung verfasserin aut Jorge Zavala verfasserin aut the COSMOS-Web and CEERS teams verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 956(2023), 1, p 61 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:956 year:2023 number:1, p 61 https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/article/43e76fbe19ce4d06b96fea96fe4c914e kostenfrei https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 956 2023 1, p 61 |
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10.3847/1538-4357/acef21 doi (DE-627)DOAJ095213910 (DE-599)DOAJ43e76fbe19ce4d06b96fea96fe4c914e DE-627 ger DE-627 rakwb eng QB460-466 Hollis B. Akins verfasserin aut Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. Galaxy evolution Galaxy formation High-redshift galaxies Galaxies Astrophysics Caitlin M. Casey verfasserin aut Natalie Allen verfasserin aut Micaela B. Bagley verfasserin aut Mark Dickinson verfasserin aut Steven L. Finkelstein verfasserin aut Maximilien Franco verfasserin aut Santosh Harish verfasserin aut Pablo Arrabal Haro verfasserin aut Olivier Ilbert verfasserin aut Jeyhan S. Kartaltepe verfasserin aut Anton M. Koekemoer verfasserin aut Daizhong Liu verfasserin aut Arianna S. Long verfasserin aut Henry Joy McCracken verfasserin aut Louise Paquereau verfasserin aut Casey Papovich verfasserin aut Nor Pirzkal verfasserin aut Jason Rhodes verfasserin aut Brant E. Robertson verfasserin aut Marko Shuntov verfasserin aut Sune Toft verfasserin aut Guang Yang verfasserin aut Guillermo Barro verfasserin aut Laura Bisigello verfasserin aut Véronique Buat verfasserin aut Jaclyn B. Champagne verfasserin aut Olivia Cooper verfasserin aut Luca Costantin verfasserin aut Alexander de la Vega verfasserin aut Nicole E. Drakos verfasserin aut Andreas Faisst verfasserin aut Adriano Fontana verfasserin aut Seiji Fujimoto verfasserin aut Steven Gillman verfasserin aut Carlos Gómez-Guijarro verfasserin aut Ghassem Gozaliasl verfasserin aut Nimish P. Hathi verfasserin aut Christopher C. Hayward verfasserin aut Michaela Hirschmann verfasserin aut Benne W. Holwerda verfasserin aut Shuowen Jin verfasserin aut Dale D. Kocevski verfasserin aut Vasily Kokorev verfasserin aut Erini Lambrides verfasserin aut Ray A. Lucas verfasserin aut Georgios E. Magdis verfasserin aut Benjamin Magnelli verfasserin aut Jed McKinney verfasserin aut Bahram Mobasher verfasserin aut Pablo G. Pérez-González verfasserin aut R. Michael Rich verfasserin aut Lise-Marie Seillé verfasserin aut Margherita Talia verfasserin aut C. Megan Urry verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut L. Y. Aaron Yung verfasserin aut Jorge Zavala verfasserin aut the COSMOS-Web and CEERS teams verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 956(2023), 1, p 61 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:956 year:2023 number:1, p 61 https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/article/43e76fbe19ce4d06b96fea96fe4c914e kostenfrei https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 956 2023 1, p 61 |
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10.3847/1538-4357/acef21 doi (DE-627)DOAJ095213910 (DE-599)DOAJ43e76fbe19ce4d06b96fea96fe4c914e DE-627 ger DE-627 rakwb eng QB460-466 Hollis B. Akins verfasserin aut Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. Galaxy evolution Galaxy formation High-redshift galaxies Galaxies Astrophysics Caitlin M. Casey verfasserin aut Natalie Allen verfasserin aut Micaela B. Bagley verfasserin aut Mark Dickinson verfasserin aut Steven L. Finkelstein verfasserin aut Maximilien Franco verfasserin aut Santosh Harish verfasserin aut Pablo Arrabal Haro verfasserin aut Olivier Ilbert verfasserin aut Jeyhan S. Kartaltepe verfasserin aut Anton M. Koekemoer verfasserin aut Daizhong Liu verfasserin aut Arianna S. Long verfasserin aut Henry Joy McCracken verfasserin aut Louise Paquereau verfasserin aut Casey Papovich verfasserin aut Nor Pirzkal verfasserin aut Jason Rhodes verfasserin aut Brant E. Robertson verfasserin aut Marko Shuntov verfasserin aut Sune Toft verfasserin aut Guang Yang verfasserin aut Guillermo Barro verfasserin aut Laura Bisigello verfasserin aut Véronique Buat verfasserin aut Jaclyn B. Champagne verfasserin aut Olivia Cooper verfasserin aut Luca Costantin verfasserin aut Alexander de la Vega verfasserin aut Nicole E. Drakos verfasserin aut Andreas Faisst verfasserin aut Adriano Fontana verfasserin aut Seiji Fujimoto verfasserin aut Steven Gillman verfasserin aut Carlos Gómez-Guijarro verfasserin aut Ghassem Gozaliasl verfasserin aut Nimish P. Hathi verfasserin aut Christopher C. Hayward verfasserin aut Michaela Hirschmann verfasserin aut Benne W. Holwerda verfasserin aut Shuowen Jin verfasserin aut Dale D. Kocevski verfasserin aut Vasily Kokorev verfasserin aut Erini Lambrides verfasserin aut Ray A. Lucas verfasserin aut Georgios E. Magdis verfasserin aut Benjamin Magnelli verfasserin aut Jed McKinney verfasserin aut Bahram Mobasher verfasserin aut Pablo G. Pérez-González verfasserin aut R. Michael Rich verfasserin aut Lise-Marie Seillé verfasserin aut Margherita Talia verfasserin aut C. Megan Urry verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut L. Y. Aaron Yung verfasserin aut Jorge Zavala verfasserin aut the COSMOS-Web and CEERS teams verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 956(2023), 1, p 61 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:956 year:2023 number:1, p 61 https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/article/43e76fbe19ce4d06b96fea96fe4c914e kostenfrei https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 956 2023 1, p 61 |
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10.3847/1538-4357/acef21 doi (DE-627)DOAJ095213910 (DE-599)DOAJ43e76fbe19ce4d06b96fea96fe4c914e DE-627 ger DE-627 rakwb eng QB460-466 Hollis B. Akins verfasserin aut Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. Galaxy evolution Galaxy formation High-redshift galaxies Galaxies Astrophysics Caitlin M. Casey verfasserin aut Natalie Allen verfasserin aut Micaela B. Bagley verfasserin aut Mark Dickinson verfasserin aut Steven L. Finkelstein verfasserin aut Maximilien Franco verfasserin aut Santosh Harish verfasserin aut Pablo Arrabal Haro verfasserin aut Olivier Ilbert verfasserin aut Jeyhan S. Kartaltepe verfasserin aut Anton M. Koekemoer verfasserin aut Daizhong Liu verfasserin aut Arianna S. Long verfasserin aut Henry Joy McCracken verfasserin aut Louise Paquereau verfasserin aut Casey Papovich verfasserin aut Nor Pirzkal verfasserin aut Jason Rhodes verfasserin aut Brant E. Robertson verfasserin aut Marko Shuntov verfasserin aut Sune Toft verfasserin aut Guang Yang verfasserin aut Guillermo Barro verfasserin aut Laura Bisigello verfasserin aut Véronique Buat verfasserin aut Jaclyn B. Champagne verfasserin aut Olivia Cooper verfasserin aut Luca Costantin verfasserin aut Alexander de la Vega verfasserin aut Nicole E. Drakos verfasserin aut Andreas Faisst verfasserin aut Adriano Fontana verfasserin aut Seiji Fujimoto verfasserin aut Steven Gillman verfasserin aut Carlos Gómez-Guijarro verfasserin aut Ghassem Gozaliasl verfasserin aut Nimish P. Hathi verfasserin aut Christopher C. Hayward verfasserin aut Michaela Hirschmann verfasserin aut Benne W. Holwerda verfasserin aut Shuowen Jin verfasserin aut Dale D. Kocevski verfasserin aut Vasily Kokorev verfasserin aut Erini Lambrides verfasserin aut Ray A. Lucas verfasserin aut Georgios E. Magdis verfasserin aut Benjamin Magnelli verfasserin aut Jed McKinney verfasserin aut Bahram Mobasher verfasserin aut Pablo G. Pérez-González verfasserin aut R. Michael Rich verfasserin aut Lise-Marie Seillé verfasserin aut Margherita Talia verfasserin aut C. Megan Urry verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut L. Y. Aaron Yung verfasserin aut Jorge Zavala verfasserin aut the COSMOS-Web and CEERS teams verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 956(2023), 1, p 61 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:956 year:2023 number:1, p 61 https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/article/43e76fbe19ce4d06b96fea96fe4c914e kostenfrei https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 956 2023 1, p 61 |
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10.3847/1538-4357/acef21 doi (DE-627)DOAJ095213910 (DE-599)DOAJ43e76fbe19ce4d06b96fea96fe4c914e DE-627 ger DE-627 rakwb eng QB460-466 Hollis B. Akins verfasserin aut Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. Galaxy evolution Galaxy formation High-redshift galaxies Galaxies Astrophysics Caitlin M. Casey verfasserin aut Natalie Allen verfasserin aut Micaela B. Bagley verfasserin aut Mark Dickinson verfasserin aut Steven L. Finkelstein verfasserin aut Maximilien Franco verfasserin aut Santosh Harish verfasserin aut Pablo Arrabal Haro verfasserin aut Olivier Ilbert verfasserin aut Jeyhan S. Kartaltepe verfasserin aut Anton M. Koekemoer verfasserin aut Daizhong Liu verfasserin aut Arianna S. Long verfasserin aut Henry Joy McCracken verfasserin aut Louise Paquereau verfasserin aut Casey Papovich verfasserin aut Nor Pirzkal verfasserin aut Jason Rhodes verfasserin aut Brant E. Robertson verfasserin aut Marko Shuntov verfasserin aut Sune Toft verfasserin aut Guang Yang verfasserin aut Guillermo Barro verfasserin aut Laura Bisigello verfasserin aut Véronique Buat verfasserin aut Jaclyn B. Champagne verfasserin aut Olivia Cooper verfasserin aut Luca Costantin verfasserin aut Alexander de la Vega verfasserin aut Nicole E. Drakos verfasserin aut Andreas Faisst verfasserin aut Adriano Fontana verfasserin aut Seiji Fujimoto verfasserin aut Steven Gillman verfasserin aut Carlos Gómez-Guijarro verfasserin aut Ghassem Gozaliasl verfasserin aut Nimish P. Hathi verfasserin aut Christopher C. Hayward verfasserin aut Michaela Hirschmann verfasserin aut Benne W. Holwerda verfasserin aut Shuowen Jin verfasserin aut Dale D. Kocevski verfasserin aut Vasily Kokorev verfasserin aut Erini Lambrides verfasserin aut Ray A. Lucas verfasserin aut Georgios E. Magdis verfasserin aut Benjamin Magnelli verfasserin aut Jed McKinney verfasserin aut Bahram Mobasher verfasserin aut Pablo G. Pérez-González verfasserin aut R. Michael Rich verfasserin aut Lise-Marie Seillé verfasserin aut Margherita Talia verfasserin aut C. Megan Urry verfasserin aut Francesco Valentino verfasserin aut Katherine E. Whitaker verfasserin aut L. Y. Aaron Yung verfasserin aut Jorge Zavala verfasserin aut the COSMOS-Web and CEERS teams verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 956(2023), 1, p 61 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:956 year:2023 number:1, p 61 https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/article/43e76fbe19ce4d06b96fea96fe4c914e kostenfrei https://doi.org/10.3847/1538-4357/acef21 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 956 2023 1, p 61 |
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Hollis B. Akins @@aut@@ Caitlin M. Casey @@aut@@ Natalie Allen @@aut@@ Micaela B. Bagley @@aut@@ Mark Dickinson @@aut@@ Steven L. Finkelstein @@aut@@ Maximilien Franco @@aut@@ Santosh Harish @@aut@@ Pablo Arrabal Haro @@aut@@ Olivier Ilbert @@aut@@ Jeyhan S. Kartaltepe @@aut@@ Anton M. Koekemoer @@aut@@ Daizhong Liu @@aut@@ Arianna S. Long @@aut@@ Henry Joy McCracken @@aut@@ Louise Paquereau @@aut@@ Casey Papovich @@aut@@ Nor Pirzkal @@aut@@ Jason Rhodes @@aut@@ Brant E. Robertson @@aut@@ Marko Shuntov @@aut@@ Sune Toft @@aut@@ Guang Yang @@aut@@ Guillermo Barro @@aut@@ Laura Bisigello @@aut@@ Véronique Buat @@aut@@ Jaclyn B. Champagne @@aut@@ Olivia Cooper @@aut@@ Luca Costantin @@aut@@ Alexander de la Vega @@aut@@ Nicole E. Drakos @@aut@@ Andreas Faisst @@aut@@ Adriano Fontana @@aut@@ Seiji Fujimoto @@aut@@ Steven Gillman @@aut@@ Carlos Gómez-Guijarro @@aut@@ Ghassem Gozaliasl @@aut@@ Nimish P. Hathi @@aut@@ Christopher C. Hayward @@aut@@ Michaela Hirschmann @@aut@@ Benne W. Holwerda @@aut@@ Shuowen Jin @@aut@@ Dale D. Kocevski @@aut@@ Vasily Kokorev @@aut@@ Erini Lambrides @@aut@@ Ray A. Lucas @@aut@@ Georgios E. Magdis @@aut@@ Benjamin Magnelli @@aut@@ Jed McKinney @@aut@@ Bahram Mobasher @@aut@@ Pablo G. Pérez-González @@aut@@ R. Michael Rich @@aut@@ Lise-Marie Seillé @@aut@@ Margherita Talia @@aut@@ C. Megan Urry @@aut@@ Francesco Valentino @@aut@@ Katherine E. Whitaker @@aut@@ L. Y. Aaron Yung @@aut@@ Jorge Zavala @@aut@@ the COSMOS-Web and CEERS teams @@aut@@ |
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Akins</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2023</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Galaxy evolution</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Galaxy formation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">High-redshift galaxies</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Galaxies</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Astrophysics</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Caitlin M. 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QB460-466 Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST Galaxy evolution Galaxy formation High-redshift galaxies Galaxies |
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Hollis B. Akins Caitlin M. Casey Natalie Allen Micaela B. Bagley Mark Dickinson Steven L. Finkelstein Maximilien Franco Santosh Harish Pablo Arrabal Haro Olivier Ilbert Jeyhan S. Kartaltepe Anton M. Koekemoer Daizhong Liu Arianna S. Long Henry Joy McCracken Louise Paquereau Casey Papovich Nor Pirzkal Jason Rhodes Brant E. Robertson Marko Shuntov Sune Toft Guang Yang Guillermo Barro Laura Bisigello Véronique Buat Jaclyn B. Champagne Olivia Cooper Luca Costantin Alexander de la Vega Nicole E. Drakos Andreas Faisst Adriano Fontana Seiji Fujimoto Steven Gillman Carlos Gómez-Guijarro Ghassem Gozaliasl Nimish P. Hathi Christopher C. Hayward Michaela Hirschmann Benne W. Holwerda Shuowen Jin Dale D. Kocevski Vasily Kokorev Erini Lambrides Ray A. Lucas Georgios E. Magdis Benjamin Magnelli Jed McKinney Bahram Mobasher Pablo G. Pérez-González R. Michael Rich Lise-Marie Seillé Margherita Talia C. Megan Urry Francesco Valentino Katherine E. Whitaker L. Y. Aaron Yung Jorge Zavala the COSMOS-Web and CEERS teams |
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Hollis B. Akins |
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10.3847/1538-4357/acef21 |
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verfasserin |
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two massive, compact, and dust-obscured candidate z ≃ 8 galaxies discovered by jwst |
| callnumber |
QB460-466 |
| title_auth |
Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST |
| abstract |
We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. |
| abstractGer |
We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. |
| abstract_unstemmed |
We present a search for extremely red, dust-obscured, z < 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys. Based on their red color in F277W−F444W (∼2.5 mag) and detection in MIRI/F770W (∼25 mag), we identify two galaxies, COS-z8M1 and CEERS-z7M1, that have best-fit photometric redshifts of $z={8.4}_{-0.4}^{+0.3}$ and ${7.6}_{-0.1}^{+0.1}$ , respectively. We perform spectral energy distribution fitting with a variety of codes (including bagpipes , prospector , beagle , and cigale ) and find a <95% probability that these indeed lie at z < 7. Both sources are compact ( R _eff ≲ 200 pc) and highly obscured ( A _V ∼ 1.5–2.5) and, at our best-fit redshift estimates, likely have strong [O iii ]+H β emission contributing to their 4.4 μ m photometry. We estimate stellar masses of ∼10 ^10 M _⊙ for both sources; by virtue of detection in MIRI at 7.7 μ m, these measurements are robust to the inclusion of bright emission lines, for example, from an active galactic nucleus. We identify a marginal (2.9 σ ) Atacama Large Millimeter/submillimeter Array detection at 2 mm within 0.″5 of COS-z8M1, which, if real, would suggest a remarkably high IR luminosity of ∼10 ^12 L _⊙ . These two galaxies, if confirmed at z ∼ 8, would be extreme in their stellar and dust masses and may be representative of a substantial population of highly dust-obscured galaxies at cosmic dawn. |
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| container_issue |
1, p 61 |
| title_short |
Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST |
| url |
https://doi.org/10.3847/1538-4357/acef21 https://doaj.org/article/43e76fbe19ce4d06b96fea96fe4c914e https://doaj.org/toc/1538-4357 |
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Caitlin M. Casey Natalie Allen Micaela B. Bagley Mark Dickinson Steven L. Finkelstein Maximilien Franco Santosh Harish Pablo Arrabal Haro Olivier Ilbert Jeyhan S. Kartaltepe Anton M. Koekemoer Daizhong Liu Arianna S. Long Henry Joy McCracken Louise Paquereau Casey Papovich Nor Pirzkal Jason Rhodes Brant E. Robertson Marko Shuntov Sune Toft Guang Yang Guillermo Barro Laura Bisigello Véronique Buat Jaclyn B. Champagne Olivia Cooper Luca Costantin Alexander de la Vega Nicole E. Drakos Andreas Faisst Adriano Fontana Seiji Fujimoto Steven Gillman Carlos Gómez-Guijarro Ghassem Gozaliasl Nimish P. Hathi Christopher C. Hayward Michaela Hirschmann Benne W. Holwerda Shuowen Jin Dale D. Kocevski Vasily Kokorev Erini Lambrides Ray A. Lucas Georgios E. Magdis Benjamin Magnelli Jed McKinney Bahram Mobasher Pablo G. Pérez-González R. Michael Rich Lise-Marie Seillé Margherita Talia C. Megan Urry Francesco Valentino Katherine E. Whitaker L. Y. Aaron Yung Jorge Zavala the COSMOS-Web and CEERS teams |
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Caitlin M. Casey Natalie Allen Micaela B. Bagley Mark Dickinson Steven L. Finkelstein Maximilien Franco Santosh Harish Pablo Arrabal Haro Olivier Ilbert Jeyhan S. Kartaltepe Anton M. Koekemoer Daizhong Liu Arianna S. Long Henry Joy McCracken Louise Paquereau Casey Papovich Nor Pirzkal Jason Rhodes Brant E. Robertson Marko Shuntov Sune Toft Guang Yang Guillermo Barro Laura Bisigello Véronique Buat Jaclyn B. Champagne Olivia Cooper Luca Costantin Alexander de la Vega Nicole E. Drakos Andreas Faisst Adriano Fontana Seiji Fujimoto Steven Gillman Carlos Gómez-Guijarro Ghassem Gozaliasl Nimish P. Hathi Christopher C. Hayward Michaela Hirschmann Benne W. Holwerda Shuowen Jin Dale D. Kocevski Vasily Kokorev Erini Lambrides Ray A. Lucas Georgios E. Magdis Benjamin Magnelli Jed McKinney Bahram Mobasher Pablo G. Pérez-González R. Michael Rich Lise-Marie Seillé Margherita Talia C. Megan Urry Francesco Valentino Katherine E. Whitaker L. Y. Aaron Yung Jorge Zavala the COSMOS-Web and CEERS teams |
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