Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1
We present measurements of stellar populations properties of a z = 9.1 gravitationally lensed galaxy MACS1149-JD1 using deep James Webb Space Telescope NIRISS slitless spectroscopy as well as NIRISS and NIRCam imaging from the CAnadian NIRISS Unbiased Cluster Survey (CANUCS). The galaxy is split int...
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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 Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/ad0e73 |
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| author | Maruša Bradač Victoria Strait Lamiya Mowla Kartheik G. Iyer Gaël Noirot Chris Willott Gabe Brammer Roberto Abraham Yoshihisa Asada Guillaume Desprez Vince Estrada-Carpenter Anishya Harshan Nicholas S. Martis Jasleen Matharu Adam Muzzin Gregor Rihtaršič Ghassan T. E. Sarrouh Marcin Sawicki |
| author_facet | Maruša Bradač Victoria Strait Lamiya Mowla Kartheik G. Iyer Gaël Noirot Chris Willott Gabe Brammer Roberto Abraham Yoshihisa Asada Guillaume Desprez Vince Estrada-Carpenter Anishya Harshan Nicholas S. Martis Jasleen Matharu Adam Muzzin Gregor Rihtaršič Ghassan T. E. Sarrouh Marcin Sawicki |
| author_sort | Maruša Bradač |
| collection | DOAJ |
| description | We present measurements of stellar populations properties of a z = 9.1 gravitationally lensed galaxy MACS1149-JD1 using deep James Webb Space Telescope NIRISS slitless spectroscopy as well as NIRISS and NIRCam imaging from the CAnadian NIRISS Unbiased Cluster Survey (CANUCS). The galaxy is split into four components. Three magnified ( μ ∼ 11) star-forming components are unresolved, giving intrinsic sizes of <25 pc. In addition, the underlying extended component contains the bulk of the stellar mass, formed the majority of its stars ∼50 Myr earlier than the other three components, and is not the site of the most active star formation currently. The NIRISS and NIRCam resolved photometry does not confirm a strong Balmer break previously seen in Spitzer. The NIRISS grism spectrum has been extracted for the entire galaxy and shows a clear continuum and Lyman break, with no Ly α detected. |
| first_indexed | 2024-03-08T13:28:01Z |
| format | Article |
| id | doaj.art-f1c6ede021ea42e087706b9e6a6a54bd |
| institution | Directory Open Access Journal |
| issn | 2041-8205 |
| language | English |
| last_indexed | 2024-03-08T13:28:01Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj.art-f1c6ede021ea42e087706b9e6a6a54bd2024-01-17T14:18:35ZengIOP PublishingThe Astrophysical Journal Letters2041-82052024-01-019611L2110.3847/2041-8213/ad0e73Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1Maruša Bradač0https://orcid.org/0000-0001-5984-0395Victoria Strait1https://orcid.org/0000-0002-6338-7295Lamiya Mowla2https://orcid.org/0000-0002-8530-9765Kartheik G. Iyer3https://orcid.org/0000-0001-9298-3523Gaël Noirot4Chris Willott5https://orcid.org/0000-0002-4201-7367Gabe Brammer6https://orcid.org/0000-0003-2680-005XRoberto Abraham7https://orcid.org/0000-0002-4542-921XYoshihisa Asada8https://orcid.org/0000-0003-3983-5438Guillaume Desprez9https://orcid.org/0000-0001-8325-1742Vince Estrada-Carpenter10Anishya Harshan11https://orcid.org/0000-0001-9414-6382Nicholas S. Martis12https://orcid.org/0000-0003-3243-9969Jasleen Matharu13https://orcid.org/0000-0002-7547-3385Adam Muzzin14Gregor Rihtaršič15https://orcid.org/0009-0009-4388-898XGhassan T. E. Sarrouh16https://orcid.org/0000-0001-8830-2166Marcin Sawicki17https://orcid.org/0000-0002-7712-7857University of Ljubljana , Department of Mathematics and Physics, Jadranska ulica 19, SI-1000 Ljubljana, Slovenia; Department of Physics and Astronomy, University of California Davis , 1 Shields Avenue, Davis, CA 95616, USACosmic Dawn Center (DAWN) , Denmark; Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen N, DenmarkWhitin Observatory, Department of Physics and Astronomy, Wellesley College , 106 Central Street, Wellesley, MA 02481, USA; Dunlap Institute for Astronomy and Astrophysics , 50 St. George Street, Toronto, Ontario, M5S 3H4, CanadaDunlap Institute for Astronomy and Astrophysics , 50 St. George Street, Toronto, Ontario, M5S 3H4, CanadaDepartment of Astronomy and Physics and Institute for Computational Astrophysics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, CanadaNRC Herzberg , 5071 West Saanich Road, Victoria, BC V9E 2E7, CanadaCosmic Dawn Center (DAWN) , Denmark; Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen N, DenmarkDavid A. Dunlap Department of Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, Ontario M5S 3H4, CanadaDepartment of Astronomy and Physics and Institute for Computational Astrophysics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada; Department of Astronomy, Kyoto University , Sakyo-ku, Kyoto 606-8502, JapanDepartment of Astronomy and Physics and Institute for Computational Astrophysics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, CanadaDepartment of Astronomy and Physics and Institute for Computational Astrophysics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, CanadaUniversity of Ljubljana , Department of Mathematics and Physics, Jadranska ulica 19, SI-1000 Ljubljana, SloveniaUniversity of Ljubljana , Department of Mathematics and Physics, Jadranska ulica 19, SI-1000 Ljubljana, Slovenia; Department of Astronomy and Physics and Institute for Computational Astrophysics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada; National Research Council of Canada, Herzberg Astronomy & Astrophysics Research Centre , 5071 West Saanich Road, Victoria, BC V9E 2E7, CanadaCosmic Dawn Center (DAWN) , Denmark; Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen N, DenmarkDepartment of Physics and Astronomy, York University , 4700 Keele Street, Toronto, Ontario, M3J 1P3, CanadaUniversity of Ljubljana , Department of Mathematics and Physics, Jadranska ulica 19, SI-1000 Ljubljana, SloveniaDepartment of Physics and Astronomy, York University , 4700 Keele Street, Toronto, Ontario, M3J 1P3, CanadaDepartment of Astronomy and Physics and Institute for Computational Astrophysics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, CanadaWe present measurements of stellar populations properties of a z = 9.1 gravitationally lensed galaxy MACS1149-JD1 using deep James Webb Space Telescope NIRISS slitless spectroscopy as well as NIRISS and NIRCam imaging from the CAnadian NIRISS Unbiased Cluster Survey (CANUCS). The galaxy is split into four components. Three magnified ( μ ∼ 11) star-forming components are unresolved, giving intrinsic sizes of <25 pc. In addition, the underlying extended component contains the bulk of the stellar mass, formed the majority of its stars ∼50 Myr earlier than the other three components, and is not the site of the most active star formation currently. The NIRISS and NIRCam resolved photometry does not confirm a strong Balmer break previously seen in Spitzer. The NIRISS grism spectrum has been extracted for the entire galaxy and shows a clear continuum and Lyman break, with no Ly α detected.https://doi.org/10.3847/2041-8213/ad0e73High-redshift galaxiesGravitational lensingReionization |
| spellingShingle | Maruša Bradač Victoria Strait Lamiya Mowla Kartheik G. Iyer Gaël Noirot Chris Willott Gabe Brammer Roberto Abraham Yoshihisa Asada Guillaume Desprez Vince Estrada-Carpenter Anishya Harshan Nicholas S. Martis Jasleen Matharu Adam Muzzin Gregor Rihtaršič Ghassan T. E. Sarrouh Marcin Sawicki Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1 The Astrophysical Journal Letters High-redshift galaxies Gravitational lensing Reionization |
| title | Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1 |
| title_full | Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1 |
| title_fullStr | Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1 |
| title_full_unstemmed | Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1 |
| title_short | Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1 |
| title_sort | star formation at the epoch of reionization with canucs the ages of stellar populations in macs1149 jd1 |
| topic | High-redshift galaxies Gravitational lensing Reionization |
| url | https://doi.org/10.3847/2041-8213/ad0e73 |
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