The Cosmos in its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N
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arXiv
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| Natura: | Preprint |
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2023
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| author | Hainline, Kevin N. Johnson, Benjamin D. Robertson, Brant Tacchella, Sandro Helton, Jakob M. Sun, Fengwu Eisenstein, Daniel J. Simmonds, Charlotte Topping, Michael W. Whitler, Lily Willmer, Christopher N. A. Rieke, Marcia Suess, Katherine A. Hviding, Raphael E. Cameron, Alex J. Alberts, Stacey Baker, William M. Bhatawdekar, Rachana Boyett, Kristan Bunker, Andrew J. Carniani, Stefano Charlot, Stephane Chen, Zuyi Curti, Mirko Curtis-Lake, Emma D'Eugenio, Francesco Egami, Eiichi Endsley, Ryan Hausen, Ryan Ji, Zhiyuan Looser, Tobias J. Lyu, Jianwei Maiolino, Roberto Nelson, Erica Puskas, David Rawle, Tim Sandles, Lester Saxena, Aayush Smit, Renske Stark, Daniel P. Williams, Christina C. Willott, Chris Witstok, Joris |
| author_facet | Hainline, Kevin N. Johnson, Benjamin D. Robertson, Brant Tacchella, Sandro Helton, Jakob M. Sun, Fengwu Eisenstein, Daniel J. Simmonds, Charlotte Topping, Michael W. Whitler, Lily Willmer, Christopher N. A. Rieke, Marcia Suess, Katherine A. Hviding, Raphael E. Cameron, Alex J. Alberts, Stacey Baker, William M. Bhatawdekar, Rachana Boyett, Kristan Bunker, Andrew J. Carniani, Stefano Charlot, Stephane Chen, Zuyi Curti, Mirko Curtis-Lake, Emma D'Eugenio, Francesco Egami, Eiichi Endsley, Ryan Hausen, Ryan Ji, Zhiyuan Looser, Tobias J. Lyu, Jianwei Maiolino, Roberto Nelson, Erica Puskas, David Rawle, Tim Sandles, Lester Saxena, Aayush Smit, Renske Stark, Daniel P. Williams, Christina C. Willott, Chris Witstok, Joris |
| contents | We present a catalog of 717 candidate galaxies at $z > 8$ selected from 125 square arcminutes of NIRCam imaging as part of the JWST Advanced Deep Extragalactic Survey (JADES). We combine the full JADES imaging dataset with data from the JEMS and FRESCO JWST surveys along with extremely deep existing observations from HST/ACS for a final filter set that includes fifteen JWST/NIRCam filters and five HST/ACS filters. The high-redshift galaxy candidates were selected from their estimated photometric redshifts calculated using a template fitting approach, followed by visual inspection from seven independent reviewers. We explore these candidates in detail, highlighting interesting resolved or extended sources, sources with very red long-wavelength slopes, and our highest redshift candidates, which extend to $z_{phot} = 18$. We also investigate potential contamination by stellar objects, and do not find strong evidence from SED fitting that these faint high-redshift galaxy candidates are low-mass stars. Over 93\% of the sources are newly identified from our deep JADES imaging, including 31 new galaxy candidates at $z_{phot} > 12$. Using 42 sources in our sample with measured spectroscopic redshifts from NIRSpec and FRESCO, we find excellent agreement to our photometric redshift estimates, with no catastrophic outliers and an average difference of $\langle Δz = z_{phot}- z_{spec} \rangle= 0.26$. These sources comprise one of the most robust samples for probing the early buildup of galaxies within the first few hundred million years of the Universe's history. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_02468 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | The Cosmos in its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N Hainline, Kevin N. Johnson, Benjamin D. Robertson, Brant Tacchella, Sandro Helton, Jakob M. Sun, Fengwu Eisenstein, Daniel J. Simmonds, Charlotte Topping, Michael W. Whitler, Lily Willmer, Christopher N. A. Rieke, Marcia Suess, Katherine A. Hviding, Raphael E. Cameron, Alex J. Alberts, Stacey Baker, William M. Bhatawdekar, Rachana Boyett, Kristan Bunker, Andrew J. Carniani, Stefano Charlot, Stephane Chen, Zuyi Curti, Mirko Curtis-Lake, Emma D'Eugenio, Francesco Egami, Eiichi Endsley, Ryan Hausen, Ryan Ji, Zhiyuan Looser, Tobias J. Lyu, Jianwei Maiolino, Roberto Nelson, Erica Puskas, David Rawle, Tim Sandles, Lester Saxena, Aayush Smit, Renske Stark, Daniel P. Williams, Christina C. Willott, Chris Witstok, Joris Astrophysics of Galaxies We present a catalog of 717 candidate galaxies at $z > 8$ selected from 125 square arcminutes of NIRCam imaging as part of the JWST Advanced Deep Extragalactic Survey (JADES). We combine the full JADES imaging dataset with data from the JEMS and FRESCO JWST surveys along with extremely deep existing observations from HST/ACS for a final filter set that includes fifteen JWST/NIRCam filters and five HST/ACS filters. The high-redshift galaxy candidates were selected from their estimated photometric redshifts calculated using a template fitting approach, followed by visual inspection from seven independent reviewers. We explore these candidates in detail, highlighting interesting resolved or extended sources, sources with very red long-wavelength slopes, and our highest redshift candidates, which extend to $z_{phot} = 18$. We also investigate potential contamination by stellar objects, and do not find strong evidence from SED fitting that these faint high-redshift galaxy candidates are low-mass stars. Over 93\% of the sources are newly identified from our deep JADES imaging, including 31 new galaxy candidates at $z_{phot} > 12$. Using 42 sources in our sample with measured spectroscopic redshifts from NIRSpec and FRESCO, we find excellent agreement to our photometric redshift estimates, with no catastrophic outliers and an average difference of $\langle Δz = z_{phot}- z_{spec} \rangle= 0.26$. These sources comprise one of the most robust samples for probing the early buildup of galaxies within the first few hundred million years of the Universe's history. |
| title | The Cosmos in its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2306.02468 |