Elentári: A $z\sim3.3$ Proto-Supercluster in COSMOS
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| Format: | Preprint |
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2023
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| author | Forrest, Ben Lemaux, Brian C. Shah, Ekta Staab, Priti McConachie, Ian Cucciati, Olga Gal, Roy R. Hung, Denise Lubin, Lori M. Cassarà, Letizia P. Cassata, Paolo Chang, Wenjun Cooper, M. C. Decarli, Roberto Gomez, Percy Gururajan, Gayathri Hathi, Nimish Kashino, Daichi Marchesini, Danilo Marsan, Z. Cemile McDonald, Michael Muzzin, Adam Shen, Lu Stawinski, Stephanie Urbano Talia, Margherita Vergani, Daniela Wilson, Gillian Zamorani, Giovanni |
| author_facet | Forrest, Ben Lemaux, Brian C. Shah, Ekta Staab, Priti McConachie, Ian Cucciati, Olga Gal, Roy R. Hung, Denise Lubin, Lori M. Cassarà, Letizia P. Cassata, Paolo Chang, Wenjun Cooper, M. C. Decarli, Roberto Gomez, Percy Gururajan, Gayathri Hathi, Nimish Kashino, Daichi Marchesini, Danilo Marsan, Z. Cemile McDonald, Michael Muzzin, Adam Shen, Lu Stawinski, Stephanie Urbano Talia, Margherita Vergani, Daniela Wilson, Gillian Zamorani, Giovanni |
| contents | Motivated by spectroscopic confirmation of three overdense regions in the COSMOS field at $z\sim3.35$, we analyze the uniquely deep multi-wavelength photometry and extensive spectroscopy available in the field to identify any further related structure. We construct a three dimensional density map using the Voronoi tesselation Monte Carlo method and find additional regions of significant overdensity. Here we present and examine a set of six overdense structures at $3.20<z<3.45$ in the COSMOS field, the most well characterized of which, PCl~J0959+0235, has 80 spectroscopically confirmed members and an estimated mass of $1.35\times 10^{15}$~M$_\odot$, and is modeled to virialize at $z\sim1.5-2.0$. These structures contain ten overdense peaks with $>5σ$ overdensity separated by up to 70 cMpc, suggestive of a proto-supercluster similar to the Hyperion system at $z\sim2.45$. Upcoming photometric surveys with JWST such as COSMOS-Web, and further spectroscopic follow-up will enable more extensive analysis of the evolutionary effects that such an environment may have on its component galaxies at these early times. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_15113 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Elentári: A $z\sim3.3$ Proto-Supercluster in COSMOS Forrest, Ben Lemaux, Brian C. Shah, Ekta Staab, Priti McConachie, Ian Cucciati, Olga Gal, Roy R. Hung, Denise Lubin, Lori M. Cassarà, Letizia P. Cassata, Paolo Chang, Wenjun Cooper, M. C. Decarli, Roberto Gomez, Percy Gururajan, Gayathri Hathi, Nimish Kashino, Daichi Marchesini, Danilo Marsan, Z. Cemile McDonald, Michael Muzzin, Adam Shen, Lu Stawinski, Stephanie Urbano Talia, Margherita Vergani, Daniela Wilson, Gillian Zamorani, Giovanni Astrophysics of Galaxies Motivated by spectroscopic confirmation of three overdense regions in the COSMOS field at $z\sim3.35$, we analyze the uniquely deep multi-wavelength photometry and extensive spectroscopy available in the field to identify any further related structure. We construct a three dimensional density map using the Voronoi tesselation Monte Carlo method and find additional regions of significant overdensity. Here we present and examine a set of six overdense structures at $3.20<z<3.45$ in the COSMOS field, the most well characterized of which, PCl~J0959+0235, has 80 spectroscopically confirmed members and an estimated mass of $1.35\times 10^{15}$~M$_\odot$, and is modeled to virialize at $z\sim1.5-2.0$. These structures contain ten overdense peaks with $>5σ$ overdensity separated by up to 70 cMpc, suggestive of a proto-supercluster similar to the Hyperion system at $z\sim2.45$. Upcoming photometric surveys with JWST such as COSMOS-Web, and further spectroscopic follow-up will enable more extensive analysis of the evolutionary effects that such an environment may have on its component galaxies at these early times. |
| title | Elentári: A $z\sim3.3$ Proto-Supercluster in COSMOS |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2307.15113 |