Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.18341 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914986920509440 |
|---|---|
| author | Ramakrishnan, Vandana Lee, Kyoung-Soo Firestone, Nicole Gawiser, Eric Artale, Maria Celeste Gronwall, Caryl Guaita, Lucia Im, Sang Hyeok Jeong, Woong-Seob Kim, Seongjae Kumar, Ankit Lee, Jaehyun Moon, Byeongha Padilla, Nelson Park, Changbom Song, Hyunmi Troncoso, Paulina Yang, Yujin |
| author_facet | Ramakrishnan, Vandana Lee, Kyoung-Soo Firestone, Nicole Gawiser, Eric Artale, Maria Celeste Gronwall, Caryl Guaita, Lucia Im, Sang Hyeok Jeong, Woong-Seob Kim, Seongjae Kumar, Ankit Lee, Jaehyun Moon, Byeongha Padilla, Nelson Park, Changbom Song, Hyunmi Troncoso, Paulina Yang, Yujin |
| contents | The One-hundred-deg$^2$ DECam Imaging in Narrowbands (ODIN) survey is carrying out a systematic search for protoclusters during Cosmic Noon, using Ly$α$-emitting galaxies (LAEs) as tracers. Once completed, ODIN aims to identify hundreds of protoclusters at redshifts of 2.4, 3.1, and 4.5 across seven extragalactic fields, covering a total area of up to 91~deg$^2$. In this work, we report strong clustering of high-redshift protoclusters through the protocluster-LAE cross-correlation function measurements of 150 protocluster candidates at $z~=~2.4$ and 3.1, identified in two ODIN fields with a total area of 13.9 deg$^2$. At $z~=~2.4$ and 3.1, respectively, the inferred protocluster biases are $6.6^{+1.3}_{-1.1}$ and $6.1^{+1.3}_{-1.1}$, corresponding to mean halo masses of $\log \langle M /M_\odot\rangle = 13.53^{+0.21}_{-0.24}$ and $12.96^{+0.28}_{-0.33}$. By the present day, these protoclusters are expected to evolve into virialized galaxy clusters with a mean mass of $\sim$ $10^{14.5}~M_\odot$. By comparing the observed number density of protoclusters to that of halos with the measured clustering strength, we find that our sample is highly complete. Finally, the similar descendant masses derived for our samples at $z=2.4$ and 3.1 assuming that the halo number density remains constant suggest that they represent similar structures observed at different cosmic epochs. As a consequence, any observed differences between the two samples can be understood as redshift evolution. The ODIN protocluster samples will thus provide valuable insights into the cosmic evolution of cluster galaxies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_18341 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | ODIN: Strong Clustering of Protoclusters at Cosmic Noon Ramakrishnan, Vandana Lee, Kyoung-Soo Firestone, Nicole Gawiser, Eric Artale, Maria Celeste Gronwall, Caryl Guaita, Lucia Im, Sang Hyeok Jeong, Woong-Seob Kim, Seongjae Kumar, Ankit Lee, Jaehyun Moon, Byeongha Padilla, Nelson Park, Changbom Song, Hyunmi Troncoso, Paulina Yang, Yujin Astrophysics of Galaxies The One-hundred-deg$^2$ DECam Imaging in Narrowbands (ODIN) survey is carrying out a systematic search for protoclusters during Cosmic Noon, using Ly$α$-emitting galaxies (LAEs) as tracers. Once completed, ODIN aims to identify hundreds of protoclusters at redshifts of 2.4, 3.1, and 4.5 across seven extragalactic fields, covering a total area of up to 91~deg$^2$. In this work, we report strong clustering of high-redshift protoclusters through the protocluster-LAE cross-correlation function measurements of 150 protocluster candidates at $z~=~2.4$ and 3.1, identified in two ODIN fields with a total area of 13.9 deg$^2$. At $z~=~2.4$ and 3.1, respectively, the inferred protocluster biases are $6.6^{+1.3}_{-1.1}$ and $6.1^{+1.3}_{-1.1}$, corresponding to mean halo masses of $\log \langle M /M_\odot\rangle = 13.53^{+0.21}_{-0.24}$ and $12.96^{+0.28}_{-0.33}$. By the present day, these protoclusters are expected to evolve into virialized galaxy clusters with a mean mass of $\sim$ $10^{14.5}~M_\odot$. By comparing the observed number density of protoclusters to that of halos with the measured clustering strength, we find that our sample is highly complete. Finally, the similar descendant masses derived for our samples at $z=2.4$ and 3.1 assuming that the halo number density remains constant suggest that they represent similar structures observed at different cosmic epochs. As a consequence, any observed differences between the two samples can be understood as redshift evolution. The ODIN protocluster samples will thus provide valuable insights into the cosmic evolution of cluster galaxies. |
| title | ODIN: Strong Clustering of Protoclusters at Cosmic Noon |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2410.18341 |