Weak-Lensing Analysis of the Complex Cluster Merger Abell 746 with Subaru/Hyper Suprime-Cam
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| author | HyeongHan, Kim Cho, Hyejeon Jee, M. James Wittman, David Cha, Sangjun Lee, Wonki Finner, Kyle Rajpurohit, Kamlesh Brüggen, Marcus Forman, William Jones, Christine van Weeren, Reinout Botteon, Andrea Lovisari, Lorenzo Stroe, Andra Domínguez-Fernández, Paola O'Sullivan, Ewan Vrtilek, Jan |
| author_facet | HyeongHan, Kim Cho, Hyejeon Jee, M. James Wittman, David Cha, Sangjun Lee, Wonki Finner, Kyle Rajpurohit, Kamlesh Brüggen, Marcus Forman, William Jones, Christine van Weeren, Reinout Botteon, Andrea Lovisari, Lorenzo Stroe, Andra Domínguez-Fernández, Paola O'Sullivan, Ewan Vrtilek, Jan |
| contents | The galaxy cluster Abell 746 (A746; $z$=0.214), featuring a double radio relic system, two isolated radio relics, a possible radio halo, disturbed V-shaped X-ray emission, and intricate galaxy distributions, is a unique and complex merging system. We present a weak-lensing analysis of A746 based on wide-field imaging data from Subaru/Hyper Suprime-Cam observations. The mass distribution is characterized by a main peak which coincides with the center of the X-ray emission. At this main peak, we detect two extensions toward the north and west, tracing the cluster galaxy and X-ray distributions. Despite the ongoing merger, our estimate of the A746 global mass $M_{500}=4.4\pm1.0\times10^{14}~M_{\odot}$ is consistent with the previous results from SZ and X-ray observations. We conclude that reconciling the distributions of mass, galaxies, and intracluster medium with the double radio relic system and other radio features remains challenging. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_00643 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Weak-Lensing Analysis of the Complex Cluster Merger Abell 746 with Subaru/Hyper Suprime-Cam HyeongHan, Kim Cho, Hyejeon Jee, M. James Wittman, David Cha, Sangjun Lee, Wonki Finner, Kyle Rajpurohit, Kamlesh Brüggen, Marcus Forman, William Jones, Christine van Weeren, Reinout Botteon, Andrea Lovisari, Lorenzo Stroe, Andra Domínguez-Fernández, Paola O'Sullivan, Ewan Vrtilek, Jan Astrophysics of Galaxies The galaxy cluster Abell 746 (A746; $z$=0.214), featuring a double radio relic system, two isolated radio relics, a possible radio halo, disturbed V-shaped X-ray emission, and intricate galaxy distributions, is a unique and complex merging system. We present a weak-lensing analysis of A746 based on wide-field imaging data from Subaru/Hyper Suprime-Cam observations. The mass distribution is characterized by a main peak which coincides with the center of the X-ray emission. At this main peak, we detect two extensions toward the north and west, tracing the cluster galaxy and X-ray distributions. Despite the ongoing merger, our estimate of the A746 global mass $M_{500}=4.4\pm1.0\times10^{14}~M_{\odot}$ is consistent with the previous results from SZ and X-ray observations. We conclude that reconciling the distributions of mass, galaxies, and intracluster medium with the double radio relic system and other radio features remains challenging. |
| title | Weak-Lensing Analysis of the Complex Cluster Merger Abell 746 with Subaru/Hyper Suprime-Cam |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2311.00643 |