Targeting cluster galaxies for the 4MOST CHANCES Low-z sub-survey with photometric redshifts
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arXiv
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| Natura: | Preprint |
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2025
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| author | Méndez-Hernández, Hugo Lima-Dias, Ciria Monachesi, Antonela Jaffé, Yara L. Haines, Christopher P. Teixeira, Gabriel S. M. Lösch, Elismar Baier-Soto, Raúl Lima, Erik V. R. M., Amrutha B. Bom, C. R. D'Ago, Giuseppe Demarco, Ricardo Finoguenov, Alexis Haack, Rodrigo F. Lopes, Amanda R. de Oliveira, C. Mendes Merluzzi, Paola Piraino-Cerda, Franco Castelli, Analía V. Smith Sif'on, Cristobal Sodré Jr, Laerte Tejos, Nicolás Torres-Flores, Sergio Argudo-Fernández, Maria Crossett, Jacob P. Ibar, E. Kuchner, Ulrike Lacerna, Ivan Lopes-Silva, Vitor H. Lopez, Sebastián McGee, Sean Morelli, Lorenzo Nantais, Julie V., Patricio Olivares Pallero, Diego Poggianti, Bianca M. Pompei, Emanuela Sampaio, V. M. Vulcani, Benedetta Zenteno, Alfredo Almeida-Fernandes, F. Bilicki, Maciej Carvalho, M. S. Cheng, Cheng Figueiredo, A. L. Gutiérrez-Soto, L. A. Herpich, F. R. Kanaan, A. Lacerda, E A. D. Nakazono, L. Schwarz, G. B. Oliveira Ribeiro, T. Roukema, Boudewijn F. Sartori, Marília J. Santos-Silva, Thaís Schoenell, W. |
| author_facet | Méndez-Hernández, Hugo Lima-Dias, Ciria Monachesi, Antonela Jaffé, Yara L. Haines, Christopher P. Teixeira, Gabriel S. M. Lösch, Elismar Baier-Soto, Raúl Lima, Erik V. R. M., Amrutha B. Bom, C. R. D'Ago, Giuseppe Demarco, Ricardo Finoguenov, Alexis Haack, Rodrigo F. Lopes, Amanda R. de Oliveira, C. Mendes Merluzzi, Paola Piraino-Cerda, Franco Castelli, Analía V. Smith Sif'on, Cristobal Sodré Jr, Laerte Tejos, Nicolás Torres-Flores, Sergio Argudo-Fernández, Maria Crossett, Jacob P. Ibar, E. Kuchner, Ulrike Lacerna, Ivan Lopes-Silva, Vitor H. Lopez, Sebastián McGee, Sean Morelli, Lorenzo Nantais, Julie V., Patricio Olivares Pallero, Diego Poggianti, Bianca M. Pompei, Emanuela Sampaio, V. M. Vulcani, Benedetta Zenteno, Alfredo Almeida-Fernandes, F. Bilicki, Maciej Carvalho, M. S. Cheng, Cheng Figueiredo, A. L. Gutiérrez-Soto, L. A. Herpich, F. R. Kanaan, A. Lacerda, E A. D. Nakazono, L. Schwarz, G. B. Oliveira Ribeiro, T. Roukema, Boudewijn F. Sartori, Marília J. Santos-Silva, Thaís Schoenell, W. |
| contents | The evolution of galaxies is shaped by both internal processes and their external environments. Galaxy clusters and their surroundings provide ideal laboratories to study these effects, particularly mechanisms such as quenching and morphological transformation. The Chilean Cluster galaxy Evolution Survey (CHANCES) Low-z sub-survey is part of the CHileAN Cluster galaxy Evolution Survey, a 4MOST community survey designed to uncover the relationship between the formation and evolution of galaxies and hierarchical structure formation as it happens, through deep and wide multi-object spectroscopy. We present the target selection strategy followed to select galaxy cluster candidate members for the CHANCES low-z sub-survey, in and around 50 clusters and two superclusters at z<0.07, out to (5XR200) and down to mr= 20.4. Combining public photometric redshift estimates from the DESI Legacy Imaging Survey and T80S/S-PLUS iDR5, with custom photometric redshifts, we identify likely galaxy cluster candidate members whose photometric redshifts are consistent with being at the known redshift of the cluster and measure the average deviations of their photometric redshifts with respect to the spectroscopic redshift measurements σNMAD. We have successfully compiled our CHANCES-low-redshift catalogues, split into three different sub-surveys: low-z bright (mr<18.5), low-z faint (18.5<=mr<20.4) and low-z faint supplementary, by selecting>= 500,000 galaxy cluster candidate members and including confirmed spectroscopic galaxy cluster members, from which we expect to obtain 4MOST low-resolution (R~6500) spectra for ~320,000 galaxies. The CHANCES Low-z target catalogues form a statistically robust sample for spectroscopic follow-up, allowing studies of galaxy evolution and environmental effects in nearby cluster and supercluster environments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_19958 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Targeting cluster galaxies for the 4MOST CHANCES Low-z sub-survey with photometric redshifts Méndez-Hernández, Hugo Lima-Dias, Ciria Monachesi, Antonela Jaffé, Yara L. Haines, Christopher P. Teixeira, Gabriel S. M. Lösch, Elismar Baier-Soto, Raúl Lima, Erik V. R. M., Amrutha B. Bom, C. R. D'Ago, Giuseppe Demarco, Ricardo Finoguenov, Alexis Haack, Rodrigo F. Lopes, Amanda R. de Oliveira, C. Mendes Merluzzi, Paola Piraino-Cerda, Franco Castelli, Analía V. Smith Sif'on, Cristobal Sodré Jr, Laerte Tejos, Nicolás Torres-Flores, Sergio Argudo-Fernández, Maria Crossett, Jacob P. Ibar, E. Kuchner, Ulrike Lacerna, Ivan Lopes-Silva, Vitor H. Lopez, Sebastián McGee, Sean Morelli, Lorenzo Nantais, Julie V., Patricio Olivares Pallero, Diego Poggianti, Bianca M. Pompei, Emanuela Sampaio, V. M. Vulcani, Benedetta Zenteno, Alfredo Almeida-Fernandes, F. Bilicki, Maciej Carvalho, M. S. Cheng, Cheng Figueiredo, A. L. Gutiérrez-Soto, L. A. Herpich, F. R. Kanaan, A. Lacerda, E A. D. Nakazono, L. Schwarz, G. B. Oliveira Ribeiro, T. Roukema, Boudewijn F. Sartori, Marília J. Santos-Silva, Thaís Schoenell, W. Astrophysics of Galaxies The evolution of galaxies is shaped by both internal processes and their external environments. Galaxy clusters and their surroundings provide ideal laboratories to study these effects, particularly mechanisms such as quenching and morphological transformation. The Chilean Cluster galaxy Evolution Survey (CHANCES) Low-z sub-survey is part of the CHileAN Cluster galaxy Evolution Survey, a 4MOST community survey designed to uncover the relationship between the formation and evolution of galaxies and hierarchical structure formation as it happens, through deep and wide multi-object spectroscopy. We present the target selection strategy followed to select galaxy cluster candidate members for the CHANCES low-z sub-survey, in and around 50 clusters and two superclusters at z<0.07, out to (5XR200) and down to mr= 20.4. Combining public photometric redshift estimates from the DESI Legacy Imaging Survey and T80S/S-PLUS iDR5, with custom photometric redshifts, we identify likely galaxy cluster candidate members whose photometric redshifts are consistent with being at the known redshift of the cluster and measure the average deviations of their photometric redshifts with respect to the spectroscopic redshift measurements σNMAD. We have successfully compiled our CHANCES-low-redshift catalogues, split into three different sub-surveys: low-z bright (mr<18.5), low-z faint (18.5<=mr<20.4) and low-z faint supplementary, by selecting>= 500,000 galaxy cluster candidate members and including confirmed spectroscopic galaxy cluster members, from which we expect to obtain 4MOST low-resolution (R~6500) spectra for ~320,000 galaxies. The CHANCES Low-z target catalogues form a statistically robust sample for spectroscopic follow-up, allowing studies of galaxy evolution and environmental effects in nearby cluster and supercluster environments. |
| title | Targeting cluster galaxies for the 4MOST CHANCES Low-z sub-survey with photometric redshifts |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2510.19958 |