# Galaxy evolution studies in clusters: the case of Cl0024+1652 cluster galaxies at z$\sim$0.4

**Authors:** Zeleke Beyoro-Amado,  {E-mail,  :, zbamado@gmail. com}, Mirjana Pović, Miguel Sánchez-Portal, Solomon Belay Tessema, Tilahun Getachew-Woreta, the GLACE team  
**arXiv:** [2004.01892](https://arxiv.org/abs/2004.01892)  
**Date:** 2020-04-04  
**Summary page:** https://www.summarizepaper.com/en/paper/2004.01892v1/

## Key points

- Studying the transformation of cluster galaxies is crucial for understanding the evolution of the universe
- The authors focus on investigating various properties of galaxies in clusters up to a redshift of approximately 1.0
- Three clusters are analyzed: ZwCl0024+1652 (redshift 0.4), RXJ1257+4738 (redshift 0.9), and Virgo (redshift 0.0038)
- Data from the GLACE survey obtained with the GTC 10.4 m telescope is used for ZwCl0024+1652 and RXJ1257+4738, while publicly available data is used for Virgo
- Morphological classification reveals that ET galaxies dominate over LT galaxies throughout all three clusters within a clustercentric distance of 1Mpc, with ET proportion decreasing and LT proportion increasing with redshift
- Emission line analysis identifies composite, AGN, and star-forming categories among emission line galaxies in ZwCl0024+1652
- The study contributes to understanding the evolution of the universe over cosmic time by studying transformation and properties of cluster galaxies in these three clusters
- Previous work by Kodama & Bower (2001) and Oh et al. has provided valuable insights into galaxy evolution in clusters
- Analysis includes a clustercentric distance of approximately 5 Mpc for broader context

## Summary

Studying the transformation of cluster galaxies is crucial for gaining a clear understanding of the evolution of the universe. In this study, the authors focus on investigating various properties, including morphology, star formation, AGN contribution, and metallicity, of galaxies in clusters up to a redshift of approximately 1.0. Specifically, they analyze three different clusters: ZwCl0024+1652 at a redshift of around 0.4, RXJ1257+4738 at a redshift of about 0.9, and Virgo at a redshift of approximately 0.0038. To conduct their analysis, the authors utilize tunable filters data from the GLACE survey obtained with the GTC 10.4 m telescope for ZwCl0024+1652 and RXJ1257+4738 clusters. They also incorporate other publicly available data for these two clusters and solely rely on public data for the Virgo cluster. The morphological classification of 180 galaxies in ZwCl0024+1652 is performed using galSVM, resulting in 54% being classified as early-type (ET) galaxies and 46% as late-type (LT) galaxies. Comparing these proportions between the three clusters within a clustercentric distance of 1Mpc reveals that ET galaxies dominate over LT galaxies throughout with ET proportion decreasing with redshift while LT proportion increasing. The data reduction process for the ZwCl0024+1652 cluster leads to identification of 46 [OIII] and 73 H$\beta$ emission lines which are then used to classify 22 emission line galaxies (ELGs) into composite (14), AGN (1), and star-forming (SF) (7) categories using BPT-NII diagnostic diagram. These results are then combined with publicly available data for further analysis of property variations in relation to redshift within range z<1.0 . By studying transformation and properties of cluster galaxies in these three clusters this research contributes to better understanding evolution of universe over cosmic time . This study builds upon previous work by Kodama & Bower (2001) and Oh et al., which have provided valuable insights into galaxy evolution in clusters . Additionally , it is worth noting that authors' analysis includes clustercentric distance approximately 5 Mpc providing broader context for their findings .