Galaxy evolution studies in clusters: the case of Cl0024 + 1652 cluster galaxies at z ∼ 0.4

• Published in: Proceedings of the International Astronomical Union Vol. 15; no. S356; pp. 163 - 168
• Main Authors: Beyoro-Amado, Zeleke, Pović, Mirjana, Sánchez-Portal, Miguel, Belay Tessema, Solomon, Getachew-Woreta, Tilahun
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 01.10.2019
• Subjects: Contributed Papers; late type; ELGs; ZwCl0024 + 1652; early type; Tunable Filter data; AGN; galaxy cluster
• ISSN: 1743-9213; 1743-9221
• DOI: 10.1017/S174392132000280X

Studying the transformation of cluster galaxies contributes a lot to have a clear picture of evolution of the universe. Towards that we are studying different properties (morphology, star formation, AGN contribution and metallicity) of galaxies in clusters up to z ∼ 1.0 taking three different clusters: ZwCl0024 + 1652 at z ∼ 0.4, RXJ1257 + 4738 at z ∼ 0.9 and Virgo at z ∼ 0.0038. For ZwCl0024 + 1652 and RXJ1257 + 4738 clusters we used tunable filters data from GLACE survey taken with GTC 10.4 m telescope and other public data, while for Virgo we used public data. We did the morphological classification of 180 galaxies in ZwCl0024 + 1652 using galSVM, where 54 % and 46 % of galaxies were classified as early-type (ET) and late-type (LT) respectively. We did a comparison between the three clusters within the clustercentric distance of 1 Mpc and found that ET proportion (decreasing with redshift) dominates over the LT (increasing with redshift) throughout. We finalized the data reduction for ZwCl0024 + 1652 cluster and identified 46 [OIII] and 73 Hβ emission lines. For this cluster we have classified 22 emission line galaxies (ELGs) using BPT-NII diagnostic diagram resulting with 14 composite, 1 AGN and 7 star forming (SF) galaxies. We are using these results, together with the public data, for further analysis of the variations of properties in relation to redshift within z < 1.0.