Journal of Mathematical and Fundamental Sciences
Vol. 53 No. 3 (2021)

Properties of the Environment of Galaxies in Clusters of Galaxies CL 0024+1654 and RX J0152.7−1357

Premana Wardayanti Premadi (Astronomy Research Group and Bosscha Observatory, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia)
Dading Hadi Nugroho (Astronomy Research Group and Bosscha Observatory, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia)
Anton Timur Jaelani (Astronomy Research Group and Bosscha Observatory, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia)



Article Info

Publish Date
27 Dec 2021

Abstract

We report the results of combined analyses of X-ray and optical data of two galaxy clusters, CL 0024+1654 and RX J0152.7−1357 at redshift z = 0.395 and z = 0.830, respectively, offering a holistic physical description of the two clusters. Our X-ray analysis yielded temperature and density profiles of the gas in the intra-cluster medium (ICM). Using optical photometric and spectroscopic data, complemented with mass distribution from a gravitational lensing study, we investigated any possible correlation between the physical properties of the galaxy members, i.e. their color, morphology, and star formation rate (SFR), and their environments. We quantified the properties of the environment around each galaxy by galaxy number density, ICM temperature, and mass density. Although our results show that the two clusters exhibit a weaker correlation compared to relaxed clusters, it still confirms the significant effect of the ICM on the SFR in the galaxies. The close relation between the physical properties of galaxies and the condition of their immediate environment found in this work indicates the locality of galaxy evolution, even within a larger bound system such as a cluster. Various physical mechanisms are suggested to explain the relation between the properties of galaxies and their environment.

Copyrights © 2021






Journal Info

Abbrev

jmfs

Publisher

Subject

Astronomy Chemistry Earth & Planetary Sciences Mathematics Physics

Description

Journal of Mathematical and Fundamental Sciences welcomes full research articles in the area of Mathematics and Natural Sciences from the following subject areas: Astronomy, Chemistry, Earth Sciences (Geodesy, Geology, Geophysics, Oceanography, Meteorology), Life Sciences (Agriculture, Biochemistry, ...