| Name: | Sana Shaikh |
| Affiliation: | Indian Institute of Technology Indore |
| Conference ID: | ASI2025_578 |
| Title: | Galaxies in Dense Cluster Environment |
| Authors: | Sana Shaikh 1, Priyanka Singh 1 |
| Authors Affiliation: | 1 Sana Shaikh, Priyanka Singh Department of Astronomy Astrophysics and Space Engineering (DAASE), Indian Institute of Technology Indore, Indore-453552, Madhya Pradesh, India. |
| Mode of Presentation: | Poster |
| Abstract Category: | Galaxies and Cosmology |
| Abstract: | We calculated the Stellar Mass Functions (SMF) of the field galaxies and cluster galaxies to see the impact of the cluster environment on the galaxy evolution. SMF is the number density of galaxies as a function of their stellar masses, it depends on factors such as the galaxy’s redshift and environment, whether it resides in a field or a cluster. To study the effect of the environment on the SMF of galaxies we used the galaxy data set containing around 31 million galaxies from KiDS+VIKING-450 (KV450) covering ∼341 deg sq. area distributed over five patches on the sky and the cluster data from the eFEDS survey with coverage of ∼140 deg sq. area. eFEDS overlaps with one of the five patches of KV450 called G9, from this overlap we defined cluster galaxy samples for a total of 105 clusters with redshifts ranging from (0.385, 0.8) as they have KV450 galaxy coverage within 5R500, we considered the galaxy as a part of a cluster if it's within the cluster-centric radial bin and cluster redshift range z±∆z. We calculated the SMF of KV450 using the 1/Vmax method (Schmidt 1968) at different redshift bins and observed the shape of the SMF. We estimated the cluster volumes by creating the HEALPix map of the surveys. Using the cluster volume calculated the SMF for cluster galaxies in two redshift bins considering the median redshift within different cluster-centric radial bins and compared to quantify the environmental effect on SMF of cluster galaxies as we move away from the cluster center, also calculated the SMF by dividing the clusters depending on their masses and luminosity to see the effect of cluster's total mass and luminosity on cluster galaxy SMF. |
