Abstract Details
| Name: Kanishka Arora Affiliation: Indian Institute of Space Science and Technology Conference ID: ASI2025_380 Title : Understanding the large distance scale correlation between Metal Line Absorbers and Galaxies using Hydrodynamical simulations Authors and Co-Authors : Kanishka Arora 1, Dr. Srianand Raghunathan 2, Dr. Aanand Narayanan 1 Abstract Type : Poster Abstract Category : Galaxies and Cosmology Abstract : Understanding the distribution of gas around galaxies and its evolution over cosmic time is crucial to our knowledge of galaxy formation and evolution. Spectra of distant quasars offer a powerful tool to detect the intervening galaxies and intergalactic medium (IGM) via hydrogen and metal absorption lines. Recent studies have shown that strong, saturated metal absorption lines are effective tracers of enriched gas in and around galaxies, extending even to intra-group and cluster media. By combining deep imaging and spectroscopic surveys, we can now correlate metal absorption seen along the line of sight to quasars with foreground galaxies, allowing us to probe the extent of metal-enriched gas around these galaxies. We aim to reproduce these observational findings through semi-analytical and hydrodynamical simulations, focusing on the gas distribution around galaxies and the statistical properties of metal line absorbers. We will investigate how gas is distributed within galaxy halos and larger structures, and later analyze how this distribution evolves, leveraging simulations with known galaxy distributions and halo assignments. This approach will enable us to interpret the connection between galaxies and their surrounding enriched gas in unprecedented detail, helping to unveil the role of metal absorbers in tracing the cosmic web and galactic environments across different redshifts. |