| Name: Rahul Verma |
| Affiliation: Indian Institute of Science |
| Conference ID: ASI2026_208 |
| Title: AGN feedback in Dwarf Galaxies |
| Abstract Type: Poster |
| Abstract Category: Galaxies and Cosmology |
| Author(s) and Co-Author(s) with Affiliation: Rahul Verma(Indian Institute of Science, Bangalore - 560012, India), C. S. Stalin(Indian Institute of Astrophysics, Bangalore - 560034, India) |
| Abstract: During the process of galaxy evolution, AGN (Active Galactic Nuclei) feedback plays a crucial role. This feedback process can affect the star formation characteristics of their host galaxies. The impact of AGN on their host galaxies has been extensively studied in massive galaxies hosting AGN. However, much less is currently known about the prevalence of AGN in dwarf galaxies and their potential role in driving galaxy evolution. In this work, we aim to characterise the impact of AGN on their host dwarf galaxies using spectral energy distribution fitting with CIGALE (Code Investigating GALaxy Emission), applied to UV to mid-infrared photometry of a sample of AGN-hosting dwarf galaxies. The same exercise was also carried out on a control sample of dwarf galaxies without AGN, having the same distribution of redshift and absolute brightness as their AGN counterparts. From a systematic and Homogeneous analysis carried out on a sample of dwarf galaxies with AGN and those without AGN, we found that the star formation activity in dwarf galaxies with AGN is lower than that of dwarf galaxies without AGN. This suggests that the presence of AGN in dwarfs has a negative feedback effect, resulting in quenching of star formation in them. We also studied the radio emission from dwarf galaxies hosting AGN. We found that AGN hosting dwarf galaxies, having observations in radio, have a higher star formation rate compared to the sources that are not detected in radio. Our study shows that the radio emission is primarily associated with star formation, rather than AGN activity. Details of the results will be presented. |
