Abstract Details

Name: Jyoti Yadav
Affiliation: Indian Institute Of Astrophysics
Conference ID: ASI2021_349
Title : UVIT-MUSE view of star formation, AGN activity and ionized outflows in Southern Interacting Galaxies
Authors and Co-Authors : Jyoti Yadav, Mousumi Das, Sudhanshu Barway
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : Interactions and mergers of gas rich galaxies can trigger star formation in their nuclear and disk regions, leading to starbursts and active galactic nuclear (AGN) activity. Galaxy mergers also lead to the formation of supermassive blackhole binaries that may start accreting gas and become single or dual AGN. The enhanced star formation will ultimately lead to bulge growth accompanied by starburst/AGN feedback activity. Apart from these effects, tidal dwarf galaxies may also form in the extended arms. These processes are all important for galaxy evolution and need to be understood in detail. Our study aims to understand these diverse processes using UV, optical and NIR observations of a sample of southern interacting galaxies for which we have obtained deep, near-IR observations using the SAAO. We use UVIT, NIR SAAO observations and MUSE archival data to find signatures of AGN activity and study its connection with the surrounding star formation. The UVIT images also show star formation in the tidal tails and is important for understanding tidal dwarf galaxy formation. The star formation is also visible in Halpha images obtained from MUSE. We present some preliminary results on the galaxy IC5110, whose BPT plot shows that it has a LINER like object but the MUSE data reveals that the emission is from a retired galaxy which has similar line ratios as those of a LINER, as well as a few other galaxies for which NIR, optical and UVIT data have been obtained. We also found signatures of outflows from central region and star formation along bar in NGC 7733.