Program: GN-2023B-Q-215
Title: | Tracing impacts of jet-driven feedback on host ISM in infant radio galaxies |
PI: | Chetna Duggal |
Co-I(s): | Christopher O'Dea, Stefi Baum, Alvaro Labiano, Rafaella Morganti, Clive Tadhunter, Diana Worrall, Daniel Dicken |
Abstract
In the early stages of radio galaxy evolution, where the nuclear jets reside entirely within the host galaxy extent, the interaction of an expanding radio source with the surrounding galaxy ISM is likely to be the most pronounced. While the galactic-scale radio source can cause nearby clouds to collapse and trigger starbursts, shock-heating due to the jets can also cause extended gas clouds to heat up and accelerate, extinguishing star formation. New HST observations have revealed spatial alignment of UV-emitting regions with the radio-jet axis in a sample of Compact Steep Spectrum (CSS) sources which are typical examples of young radio galaxies. We propose GMOS/IFU observations of two CSS radio galaxies to test our hypothesis of jet- induced star formation by estimating the nebular continuum contribution to the observed UV, as well as to search for signatures of shock-driven outflows in the extended emission- line regions in compact radio galaxies. Our aim is to probe whether the observed co-spatiality of UV continuum and emission-line gas with radio morphology is a direct consequence of radio-mode AGN feedback to the host galaxy.