Jet-triggered star formation in young radio galaxies
Abstract
Emission in the ultraviolet continuum is a salient signature of the hot, massive and consequently short-lived, stellar population that traces recent or ongoing star formation. With the aim of mapping star forming regions and morphologically separating the generic star formation from that associated with the galaxy-scale jet activity, we obtained high-resolution HST/UV imaging for a sample of nine compact radio sources. Out of these, seven are known Compact Steep Spectrum (CSS) galaxies that host young, kpc-scale radio sources and hence are the best candidates for studying radio-mode feedback on galaxy scales, while the other two form a control sample of larger sources. Extended UV emission regions are observed in six of the seven CSS sources showing close spatial alignment with the radio-jet orientation. If other mechanisms possibly contributing to the observed UV emission are ruled out, this could be evidence in support of jet-triggered star formation in the CSS phase of radio galaxy evolution.
Keywords
Cite
@article{arxiv.2111.03818,
title = {Jet-triggered star formation in young radio galaxies},
author = {Chetna Duggal and Christopher O'Dea and Stefi Baum and Alvaro Labiano and Raffaella Morganti and Clive Tadhunter and Diana Worrall and Grant Tremblay and Daniel Dicken and Alessandro Capetti},
journal= {arXiv preprint arXiv:2111.03818},
year = {2021}
}
Comments
4 pages, 2 figures, Proceedings of the 6th Workshop on GHz-Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) sources