Puglisi, A; Daddi, E; Brusa, M; Bournaud, F; Fensch, J; Liu, D; Delvecchio, I; ... Rodighiero, G; + view all Puglisi, A; Daddi, E; Brusa, M; Bournaud, F; Fensch, J; Liu, D; Delvecchio, I; Calabro, A; Circosta, C; Valentino, F; Perna, M; Jin, S; Enia, A; Mancini, C; Rodighiero, G; - view fewer (2021) A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4. Nature Astronomy , 5 (3) pp. 319-330. 10.1038/s41550-020-01268-x.

Preview

Text Circosta_33209.pdf - Accepted Version Download (1MB) | Preview

Abstract

Feedback-driven winds from star formation or active galactic nuclei might be a relevant channel for the abrupt quenching of star formation in massive galaxies. However, both observations and simulations support the idea that these processes are non-conflictingly co-evolving and self-regulating. Furthermore, evidence of disruptive events that are capable of fast quenching is rare, and constraints on their statistical prevalence are lacking. Here we present a massive starburst galaxy at redshift z = 1.4, which is ejecting 46 ± 13% of its molecular gas mass at a startling rate of ≳10,000 M⊙ yr−1. A broad component that is red-shifted from the galaxy emission is detected in four (low and high J) CO and [C I] transitions and in the ionized phase, which ensures a robust estimate of the expelled gas mass. The implied statistics suggest that similar events are potentially a major star-formation quenching channel. However, our observations provide compelling evidence that this is not a feedback-driven wind, but rather material from a merger that has been probably tidally ejected. This finding challenges some literature studies in which the role of feedback-driven winds might be overstated.

Download activity - last month

Export as CSVXMLJSON

Download activity - last 12 months

Export as CSVJSONXML

Downloads by country - last 12 months

Export as JSONXMLCSV

Archive Staff Only

View Item