Examinando por Autor "Liu, D."

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A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4
(Nature Research Journals, 2021-01-11) Puglisi, A.; Daddi, E.; Brusa, M.; Bournaud, F.; Fensch, J.; Liu, D.; Delvecchio, I.; Calabrò, A.; Circosta, C.; Valentino, F.; Perna, M.; Jin, S.; Enia, A.; Mancini, C.; Rodighiero, G.; Science and Technology Facilities Council (STFC); European Regional Development Fund (ERDF); European Commission (EC); Comunidad de Madrid; Delvecchio, I. [0000-0001-8706-2252]; Enia, A. [0000-0002-0200-2857]; Daddi, E. [0000-0002-3331-9590]; Valentino, F. [0000-0001-6477-4011]; Mancini, C. [0000-0002-4297-0561]; Liu, D. [0000-0001-9773-7479]
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.