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Article Dans Une Revue Nature Astronomy Année : 2021

A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4

Annagrazia Puglisi
  • Fonction : Auteur
Emanuele Daddi
  • Fonction : Auteur
Marcella Brusa
  • Fonction : Auteur
Frederic Bournaud
  • Fonction : Auteur
Daizhong Liu
  • Fonction : Auteur
Ivan Delvecchio
  • Fonction : Auteur
Antonello Calabrò
  • Fonction : Auteur
Chiara Circosta
  • Fonction : Auteur
Francesco Valentino
  • Fonction : Auteur
Michele Perna
  • Fonction : Auteur
Shuowen Jin
  • Fonction : Auteur
Andrea Enia
  • Fonction : Auteur
Chiara Mancini
  • Fonction : Auteur
Giulia Rodighiero
  • Fonction : Auteur

Résumé

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.

Dates et versions

insu-03711508 , version 1 (01-07-2022)

Identifiants

Citer

Annagrazia Puglisi, Emanuele Daddi, Marcella Brusa, Frederic Bournaud, Jeremy Fensch, et al.. A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4. Nature Astronomy, 2021, 5, pp.319-330. ⟨10.1038/s41550-020-01268-x⟩. ⟨insu-03711508⟩
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