A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4
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A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4. / Puglisi, Annagrazia; Daddi, Emanuele; Brusa, Marcella; Bournaud, Frederic; Fensch, Jeremy; Liu, Daizhong; Delvecchio, Ivan; Calabro, Antonello; Circosta, Chiara; Valentino, Francesco; Perna, Michele; Jin, Shuowen; Enia, Andrea; Mancini, Chiara; Rodighiero, Giulia.
In: Nature Astronomy, Vol. 5, 11.01.2021, p. 319-330.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4
AU - Puglisi, Annagrazia
AU - Daddi, Emanuele
AU - Brusa, Marcella
AU - Bournaud, Frederic
AU - Fensch, Jeremy
AU - Liu, Daizhong
AU - Delvecchio, Ivan
AU - Calabro, Antonello
AU - Circosta, Chiara
AU - Valentino, Francesco
AU - Perna, Michele
AU - Jin, Shuowen
AU - Enia, Andrea
AU - Mancini, Chiara
AU - Rodighiero, Giulia
PY - 2021/1/11
Y1 - 2021/1/11
N2 - 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 greater than or similar to 10,000 M-circle dot 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.
AB - 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 greater than or similar to 10,000 M-circle dot 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.
KW - ACTIVE GALACTIC NUCLEI
KW - TIDAL DWARF GALAXIES
KW - STAR-FORMATION
KW - MOLECULAR GAS
KW - BLACK-HOLES
KW - DRIVEN OUTFLOWS
KW - MAIN-SEQUENCE
KW - COLD STREAMS
KW - AGN
KW - FEEDBACK
U2 - 10.1038/s41550-020-01268-x
DO - 10.1038/s41550-020-01268-x
M3 - Journal article
VL - 5
SP - 319
EP - 330
JO - Nature Astronomy
JF - Nature Astronomy
SN - 2397-3366
ER -
ID: 257746993