Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12666/540
Title: | A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4 |
Authors: | 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. |
Keywords: | Galaxies and clusters;Interstellar medium |
Issue Date: | 11-Jan-2021 |
Publisher: | Nature Research Journals |
DOI: | 10.1038/s41550-020-01268-x |
Citation: | Nature Astronomy 5: 319-330(2021) |
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. |
Description: | The ALMA data analysed in this study are publicly available from the ALMA archive (http://almascience.nrao.edu/aq/, Program IDs: 2015.1.00260.S, 2016.1.00171.S and 2019.1.01702.S). The DEIMOS spectrum of the source is also publicly available and can be retrieved through the COSMOS archive (http://cosmos.astro.caltech.edu/). |
URI: | http://hdl.handle.net/20.500.12666/540 |
E-ISSN: | 2397-3366 |
Appears in Collections: | (CAB) Artículos |
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acceso-restringido.pdf | 221,73 kB | Adobe PDF | View/Open |
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