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http://hdl.handle.net/20.500.12386/31782| Title: | An Ancient Massive Quiescent Galaxy Found in a Gas-rich z ∼ 3 Group | Authors: | Kalita, Boris S. Daddi, Emanuele D'Eugenio, Chiara Valentino, Francesco Rich, R. Michael Gómez-Guijarro, Carlos Coogan, Rosemary T. DELVECCHIO, IVAN Elbaz, David Neill, James D. Puglisi, Annagrazia STRAZZULLO, VERONICA |
Issue Date: | 2021 | Journal: | THE ASTROPHYSICAL JOURNAL LETTERS | Number: | 917 | Issue: | 2 | First Page: | L17 | Abstract: | Deep Atacama Large Millimeter/submillimeter Array and Hubble Space Telescope observations reveal the presence of a quenched massive galaxy within the z = 2.91 galaxy group RO-1001. With a mass-weighted stellar age of 1.6 ± 0.4 Gyr this galaxy is one of the oldest known at z ~ 3, implying that most of its 10<SUP>11</SUP> M<SUB>⊙</SUB> of stars were rapidly formed at z > 6-8. This is a unique example of the predominantly passive evolution of a galaxy over at least 3 < z < 6 following its high-redshift quenching and a smoking-gun event pointing to the early imprint of an age-environment relation. At the same time, being in a dense group environment with extensive cold gas reservoirs as betrayed by a giant Lyα halo, the existence of this galaxy demonstrates that gas accretion shutdown is not necessary for quenching and its maintenance.... | URI: | http://hdl.handle.net/20.500.12386/31782 | URL: | https://iopscience.iop.org/article/10.3847/2041-8213/ac16dc | ISSN: | 2041-8205 | DOI: | 10.3847/2041-8213/ac16dc | Fulltext: | open |
| Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2107.13241(1).pdf | postprint | 2.64 MB | Adobe PDF | View/Open |
| Kalita_2021_ApJL_917_L17.pdf | [Administrators only] | 943.22 kB | Adobe PDF |
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