An Extremely Massive Quiescent Galaxy at z = 3.493: Evidence of Insufficiently Rapid Quenching Mechanisms in Theoretical Models

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dc.contributor.authorForrest, Ben
dc.contributor.authorAnnunziatella, Marianna
dc.contributor.authorWilson, Gillian
dc.contributor.authorMarchesini, Danilo
dc.contributor.authorMuzzin, Adam
dc.contributor.authorCooper, M.C
dc.contributor.authorMarsan, Cemile
dc.contributor.authorMcConachie, Ian
dc.contributor.authorC. C. Chan, Jeffrey
dc.contributor.authorGomez, Percy
dc.contributor.authorKado-Fong, Erin
dc.contributor.authorLa Barbera, Francesco
dc.contributor.authorLabbé, Ivo
dc.contributor.authorDaniel, Langle -Vagle
dc.contributor.authorJulie, Nantais
dc.contributor.authorNonino, Mario
dc.contributor.authorPeña, Theodore
dc.contributor.authorSaracco, Paolo
dc.contributor.authorMauro, Stefanon
dc.contributor.authorRemco van der Burg, F.J
dc.date.accessioned2021-09-20T14:23:35Z
dc.date.available2021-09-20T14:23:35Z
dc.date.issued2020-02
dc.description.abstractWe present spectra of the most massive quiescent galaxy yet spectroscopically confirmed at z > 3, verified via the detection of Balmer absorption features in the H- A nd K-bands of Keck/MOSFIRE. The spectra confirm a galaxy with no significant ongoing star formation, consistent with the lack of rest-frame UV flux and overall photometric spectral energy distribution. With a stellar mass of 3.1-0.2-+0.1× 10-11\,M at z = 3.493, this galaxy is nearly three times more massive than the highest redshift spectroscopically confirmed absorption-line-identified galaxy known. The star formation history of this quiescent galaxy implies that it formed >1000 M o yr-1 for almost 0.5 Gyr beginning at z ∼ 7.2, strongly suggestive that it is the descendant of massive dusty star-forming galaxies at 5 < z < 7 recently observed with ALMA. While galaxies with similarly extreme stellar masses are reproduced in some simulations at early times, such a lack of ongoing star formation is not seen there. This suggests the need for a quenching process that either starts earlier or is more rapid than that currently prescribed, challenging our current understanding of how ultra-massive galaxies form and evolve in the early universe. © 2020. The American Astronomical Society. All rights reserved.es
dc.description.sponsorshipIndexación: Scopuses
dc.identifier.citationAstrophysical Journal Letters Open Access Volume 890, Issue 110 February 2020 Article number L1es
dc.identifier.issn20418205
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/20308
dc.language.isoenes
dc.publisherInstitute of Physics Publishinges
dc.titleAn Extremely Massive Quiescent Galaxy at z = 3.493: Evidence of Insufficiently Rapid Quenching Mechanisms in Theoretical Modelses
dc.typeArtículoes
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