The Massive Ancient Galaxies at z > 3 NEar-infrared (MAGAZ3NE) Survey: Confirmation of Extremely Rapid Star Formation and Quenching Timescales for Massive Galaxies in the Early Universe

We present near-infrared spectroscopic confirmations of a sample of 16 photometrically selected galaxies with stellar masses  >11 at redshift z  > 3 from the XMM-VIDEO and COSMOS-UltraVISTA fields using Keck/MOSFIRE as part of the Massive Ancient Galaxies At z > 3 NEar-infrared (MAGAZ3NE) s...

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Bibliographic Details
Published in:The Astrophysical journal 2020-11, Vol.903 (1), p.47
Main Authors: Forrest, Ben, Marsan, Z. Cemile, Annunziatella, Marianna, Wilson, Gillian, Muzzin, Adam, Marchesini, Danilo, Cooper, M. C., Chan, Jeffrey C. C., McConachie, Ian, Gomez, Percy, Kado-Fong, Erin, Barbera, Francesco La, Lange-Vagle, Daniel, Nantais, Julie, Nonino, Mario, Saracco, Paolo, Stefanon, Mauro, van der Burg, Remco F. J.
Format: Article
Language:English
Subjects:
Active galactic nuclei
Astrophysics
Emission lines
Galactic evolution
Galaxies
Infrared photometry
Infrared spectra
Near infrared radiation
Polls & surveys
Red shift
Space telescopes
Star & galaxy formation
Star formation
Stars & galaxies
Universe
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Summary:We present near-infrared spectroscopic confirmations of a sample of 16 photometrically selected galaxies with stellar masses  >11 at redshift z  > 3 from the XMM-VIDEO and COSMOS-UltraVISTA fields using Keck/MOSFIRE as part of the Massive Ancient Galaxies At z > 3 NEar-infrared (MAGAZ3NE) survey. Eight of the ultramassive galaxies (UMGs) have specific star formation rates (sSFR)  1 Gyr −1 . Model star formation histories of these galaxies describe systems that formed the majority of their stars in vigorous bursts of several hundred megayear duration around during which hundreds to thousands of solar masses were formed per year. These formation ages of
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/abb819