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Spectral Energy Distributions of Companion Galaxies to z approx 6 Quasars

Author(s): Mazzucchelli, C; Decarli, R; Farina, EP; Ba nados, E; Venemans, BP; et al

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dc.contributor.authorMazzucchelli, C-
dc.contributor.authorDecarli, R-
dc.contributor.authorFarina, EP-
dc.contributor.authorBa nados, E-
dc.contributor.authorVenemans, BP-
dc.contributor.authorStrauss, Michael A-
dc.contributor.authorWalter, F-
dc.contributor.authorNeeleman, M-
dc.contributor.authorBertoldi, F-
dc.contributor.authorFan, X-
dc.contributor.authorRiechers, D-
dc.contributor.authorRix, H-W-
dc.contributor.authorWang, R-
dc.date.accessioned2022-01-25T15:04:55Z-
dc.date.available2022-01-25T15:04:55Z-
dc.date.issued2019-08-23en_US
dc.identifier.citationMazzucchelli, C, Decarli, R, Farina, EP, Ba nados, E, Venemans, BP, Strauss, MA, Walter, F, Neeleman, M, Bertoldi, F, Fan, X, Riechers, D, Rix, H-W, Wang, R. (2019). Spectral Energy Distributions of Companion Galaxies to z \ensuremath\sim 6 Quasars. \apj, 881 (163 - 163. doi:10.3847/1538-4357/ab2f75en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr18k74w5r-
dc.description.abstractMassive, quiescent galaxies are already observed at redshift z∼4, i.e., ∼1.5 Gyr after the big bang. Current models predict them to be formed via massive, gas-rich mergers at z>6. Recent ALMA observations of the cool gas and dust in z6 quasars have discovered [C II]- and far-infrared-bright galaxies adjacent to several quasars. In this work, we present sensitive imaging and spectroscopic follow-up observations, with HST/WFC3, Spitzer/IRAC, VLT/MUSE, Magellan/FIRE, and LBT/LUCI-MODS, of ALMA-detected, dust-rich companion galaxies of four quasars at z6, specifically acquired to probe their stellar content and unobscured star formation rate. Three companion galaxies do not show significant emission in the observed optical/IR wavelength range. The photometric limits suggest that these galaxies are highly dust-enshrouded, with unobscured star formation rates SFRUV <few Meyr−1, and a stellar content of M*<1010 Meyr−1. However, the companion to PJ167−13 shows bright rest-frame UV emission (F140W AB=25.48). Its spectral energy distribution resembles that of a star-forming galaxy with a total SFR∼50 Meyr−1 and M*∼9×109 Me. All the companion sources are consistent with residing on the galaxy main sequence at z∼6. Additional, deeper data from future facilities, such as the James Webb Space Telescope, are needed in order to characterize these gas-rich sources in the first gigayear of cosmic history.en_US
dc.language.isoen_USen_US
dc.relationhttps://ui.adsabs.harvard.edu/abs/2019ApJ...881..163M/abstracten_US
dc.relation.ispartofAstrophysical Journalen_US
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleSpectral Energy Distributions of Companion Galaxies to z approx 6 Quasarsen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.3847/1538-4357/ab2f75-
dc.date.eissued2019-08-20en_US
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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