Spectral Energy Distributions of Companion Galaxies to z ∼ 6 Quasars

Mazzucchelli, C.; Decarli, R.; Farina, E. P.; Bañados, E.; Venemans, B. P.; Strauss, M. A.; Walter, F.; Neeleman, M.; Bertoldi, F.; Fan, X.; Riechers, D.; Rix, H. -W.; Wang, R.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Spectral Energy Distributions of Companion Galaxies to z ∼ 6 Quasars

MPS-Authors

Mazzucchelli, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Decarli, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Farina, E. P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bañados, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Venemans, B. P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Strauss, M. A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Walter, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Neeleman, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bertoldi, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fan, X.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Riechers, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rix, H. -W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wang, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2019ApJ...881..163M
(Any fulltext)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Mazzucchelli, C., Decarli, R., Farina, E. P., Bañados, E., Venemans, B. P., Strauss, M. A., et al. (2019). Spectral Energy Distributions of Companion Galaxies to z ∼ 6 Quasars. The Astrophysical Journal, 881.

Cite as: https://hdl.handle.net/21.11116/0000-0005-D06A-9

Abstract

Massive, 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 SFR_UV < few M _☉ yr⁻¹, and a stellar content of M _* < 10¹⁰ M _☉ yr⁻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 M _☉ yr⁻¹ and M _* ∼ 9 × 10⁹ M _☉. 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.