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Final Published Version
Author
Decarli, R.
Walter, Fabian

Venemans, B. P.

Bañados, Eduardo

Bertoldi, Frank

Carilli, Chris L.

Fan, Xiaohui

Farina, E. P.

Mazzucchelli, C.

Riechers, Dominik A.

Rix, Hans-Walter

Strauss, Michael A.

Wang, Ran
Yang, Yujin

Affiliation
Univ Arizona, Steward ObservIssue Date
2018-02-15
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IOP PUBLISHING LTDCitation
An ALMA [C ii] Survey of 27 Quasars at z > 5.94 2018, 854 (2):97 The Astrophysical JournalJournal
The Astrophysical JournalRights
© 2018. The American Astronomical Society. All rights reserved.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We present a survey of the [C II] 158 mu m line and underlying far-infrared (FIR) dust continuum emission in a sample of 27 greater than or similar to 6 quasars using the Atacama Large Millimeter Array (ALMA) at similar to 1 '' resolution. The [C II] line was significantly detected (at > 5-sigma) in 23 sources (85%). We find typical line luminosities of L-[C (II]) = 10(9-10) L-circle dot, and an average line width of similar to 385 km s(-1). The [C II]-to-far-infrared luminosity ratios ([C II]/FIR) in our sources span one order of magnitude, highlighting a variety of conditions in the star-forming medium. Four quasar host galaxies are clearly resolved in their [C II] emission on a few kpc scales. Basic estimates of the dynamical masses of the host galaxies give masses between 2 x 10(10) and 2 x 10(11) M-circle dot, i.e., more than an order of magnitude below what is expected from local scaling relations, given the available limits on the masses of the central black holes (> 3 x 10(8) M-circle dot, assuming Eddington-limited accretion). In stacked ALMA [C II] spectra of individual sources in our sample, we find no evidence of a deviation from a single Gaussian profile. The quasar luminosity does not strongly correlate with either the [C II] luminosity or equivalent width. This survey (with typical on-source integration times of 8 minutes) showcases the unparalleled sensitivity of ALMA at millimeter wavelengths, and offers a unique reference sample for the study of the first massive galaxies in the universe.ISSN
1538-4357Version
Final published versionSponsors
DFG [1573]; ERC grant Cosmic_Dawn; National Science Foundation [AST-1614213]Additional Links
http://stacks.iop.org/0004-637X/854/i=2/a=97?key=crossref.f5c0aa93f06d2e5277de3d42af478644ae974a485f413a2113503eed53cd6c53
10.3847/1538-4357/aaa5aa