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@article{Venemans:2012:2/L25,
author = {Venemans, BP and McMahon, RG and Walter, F and Decarli, R and Cox, P and Neri, R and Hewett, P and Mortlock, DJ and Simpson, C and Warren, SJ},
doi = {2/L25},
journal = {Letters of the Astrophysical Journal},
title = {Detection of atomic carbon [C II] 158 mu m and dust emission from A z=7.1 quasar host galaxy},
url = {http://dx.doi.org/10.1088/2041-8205/751/2/L25},
volume = {751},
year = {2012}
}

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TY  - JOUR
AB  - Using the IRAM Plateau de Bure Interferometer, we report the detection of the 158 μm [C II] emission line and underlying dust continuum in the host galaxy of the quasar ULAS J112001.48+064124.3 (hereafter J1120+0641) at z = 7.0842 ± 0.0004. This is the highest redshift detection of the [C II] line to date, and allows us to put the first constraints on the physical properties of the host galaxy of J1120+0641. The [C II] line luminosity is 1.2 ± 0.2 × 109 L , which is a factor ~4 lower than observed in a luminous quasar at z = 6.42 (SDSS J1148+5251). The underlying far-infrared (FIR) continuum has a flux density of 0.61 ± 0.16 mJy, similar to the average flux density of z ~ 6 quasars that were not individually detected in the rest-frame FIR. Assuming that the FIR luminosity of L FIR = 5.8 × 1011-1.8 × 1012 L  is mainly powered by star formation, we derive a star formation rate in the range 160-440 M  yr–1 and a total dust mass in the host galaxy of 6.7 × 107-5.7 × 108 M  (both numbers have significant uncertainties given the unknown nature of dust at these redshifts). The [C II] line width of σ V = 100 ± 15 km s–1 is among the smallest observed when compared to the molecular line widths detected in z ~ 6 quasars. Both the [C II] and dust continuum emission are spatially unresolved at the current angular resolution of 2.0 × 1.7 arcsec2 (corresponding to 10 × 9 kpc2 at the redshift of J1120+0641).
AU  - Venemans,BP
AU  - McMahon,RG
AU  - Walter,F
AU  - Decarli,R
AU  - Cox,P
AU  - Neri,R
AU  - Hewett,P
AU  - Mortlock,DJ
AU  - Simpson,C
AU  - Warren,SJ
DO  - 2/L25
PY  - 2012///
SN  - 2041-8205
TI  - Detection of atomic carbon [C II] 158 mu m and dust emission from A z=7.1 quasar host galaxy
T2  - Letters of the Astrophysical Journal
UR  - http://dx.doi.org/10.1088/2041-8205/751/2/L25
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000304205000003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/73485
VL  - 751
ER  -

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