Imperial College London
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Dr Clements

Faculty of Natural Sciences, Department of Physics

Reader in Astrophysics
 
 
 
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Contact

 

+44 (0)20 7594 7693d.clements

 
 
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Location

 

1011Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zavala:2017:mnras/stw2630,
author = {Zavala, JA and Aretxaga, I and Geach, JE and Hughes, DH and Birkinshaw, M and Chapin, E and Chapman, S and Chen, C-C and Clements, DL and Dunlop, JS and Farrah, D and Ivison, RJ and Jenness, T and Michalowski, MJ and Robson, EI and Scott, D and Simpson, J and Spaans, M and van, der Werf P},
doi = {mnras/stw2630},
journal = {Monthly Notices of the Royal Astronomical Society},
pages = {3369--3384},
title = {The SCUBA-2 Cosmology Legacy Survey: the EGS deep field - I. Deep number counts and the redshift distribution of the recovered cosmic infrared background at 450 and 850 mu m},
url = {http://dx.doi.org/10.1093/mnras/stw2630},
volume = {464},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We present deep observations at 450 and 850 μm in the Extended Groth Strip field taken with the SCUBA-2 camera mounted on the James Clerk Maxwell Telescope as part of the deep SCUBA-2 Cosmology Legacy Survey (S2CLS), achieving a central instrumental depth of σ450 = 1.2 mJy beam−1 and σ850 = 0.2 mJy beam−1. We detect 57 sources at 450 μm and 90 at 850 μm with signal-to-noise ratio >3.5 over ∼70 arcmin2. From these detections, we derive the number counts at flux densities S450 > 4.0 mJy and S850 > 0.9 mJy, which represent the deepest number counts at these wavelengths derived using directly extracted sources from only blank-field observations with a single-dish telescope. Our measurements smoothly connect the gap between previous shallower blank-field single-dish observations and deep interferometric ALMA results. We estimate the contribution of our SCUBA-2 detected galaxies to the cosmic infrared background (CIB), as well as the contribution of 24 μm-selected galaxies through a stacking technique, which add a total of 0.26 ± 0.03 and 0.07 ± 0.01 MJy sr−1, at 450 and 850 μm, respectively. These surface brightnesses correspond to 60 ± 20 and 50 ± 20 per cent of the total CIB measurements, where the errors are dominated by those of the total CIB. Using the photometric redshifts of the 24 μm-selected sample and the redshift distributions of the submillimetre galaxies, we find that the redshift distribution of the recovered CIB is different at each wavelength, with a peak at z ∼ 1 for 450 μm and at z ∼ 2 for 850 μm, consistent with previous observations and theoretical models.
AU  - Zavala,JA
AU  - Aretxaga,I
AU  - Geach,JE
AU  - Hughes,DH
AU  - Birkinshaw,M
AU  - Chapin,E
AU  - Chapman,S
AU  - Chen,C-C
AU  - Clements,DL
AU  - Dunlop,JS
AU  - Farrah,D
AU  - Ivison,RJ
AU  - Jenness,T
AU  - Michalowski,MJ
AU  - Robson,EI
AU  - Scott,D
AU  - Simpson,J
AU  - Spaans,M
AU  - van,der Werf P
DO  - mnras/stw2630
EP  - 3384
PY  - 2017///
SN  - 0035-8711
SP  - 3369
TI  - The SCUBA-2 Cosmology Legacy Survey: the EGS deep field - I. Deep number counts and the redshift distribution of the recovered cosmic infrared background at 450 and 850 mu m
T2  - Monthly Notices of the Royal Astronomical Society
UR  - http://dx.doi.org/10.1093/mnras/stw2630
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000393647600066&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/61971
VL  - 464
ER  -
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