Imperial College London
Portrait Picture

Dr Clements

Faculty of Natural Sciences, Department of Physics

Reader in Astrophysics
 
 
 
//

Contact

 

+44 (0)20 7594 7693d.clements

 
 
//

Location

 

1011Blackett LaboratorySouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Lim:2020:1538-4357/ab8eaf,
author = {Lim, C-F and Chen, C-C and Smail, I and Wang, W-H and Tee, W-L and Lin, Y-T and Scott, D and Toba, Y and Chang, Y-Y and Ao, Y and Babul, A and Bunker, A and Chapman, SC and Clements, DL and Conselice, CJ and Gao, Y and Greve, TR and Ho, LC and Hong, SE and Hwang, HS and Koprowski, M and Michalowski, MJ and Shim, H and Shu, X and Simpson, JM},
doi = {1538-4357/ab8eaf},
journal = {The Astrophysical Journal: an international review of astronomy and astronomical physics},
pages = {1--18},
title = {SCUBA-2 ultra deep imaging EAO survey (STUDIES). IV. spatial clustering and halo masses of submillimeter galaxies},
url = {http://dx.doi.org/10.3847/1538-4357/ab8eaf},
volume = {895},
year = {2020}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We analyze an extremely deep 450 μm image (1σ = 0.56 mJy beam−1) of a sime300 arcmin2 area in the CANDELS/COSMOS field as part of the Sub-millimeter Common User Bolometric Array-2 Ultra Deep Imaging EAO Survey. We select a robust (signal-to-noise ratio ≥4) and flux-limited (≥4 mJy) sample of 164 submillimeter galaxies (SMGs) at 450 μm that have K-band counterparts in the COSMOS2015 catalog identified from radio or mid-infrared imaging. Utilizing this SMG sample and the 4705 K-band-selected non-SMGs that reside within the noise level ≤1 mJy beam−1 region of the 450 μm image as a training set, we develop a machine-learning classifier using K-band magnitude and color–color pairs based on the 13-band photometry available in this field. We apply the trained machine-learning classifier to the wider COSMOS field (1.6 deg2) using the same COSMOS2015 catalog and identify a sample of 6182 SMG candidates with similar colors. The number density, radio and/or mid-infrared detection rates, redshift and stellar-mass distributions, and the stacked 450 μm fluxes of these SMG candidates, from the S2COSMOS observations of the wide field, agree with the measurements made in the much smaller CANDELS field, supporting the effectiveness of the classifier. Using this SMG candidate sample, we measure the two-point autocorrelation functions from z = 3 down to z = 0.5. We find that the SMG candidates reside in halos with masses of sime(2.0 ± 0.5) × 1013 h −1 M  across this redshift range. We do not find evidence of downsizing that has been suggested by other recent observational studies.
AU  - Lim,C-F
AU  - Chen,C-C
AU  - Smail,I
AU  - Wang,W-H
AU  - Tee,W-L
AU  - Lin,Y-T
AU  - Scott,D
AU  - Toba,Y
AU  - Chang,Y-Y
AU  - Ao,Y
AU  - Babul,A
AU  - Bunker,A
AU  - Chapman,SC
AU  - Clements,DL
AU  - Conselice,CJ
AU  - Gao,Y
AU  - Greve,TR
AU  - Ho,LC
AU  - Hong,SE
AU  - Hwang,HS
AU  - Koprowski,M
AU  - Michalowski,MJ
AU  - Shim,H
AU  - Shu,X
AU  - Simpson,JM
DO  - 1538-4357/ab8eaf
EP  - 18
PY  - 2020///
SN  - 0004-637X
SP  - 1
TI  - SCUBA-2 ultra deep imaging EAO survey (STUDIES). IV. spatial clustering and halo masses of submillimeter galaxies
T2  - The Astrophysical Journal: an international review of astronomy and astronomical physics
UR  - http://dx.doi.org/10.3847/1538-4357/ab8eaf
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000539351400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://iopscience.iop.org/article/10.3847/1538-4357/ab8eaf
UR  - http://hdl.handle.net/10044/1/80413
VL  - 895
ER  -
Download