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{Clements:2017:mnras/stx3227,
author = {Clements, DL and Pearson, C and Farrah, D and Greenslade, J and Bernard-Salas, J and Gonzalez-Alfonso, E and Afonso, J and Efstathiou, A and Rigopoulou, D and Lebouteiller, V and Hurley, PD and Spoon, H},
doi = {mnras/stx3227},
journal = {Monthly Notices of the Royal Astronomical Society},
pages = {2097--2121},
title = {HERUS: The Far-IR/Submm Spectral Energy Distributions of Local ULIRGs &  Photometric Atlas},
url = {http://dx.doi.org/10.1093/mnras/stx3227},
volume = {475},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We present the Herschel-SPIRE photometric atlas for a complete flux limitedsample of 43 local Ultraluminous Infrared Galaxies (ULIRGs), selected at60${\mu}$m by IRAS, as part of the HERschel ULIRG Survey (HERUS). Photometryobservations were obtained using the SPIRE instrument at 250, 350 and500${\mu}$m. We describe these observations, present the results, and combinethe new observations with data from IRAS to examine the far-IR spectral energydistributions (SEDs) of these sources. We fit the observed SEDs of HERUSobjects with a simple parameterised modified black body model where temperatureand emissivity $\beta$ are free parameters. We compare the fitted values tothose of non-ULIRG local galaxies, and find, in agreement with earlier results,that HERUS ULIRGs have warmer dust (median temperature T = 37.9+/-4.7 Kcompared to 21.3+/-3.4 K) but a similar $\beta$ distribution (median $\beta$ =1.7 compared to 1.8) to the Herschel reference sample (HRS, Cortese et al.,2014) galaxies. Dust masses are found to be in the range of 10^7.5 to 10^9 Msunsignificantly higher than that of Herschel Reference Sample (HRS) sources. Wecompare our results for local ULIRGs with higher redshift samples selected at250 and 850${\mu}$m. These latter sources generally have cooler dust and/orredder 100-to-250 ${\mu}$m colours than our 60${\mu}$m-selected ULIRGs. We showthat this difference may in part be the result of the sources being selected atdifferent wavelengths rather than being a simple indication of rapid evolutionin the properties of the population.
AU  - Clements,DL
AU  - Pearson,C
AU  - Farrah,D
AU  - Greenslade,J
AU  - Bernard-Salas,J
AU  - Gonzalez-Alfonso,E
AU  - Afonso,J
AU  - Efstathiou,A
AU  - Rigopoulou,D
AU  - Lebouteiller,V
AU  - Hurley,PD
AU  - Spoon,H
DO  - mnras/stx3227
EP  - 2121
PY  - 2017///
SN  - 0035-8711
SP  - 2097
TI  - HERUS: The Far-IR/Submm Spectral Energy Distributions of Local ULIRGs &  Photometric Atlas
T2  - Monthly Notices of the Royal Astronomical Society
UR  - http://dx.doi.org/10.1093/mnras/stx3227
UR  - http://arxiv.org/abs/1712.04843v1
UR  - http://hdl.handle.net/10044/1/57015
VL  - 475
ER  -
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