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{Lamperti:2019:mnras/stz2311,
author = {Lamperti, I and Saintonge, A and De, Looze I and Accurso, G and Clark, CJR and Smith, MWL and Wilson, CD and Brinks, E and Brown, T and Bureau, M and Clements, DL and Eales, S and Glass, DHW and Hwang, HS and Lee, JC and Lin, L and Michalowski, MJ and Sargent, M and Williams, TG and Xiao, T and Yang, C},
doi = {mnras/stz2311},
journal = {Monthly Notices of the Royal Astronomical Society},
pages = {4389--4417},
title = {JINGLE - V. Dust properties of nearby galaxies derived from hierarchical Bayesian SED fitting},
url = {http://dx.doi.org/10.1093/mnras/stz2311},
volume = {489},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We study the dust properties of 192 nearby galaxies from the JINGLE survey using photometric data in the 22–850 μm range. We derive the total dust mass, temperature T, and emissivity index β of the galaxies through the fitting of their spectral energy distribution (SED) using a single modified blackbody model (SMBB). We apply a hierarchical Bayesian approach that reduces the known degeneracy between T and β. Applying the hierarchical approach, the strength of the T–β anticorrelation is reduced from a Pearson correlation coefficient R = −0.79 to R = −0.52. For the JINGLE galaxies we measure dust temperatures in the range 17−30 K and dust emissivity indices β in the range 0.6−2.2. We compare the SMBB model with the broken emissivity law modified blackbody (BMBB) and the two modified blackbody (TMBB) models. The results derived with the SMBB and TMBB are in good agreement, thus applying the SMBB, which comes with fewer free parameters, does not penalize the measurement of the cold dust properties in the JINGLE sample. We investigate the relation between T and β and other global galaxy properties in the JINGLE and Herschel Reference Survey (HRS) sample. We find that β correlates with the stellar mass surface density (R = 0.62) and anticorrelates with the H I mass fraction (MH I/M, R = −0.65), whereas the dust temperature correlates strongly with the star formation rate normalized by the dust mass (R = 0.73). These relations can be used to estimate T and β in galaxies with insufficient photometric data available to measure them directly through SED fitting.
AU  - Lamperti,I
AU  - Saintonge,A
AU  - De,Looze I
AU  - Accurso,G
AU  - Clark,CJR
AU  - Smith,MWL
AU  - Wilson,CD
AU  - Brinks,E
AU  - Brown,T
AU  - Bureau,M
AU  - Clements,DL
AU  - Eales,S
AU  - Glass,DHW
AU  - Hwang,HS
AU  - Lee,JC
AU  - Lin,L
AU  - Michalowski,MJ
AU  - Sargent,M
AU  - Williams,TG
AU  - Xiao,T
AU  - Yang,C
DO  - mnras/stz2311
EP  - 4417
PY  - 2019///
SN  - 0035-8711
SP  - 4389
TI  - JINGLE - V. Dust properties of nearby galaxies derived from hierarchical Bayesian SED fitting
T2  - Monthly Notices of the Royal Astronomical Society
UR  - http://dx.doi.org/10.1093/mnras/stz2311
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000489288600109&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://academic.oup.com/mnras/article/489/3/4389/5552673
UR  - http://hdl.handle.net/10044/1/80415
VL  - 489
ER  -
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