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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
PACS photometry of the herschel reference survey - far-infrared/ submillimetre colours as tracers of dust properties in nearby galaxies
Monthly Notices of the Royal Astronomical Society, Volume 440, No. 1, Year 2014
Notification
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Description
We present Herschel/PACS 100 and 160 μm integrated photometry for the 323 galaxies in the Herschel Reference Survey (HRS), a K-band, volume-limited sample of galaxies in the local Universe. Once combined with the Herschel/SPIRE observations already available, these data make the HRS the largest representative sample of nearby galaxies with homogeneous coverage across the 100-500 μm wavelength range. In this paper, we take advantage of this unique data set to investigate the properties and shape of the far-infrared/submillimetre spectral energy distribution in nearby galaxies. We show that, in the stellar mass range covered by the HRS (8 ≤ log (M*/M⊙) ≤ 12), the far-infrared/submillimetre colours are inconsistent with a single modified blackbody having the same dust emissivity index β for all galaxies. In particular, either β decreases or multiple temperature components are needed, when moving from metal-rich/gas-poor to metal-poor/gas-rich galaxies. We thus investigate how the dust temperature and mass obtained from a single modified blackbody depend on the assumptions made on β. We show that, while the correlations between dust temperature, galaxy structure and star formation rate are strongly model dependent, the dust mass scaling relations are much more reliable, and variations of β only change the strength of the observed trends. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Authors & Co-Authors
Cortese, Luca
Australia, Hawthorn
Swinburne University of Technology
Germany, Garching Bei Munchen
European Southern Observatory
Fritz, Jacopo
Belgium, Ghent
Universiteit Gent
Bianchi, Simone
Italy, Florence
Osservatorio Astrofisico Di Arcetri
Boselli, Alessandro
France, Marseille
Aix Marseille Université
Ciesla, Laure
Greece, Rethymnon
University of Crete
Bendo, George J.
United Kingdom, Manchester
The University of Manchester
Boquien, Médéric
France, Marseille
Aix Marseille Université
United Kingdom, Cambridge
Institute of Astronomy
Roussel, Hélène
France, Paris
Institut D’astrophysique de Paris
Baes, Maarten
Belgium, Ghent
Universiteit Gent
Buat, Véronique
France, Marseille
Aix Marseille Université
Clemens, Marcel S.
Italy, Padua
Osservatorio Astronomico Di Padova
Cooray, Asantha Roshan
United States, Irvine
University of California, Irvine
Cormier, Diane
Germany, Heidelberg
Universität Heidelberg
Davies, Jonathan I.
United Kingdom, Cardiff
Cardiff University
de Looze, Ilse
Belgium, Ghent
Universiteit Gent
Eales, Stephen A.
United Kingdom, Cardiff
Cardiff University
Fuller, Crispian
United Kingdom, Cardiff
Cardiff University
Hunt, L. K.
Italy, Florence
Osservatorio Astrofisico Di Arcetri
Madden, Suzanne C.
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Muñoz-Mateos, Juan Carlos
Chile, Santiago
European Southern Observatory Santiago
Pappalardo, Cirino
Italy, Florence
Osservatorio Astrofisico Di Arcetri
Pierini, Daniele
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Ŕemy-Ruyer, Auŕelie
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Sauvage, Marc
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Di Serego-Alighieri, Sperello
Italy, Florence
Osservatorio Astrofisico Di Arcetri
Smith, Matthew W.L.
United Kingdom, Cardiff
Cardiff University
Spinoglio, L.
Italy, Rome
Istituto Di Fisica Dello Spazio Interplanetario, Rome
Vaccari, Mattia
South Africa, Bellville
University of the Western Cape
Vlahakis, Catherine
Chile, Santiago
European Southern Observatory Santiago
Statistics
Citations: 83
Authors: 29
Affiliations: 18
Identifiers
Doi:
10.1093/mnras/stu175
ISSN:
00358711
e-ISSN:
13652966
Research Areas
Health System And Policy
Study Design
Cross Sectional Study
Study Approach
Quantitative