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|Title:||DustPedia: Multiwavelength photometry and imagery of 875 nearby galaxies in 42 ultraviolet-microwave bands||Authors:||Clark, C. J. R.
Smith, M. W. L.
CASSARA, LETIZIA PASQUA
Davies, J. I.
De Looze, I.
De Vis, P.
Jones, A. P.
Mosenkov, A. V.
|Issue Date:||2018||Journal:||ASTRONOMY & ASTROPHYSICS||Number:||609||First Page:||A37||Abstract:||Aims: The DustPedia project is capitalising on the legacy of the Herschel Space Observatory, using cutting-edge modelling techniques to study dust in the 875 DustPedia galaxies - representing the vast majority of extended galaxies within 3000 km s<SUP>-1</SUP> that were observed by Herschel. This work requires a database of multiwavelength imagery and photometry that greatly exceeds the scope (in terms of wavelength coverage and number of galaxies) of any previous local-Universe survey. Methods: We constructed a database containing our own custom Herschel reductions, along with standardised archival observations from GALEX, SDSS, DSS, 2MASS, WISE, Spitzer, and Planck. Using these data, we performed consistent aperture-matched photometry, which we combined with external supplementary photometry from IRAS and Planck. <BR /> Results: We present our multiwavelength imagery and photometry across 42 UV-microwave bands for the 875 DustPedia galaxies. Our aperture-matched photometry, combined with the external supplementary photometry, represents a total of 21 857 photometric measurements. A typical DustPedia galaxy has multiwavelength photometry spanning 25 bands. We also present the Comprehensive & Adaptable Aperture Photometry Routine (CAAPR), the pipeline we developed to carry out our aperture-matched photometry. CAAPR is designed to produce consistent photometry for the enormous range of galaxy and observation types in our data. In particular, CAAPR is able to determine robust cross-compatible uncertainties, thanks to a novel method for reliably extrapolating the aperture noise for observations that cover a very limited amount of background. Our rich database of imagery and photometry is being made available to the community. <P />Photometry data tables are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://220.127.116.11">http://18.104.22.168</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/609/A37">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/609/A37||URI:||http://hdl.handle.net/20.500.12386/27767||URL:||https://www.aanda.org/articles/aa/full_html/2018/01/aa31419-17/aa31419-17.html||ISSN:||0004-6361||DOI:||10.1051/0004-6361/201731419||Bibcode ADS:||2018A&A...609A..37C||Fulltext:||open|
|Appears in Collections:||1.01 Articoli in rivista|
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checked on Oct 26, 2020
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