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Home Search Quick Search Advanced Fulltext Browse Collections Persons My eDoc Session History Login Name: Password: Documentation Help Support Wiki Direct access to document ID:	Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents ID: 607402.0, MPI für Astronomie / Publikationen_mpia Mapping the dust properties of nearby galaxies with Herschel and LABOCA Authors: Galametz, M.; Albrecht, M.; Kennicutt, R.; Bertoldi, F.; Walter, F.; Weiss, A.; Dale, D.; Draine, B.; Aniano, G.; Engelbracht, C.; Hinz, J.; Roussel, H.; Belkacem, K.; Samadi, R.; Valls-Gabaud, D. Publisher: French Society of Astronomy and Astrophysics Date of Publication (YYYY-MM-DD): 2011 Title of Proceedings: SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Start Page: 119 End Page: 123 Name of Conference/Meeting: SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Audience: Not Specified Abstract / Description: We combine Spitzer, Herschel and LABOCA observations from 24 to 870 micron for 11 galaxies of the KINGFISH Herschel Key programme dedicated to the observations of 61 nearby galaxies of various metallicities and levels of star formation activity. We perform a global two-temperature fitting of the Spectral Energy Distributions of the galaxies to study the cold dust properties and probe the variations in the emissivity index of grains inferred by the use of submm data. Using the resolution of Spitzer and Herschel observations, we also produce dust temperature maps of the galaxies and perform a local study of the variations of cold dust properties within the galaxies. We finally build extrapolated maps at 870 micron and compare them with our LABOCA observations. Some of our galaxies exhibit an excess at 870 micron compared to fluxes inferred from the modeling. This excess decreases (and even disappears in some cases) when a lower emissivity index is used, for instance β=1.5 in lieu of the standard value of 2 commonly used in current SED models. The cause for such excess still has to be investigated. Free Keywords: ISM; dust; submillimeter; Herschel; LABOCA; SED model Comment of the Author/Creator: Date: 2011, December 1, 2011 External Publication Status: published Document Type: Conference-Paper Communicated by: N. N. Affiliations: MPI für Astronomie Identifiers: URL:http://cdsads.u-strasbg.fr/abs/2011sf2a.conf..119G The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.