Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sf2a.conf..119g&link_type=abstract
SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: G. Alecian, K. Belkacem,
Astronomy and Astrophysics
Astrophysics
Ism, Dust, Submillimeter, Herschel, Laboca, Sed Model
Scientific paper
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.
Albrecht Marcus
Aniano G.
Bertoldi Frank
Dale Daniel
Draine Bruce
No associations
LandOfFree
Mapping the dust properties of nearby galaxies with Herschel and LABOCA does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mapping the dust properties of nearby galaxies with Herschel and LABOCA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mapping the dust properties of nearby galaxies with Herschel and LABOCA will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1439337