Abstract
We compute UV to radio continuum spectral energy distributions of 51 nearby galaxies recently observed with SPIRE onboard Herschel and present infrared colours (in the 25-500 μm spectral range). SPIRE data of normal galaxies are well reproduced with a modified black body (β=2) of temperature T≅q 20 K. In ellipticals hosting a radio galaxy, the far-infrared (FIR) emission is dominated by the synchrotron nuclear emission. The colour temperature of the cold dust is higher in quiescent E-S0a than in star-forming systems probably because of the different nature of their dust heating sources (evolved stellar populations, X-ray, fast electrons) and dust grain properties.
Original language | English |
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Title of host publication | SF2A-2010: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics |
Editors | S Boissier, M Heydari-Malayeri, R Samadi, D Valls-Gabaud |
Publisher | Societe Francaise d'Astronomie et d'Astrophysique |
Pages | 31-35 |
Publication status | Published - 1 Dec 2010 |
Event | Annual Meeting of the French Society of Astronomy & Astrophysics - Marseille, France Duration: 21 Jun 2010 → 24 Jun 2010 |
Conference
Conference | Annual Meeting of the French Society of Astronomy & Astrophysics |
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Country/Territory | France |
City | Marseille |
Period | 21/06/10 → 24/06/10 |