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Characterisation of the submillimeter excess in dwarf galaxies: Presentation of the Herschel Dwarf Galaxies Survey

Published online by Cambridge University Press:  17 August 2012

Aurélie Rémy ,
Suzanne C. Madden ,
Frederic Galliano ,
Maud Galametz  and
Sacha Hony
Aurélie Rémy
Affiliation:
CEA- Service d'Astrophysique, CEA Saclay Orme des Merisiers Bat. 709, 91191 Gif-sur Yvette, France email: aurelie.remy@cea.fr
Suzanne C. Madden
Affiliation:
CEA- Service d'Astrophysique, CEA Saclay Orme des Merisiers Bat. 709, 91191 Gif-sur Yvette, France email: aurelie.remy@cea.fr
Frederic Galliano
Affiliation:
CEA- Service d'Astrophysique, CEA Saclay Orme des Merisiers Bat. 709, 91191 Gif-sur Yvette, France email: aurelie.remy@cea.fr
Maud Galametz
Affiliation:
CEA- Service d'Astrophysique, CEA Saclay Orme des Merisiers Bat. 709, 91191 Gif-sur Yvette, France email: aurelie.remy@cea.fr
Sacha Hony
Affiliation:
CEA- Service d'Astrophysique, CEA Saclay Orme des Merisiers Bat. 709, 91191 Gif-sur Yvette, France email: aurelie.remy@cea.fr
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Abstract

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The Herschel Space Observatory is revolutionizing our view of dust in galaxies with high sensitivity observations in the far infrared(FIR)/submillimeter (submm) regime from 70 to 500 μm. Herschel is confirming the submm excess that has been noted previously in low metallicity dwarfs. We present here the Dwarf Galaxies Survey sample through a Herschel colour-colour diagram. We will then focus on two galaxies, Haro11 and NGC4449 presenting different interesting behaviours in the FIR as revealed by Herschel.

Keywords

galaxies: dwarfgalaxies: ISMISM: dustinfrared: ISMsubmillimeter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S284: The Spectral Energy Distribution of Galaxies , September 2011 , pp. 149 - 151
Copyright
Copyright © International Astronomical Union 2012

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