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The SEDs of interacting galaxies

Published online by Cambridge University Press:  17 August 2012

Lauranne Lanz ,
Nicola Brassington ,
Andreas Zezas ,
Howard A. Smith ,
Matthew L. N. Ashby ,
Elisabete da Cunha ,
Christopher Klein ,
Patrik Jonsson ,
Christopher C. Hayward  and
Lars Hernquist
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Lauranne Lanz
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected]
Nicola Brassington
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected] School of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK Physics Department, University of Crete, P.O. Box 2208, 710 03 Heraklion, Crete, Greece
Andreas Zezas
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected] Physics Department, University of Crete, P.O. Box 2208, 710 03 Heraklion, Crete, Greece
Howard A. Smith
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected]
Matthew L. N. Ashby
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected]
Elisabete da Cunha
Affiliation:
Max Planck Institute for Astronomy (MPIA), Königstuhl 17, 69117, Heidelberg, Germany
Christopher Klein
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA
Patrik Jonsson
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected]
Christopher C. Hayward
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected]
Lars Hernquist
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected]
Giovanni Fazio
Affiliation:
Harvard Smithsonian Center for Astrophysics 60 Garden Street, MS-10, Cambridge, MA 02138, USA email: [email protected]
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Abstract

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The evolution of galaxies is greatly influenced by their interactions. As part of a program to study interacting galaxies, we have measured and modeled the spectral energy distributions (SEDs) from the ultraviolet (UV) to the far-infrared (FIR). We describe the constraints imposed on star formation histories by these SEDs, and the variations therein seen across the interaction sequence, and we compare the results of different star formation rate prescriptions applied to the data. The sample itself is based on the Spitzer Interacting Galaxy Survey (SIGS) of 111 galaxies in 50 systems, a project designed to probe a range of galaxy interaction parameters in the infrared. Our SEDs combine the Spitzer results with multiwavelength data from other missions, in particular GALEX and Herschel. The subset presented here is the sample for which FIR Herschel observations are currently publicly available.

Keywords

galaxies:interactionsgalaxies:ISMgalaxies:photometryinfrared:galaxiesultraviolet:galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S284: The Spectral Energy Distribution of Galaxies , September 2011 , pp. 198 - 201
Copyright
Copyright © International Astronomical Union 2012

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