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Stellar and dust SED modelling of the Whirlpool interacting galaxy system

Published online by Cambridge University Press:  17 August 2012

Erin Mentuch  and
Christine Wilson
Erin Mentuch
Affiliation:
Dept. of Physics & Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1, Canada email: mentuch@physics.mcmaster.ca
Christine Wilson
Affiliation:
Dept. of Physics & Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1, Canada email: mentuch@physics.mcmaster.ca
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Abstract

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Some 300-500 Myr ago, the Whirlpool galaxy (NGC 5194/M51a) and its nearby post-starburst galaxy neighbour, NGC 5195/M51b closely interacted, resulting in significant changes to their star formation activity. Both galaxies display colors indicative of enhanced star formation during closest passage, but since then, star formation has ceased in NGC 5195 yet remained ongoing in the spiral NGC 5194. With a wealth of multi-wavelength (0.2–500 μm for this study) observations available, this nearby (10 Mpc) system, whose star formation history is well constrained through optical colors of individual stars and its dynamical history, provides the optimal laboratory to test the relation between dust emission and stellar emission within the fundamental framework of today's stellar population synthesis and dust emission models.

Keywords

galaxies: individual (NGC 5194/M51a, NGC 5195/M51b)galaxies: generalgalaxies: fundamental parametersgalaxies: stellar contentinfrared: galaxiestechniques: photometric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S284: The Spectral Energy Distribution of Galaxies , September 2011 , pp. 107 - 111
Copyright
Copyright © International Astronomical Union 2012

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