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[FeII] as a shock tracer in NGC 253

Published online by Cambridge University Press:  21 March 2013

Marissa J. F. Rosenberg ,
Paul P. van der Werf  and
Frank P. Israel
Marissa J. F. Rosenberg
Affiliation:
Leiden Observatory, Universiteit Leiden, NL-2300CA, Leiden, the Netherlands email: rosenberg@strw.leidenuniv.nl
Paul P. van der Werf
Affiliation:
Leiden Observatory, Universiteit Leiden, NL-2300CA, Leiden, the Netherlands email: rosenberg@strw.leidenuniv.nl
Frank P. Israel
Affiliation:
Leiden Observatory, Universiteit Leiden, NL-2300CA, Leiden, the Netherlands email: rosenberg@strw.leidenuniv.nl
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Abstract

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Supernovae play an integral role in the feedback of processed material back into the interstellar medium (ISM) of galaxies and are responsible for most of the chemical enrichment of the universe. The rate of supernovae can also reveal the star formation histories. In a sample of 11 nearby galaxies observed with SINFONI, a strong linear correlation between [FeII]1.26 luminosity and Starburst 99-derived supernova rate is found on a pixel-pixel basis. In the very nearby archetypal starburst galaxy NGC 253, the excitation of molecular gas is a subject of debate. Using the correlation between [FeII] and supernova rate, we can determine if supernovae can account for the excitation of the bright observed near-infrared H2 emission.

Keywords

supernovae: general — instrumentation: high angular resolution — galaxies: individual (NGC 253)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 295 - 298
Copyright
Copyright © International Astronomical Union 2013

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