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Title:
Radio Continuum, CO, and Thermal Infrared Emission in Nearby Star-Forming Galaxies
Authors:
Wong, T.; Hughes, A.; Ekers, R.; Paladino, R.; Murgia, M.; Blitz, L.; Helfer, T. T.; Moscadelli, L.; Gregorini, L.; Staveley-Smith, L.; Filipovic, M.; Fukui, Y.; Mizuno, N.
Affiliation:
AA(CSIRO ATNF; , School of Physics,UNSW), AB(Swinburne University of Technology), AC(CSIRO ATNF), AD(INAF-Cagliari), AE(INAF-Cagliari; , Istituto di Radioastronomia del CNR), AF(Radio Astronomy Laboratory, University of California), AG(Radio Astronomy Laboratory, University of California), AH(INAF-Cagliari), AI(Istituto di Radioastronomia del CNR), AJ(CSIRO ATNF), AK(University of Western Sydney), AL(Dept.of Astrophysics, Nagoya University), AM(Dept.of Astrophysics, Nagoya University)
Publication:
ISLAND UNIVERSES, Astrophysics and Space Science Proceedings. ISBN 978-1-4020-5572-0. Springer, 2007, p. 391
Publication Date:
00/2007
Origin:
SPRINGER
Bibliographic Code:
2007iuse.book..391W

Abstract

The correlation between far-infrared and radio emission in galaxies is remarkably strong considering the very different emission mechanisms which are thought to be responsible for the two. We have examined this correlation in the LMC on scales ranging from 40 pc to 4 kpc, finding that the FIR-radio correlation remains extremely tight down to <100 pc, whereas correlations of either FIR or radio with Hi or CO degrade considerably below 1kpc. However, in nearby spiral galaxies the mid-infrared (MIR) and radio emission begin to decorrelate even on scales of <2 kpc. The difference in behaviour from the LMC may be due to the larger fraction of synchrotron flux in more massive galaxies.
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