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.

Wong T., Hughes A., Ekers R., Paladino R., Murgia M., Blitz L., et al. (2007). Radio Continuum, CO, and Thermal Infrared Emission in Nearby Star-Forming Galaxies. s.l : Springer.

Radio Continuum, CO, and Thermal Infrared Emission in Nearby Star-Forming Galaxies

PALADINO, ROSITA;GREGORINI, LORETTA;
2007

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.
2007
ISLAND UNIVERSES STRUCTURE AND EVOLUTION OF DISK GALAXIES
391
394
Wong T., Hughes A., Ekers R., Paladino R., Murgia M., Blitz L., et al. (2007). Radio Continuum, CO, and Thermal Infrared Emission in Nearby Star-Forming Galaxies. s.l : Springer.
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.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/52270
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