Abstract
Collisional ring galaxies probably result from a head-on collision between a compact companion galaxy and a gas-rich disk system. We present a review of the discovery of warm dust in five collisional rings observed by ISO which range in total Far-IR luminosity from 1010 < LFIR < 1011 L⊙. The results show that in most cases, the mid-IR (MIR) flux is often a significant fraction of the total energy budget of star formation activity in these galaxies (at least 10% even in the least powerful cases). We argue that the MIR emission, when combined with optical and radio observations, allows us to build a more complete picture of activity in these collisional systems. Although not as extreme as ULIRGs, these collisional systems provide low-redshift examples of the early effects of galaxy collisions on the ISM and may be relevant to the collisional assembly of galaxy disk components at high redshift.
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© 2000 Springer-Verlag Berlin Heidelberg
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Appleton, P.N., Charmandaris, V., Horellou, C., Felix Mirabel, I., Laurent, O. (2000). Smoke in the “Smoke Rings”: ISO Observations of Dust in Collisional Ring Galaxies. In: Lemke, D., Stickel, M., Wilke, K. (eds) ISO Surveys of a Dusty Universe. Lecture Notes in Physics, vol 548. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45553-1_30
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DOI: https://doi.org/10.1007/3-540-45553-1_30
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