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The dust emission SED of X-ray emitting regions in Stephan's Quintet

Published online by Cambridge University Press:  17 August 2012

G. Natale
Affiliation:
University of Central Lancashire, Preston, PR1 2HE, UK email: gnatale@uclan.ac.uk
R. J. Tuffs
Affiliation:
Max Planck Institute für Kernphysik, Heidelberg, Germany
C. K. Xu
Affiliation:
Infrared Processing and Analysis Center, Caltech, Pasadena, USA
C. C. Popescu
Affiliation:
University of Central Lancashire, Preston, PR1 2HE, UK email: gnatale@uclan.ac.uk
J. Fischera
Affiliation:
Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Canada
U. Lisenfeld
Affiliation:
Department de Física Teórica y del Cosmos, Universidad de Granada, Granada, Spain
N. Lu
Affiliation:
Infrared Processing and Analysis Center, Caltech, Pasadena, USA
P. Appleton
Affiliation:
NASA Herschel Science Center, IPAC, Caltech, Pasadena, USA
M. Dopita
Affiliation:
Research School of Astronomy & Astrophysics, The Australian National University, Weston Creek, Australia
P.-A. Duc
Affiliation:
Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot, Dapnia/Service d'Astrophysique, CEA-Saclay, France
Y. Gao
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, China
W. Reach
Affiliation:
Spitzer Science Center, IPAC, Caltech, Pasadena, USA
J. Sulentic
Affiliation:
Instituto de Astrofísica de Andalucía, Granada, Spain
M. Yun
Affiliation:
Department of Astronomy, University of Massachusetts, Amherst, USA
Corresponding
E-mail address:
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Abstract

We analysed the Spitzer maps of Stephan's Quintet in order to investigate the nature of the dust emission associated with the X-ray emitting regions of the large scale intergalactic shock and of the group halo. This emission can in principle be powered by dust-gas particle collisions, thus providing efficient cooling of the hot gas. However the results of our analysis suggest that the dust emission from those regions is mostly powered by photons. Nonetheless dust collisional heating could be important in determining the cooling of the IGM gas and the large scale star formation morphology observed in SQ.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2012

References

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The dust emission SED of X-ray emitting regions in Stephan's Quintet
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