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PAH features in Infrared Luminous Galaxies: Results from Michelle

Published online by Cambridge University Press:  26 May 2016

M. S. Clemens ,
B. Nikolic ,
P. Alexander ,
G. Cotter  and
M. S. Longair
M. S. Clemens
Affiliation:
Università degli Studi di Padova, Italy
B. Nikolic
Affiliation:
Astrophysics Group, Cavendish Lab., Cambridge, U.K.
P. Alexander
Affiliation:
Astrophysics Group, Cavendish Lab., Cambridge, U.K.
G. Cotter
Affiliation:
Astrophysics Group, Cavendish Lab., Cambridge, U.K.
M. S. Longair
Affiliation:
Astrophysics Group, Cavendish Lab., Cambridge, U.K.

Abstract

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We present recent results from mid-infrared observations of a sample of nearby, infrared luminous starbursts and AGN made with the new mid-infrared instrument, “Michelle”, on UKIRT. Narrow band imaging in the 7-13 micron range with sub-arcsec resolution has been used to study the spatial distribution of polycyclic aromatic hydrocarbon (PAH) features. The comparison of these sub-arcsecond resolution data with radio continuum data at similar resolution can be used to determine, 1) the sources of excitation required for PAH emission, and 2) whether PAH features are a measure of the relative contribution of star formation and AGN to the bolometric energy output of a galaxy. Unlike the far-infrared emission from dust, that in the mid-infrared can be used to discriminate between different heating sources.

Type
Part 2. Origin
Information
Symposium - International Astronomical Union , Volume 217: Recycling Intergalactic and Interslettar Matter , 2004 , pp. 216 - 217
Copyright
Copyright © Astronomical Society of the Pacific 2004