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Luminous Infrared Galaxies in a Merging Sequence: ISO Observations

Published online by Cambridge University Press:  25 May 2016

C.-Y. Hwang ,
K.Y. Lo ,
Y. Gao ,
R.A. Gruendl  and
N.-Y. Lu
C.-Y. Hwang
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 1-87, Nankang, Taipei, Taiwan 115, R.O.C.
K.Y. Lo
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 1-87, Nankang, Taipei, Taiwan 115, R.O.C.
Y. Gao
Affiliation:
Department of Astronomy, University of Illinois, U.S.A.
R.A. Gruendl
Affiliation:
Department of Astronomy, University of Illinois, U.S.A.
N.-Y. Lu
Affiliation:
IPAC, Caltech, U.S.A.

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We report mid-infrared images of several luminous infrared galaxies (LIGs) taken with ISOCAM on the Infrared Space Observatory (ISO). These LIGs were chosen to represent different phases of a merger sequence of galaxy-galaxy interaction with special emphasis on early/intermediate stages of merging. The molecular gas distribution of these LIGs has also been mapped at high spatial resolution (see contribution by Gao et al., this volume). The goal is to do a synoptic study of the evolution of physical conditions in these LIGs along the merger sequence.