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Arp 220 – IC 4553/4: understanding the system and diagnosing the ISM

Published online by Cambridge University Press:  01 March 2007

W. A. Baan
W. A. Baan*
Affiliation:
ASTRON, Oude Hoogeveensedijk 4, 7991PD Dwingeloo, The Netherlands email: baan@astron.nl
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Abstract

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Arp 220 is a nearby system in final stages of galaxy merger with powerful ongoing star-formation at and surrounding the two nuclei. Arp 220 was detected in HI absorption and OH Megamaser emission and later recognized as the nearest ultra-luminous infrared galaxy also showing powerful molecular and X-ray emissions. In this paper we review the available radio and mm-wave observational data of Arp 220 in order to obtain an integrated picture of the dense interstellar medium that forms the location of the powerful star-formation at the two nuclei.

Keywords

galaxies: ISMgalaxies: nucleiISM: moleculesISM: masersgalaxies: starburstgalaxies: OH Megamaser
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S242: Astrophysical Masers and their Environments , March 2007 , pp. 437 - 445
Copyright
Copyright © International Astronomical Union 2008

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