Infrared properties of Hickson Compact Groups

Authors
Abstract:
Compact groups of galaxies are systems of typically four or five galaxies in close proximity to one another. Due to this proximity, galaxies in groups have interacted with each other extensively. As result their morphology as well as the distribution of galaxy type differs substantially from what is observed among populations of galaxies in the field. The Hickson Compact Groups (HCGs) is a sample of 100 groups selected with well defined criteria which have been studied extensively in various wavelengths. Here we present the first analysis of spatially resolved 12micron mid-infrared properties of galaxies in 35 HCGs using archival data obtained with the Infrared Space Observatory. We estimate the star formation rates of the groups, quantify their dust content as a function of galaxy type, and contrast our results with the optical properties and molecular gas content of the systems.
Session:
Presentation Type:
Poster
Presenter:
Th. Bitsakis
Contact Name:
Thodoris Bitsakis
Email:
bitsakis@physics.uoc.gr
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