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Multi-Color Imaging of Selected Southern Interacting Galaxies

Published online by Cambridge University Press:  12 April 2016

Eric P. Smith
Affiliation:
Laboratory for Astronomy and Solar Physics, Goddard Space Flight Center, Greenbelt, MD 20771USA
Paul Hintzen
Affiliation:
Laboratory for Astronomy and Solar Physics, Goddard Space Flight Center, Greenbelt, MD 20771USA

Extract

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We present preliminary results from a study of selected Arp-Madore Southern Hemisphere peculiar galaxies. Broadband CCD images (BVRI) of a subset of these galaxies allow us to study each galaxy’s optical morphology, color, and (in a crude manner) degree of nuclear activity, and to compare them with similar data we possess on other active galaxies. Many of these galaxies have optical morphologies closely resembling those of powerful radio galaxies (Smith and Heckman 1989), yet their radio emission is unremarkable. Accurate positions for subsequent spectroscopic studies have been determined along with broad band photometry and morphology studies. Detailed observations of these comparatively bright, low-redshift, well-resolved interacting systems should aid our understanding of the role interactions play in triggering galaxy activity. This work is the initial effort in a long term project to study the role played by the dynamics of the interaction in the production and manifestations of activity in galaxies, and the frequency of galaxy mergers.

Type
I. Classical Observations of Pairs
Copyright
Copyright © NASA 1990

References

Arp, H. C., and Madore, B. F. 1987, A Catalogue of Southern Peculiar Galaxies and Associations (Cambridge University Press).Google Scholar
Burstein, D. A., and Heiles, C. 1982, A. J., 87, 1165.Google Scholar
Smith, E. P., and Heckman, T. M. 1989, Ap.J. Suppl, 69, 365.CrossRefGoogle Scholar