NOAO >   Observing Info >   Approved Programs >   2007B-0336

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Proposal Information for 2007B-0336


PI: Heather D. Berrier, University of California, Irvine, hguenthe@uci.edu
Address: Physics Department, 4129 Reines Hall, UCI Dept of Physics and Astronomy, Irvine, CA 92697, USA

CoI: Elizabeth Barton, University of California, Irvine

Title: Galaxy Interactions

Abstract: Galaxy mergers and interactions have affected most of the luminous galaxies that we see today. Consequently, understanding galaxy interactions and their results, such as tidally-triggered star formation, is fundamental to understanding galaxy evolution. We propose to complete multi-wavelength measurements of 190 galaxies in pairs and groups, selected from the Updated Zwicky Catalog (UZC) based on proximity rather than morphology, in an attempt to characterize the aggregate effect of interactions on typical galaxies. We have data in the Johnson U, V, B, and R bands, as well as optical spectra, and some J, H and K band data. We wish to complete our J, H and K band data using the Simultaneous Quad Infrared Imaging Device on the 2 meter-telescope at KPNO. Near-infrared data is necessary to characterize the older stellar populations in these systems. The H- K colors will also allow us to detect hot dust around embedded star formation. This data will be used in conjunction with the data already obtained, as well as far-infrared data. It is our hope that these measurements will enable us to consistently distinguish recent bursty star formation from ongoing star formation.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2007B-0336

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