Probing a Sample of Interacting and Ultraluminous Galaxies

Details Probing a Sample of Interacting and Ultraluminous Galaxies Probing a Sample of Interacting and Ultraluminous Galaxies

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop...32f&link_type=abstract

Spitzer Proposal ID #32

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Scientific paper

Galaxies closely interacting (or merging) with each other may trigger a wide range of activities, including star formation. These could profoundly alter the course of ordinary galactic evolution. Some of these objects are spectacular nearby examples of galaxy-galaxy interactions. Others, known as ULIGs (ultraluminous infrared galaxies), are among the most luminous objects in the local universe. High sensitivity, high resolution infrared data are essential in studying these galaxies, because a majority of them are found to be rich in gas and dust, making extinction a significant limiting factor at shorter wavelengths. We propose to image a limited sample of interacting and ultraluminous galaxies with IRAC and MIPS. Our main goal is to accurately measure the amount and extent of star forming activities and to explore their relationship to the dynamics of gravitational interaction.

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