Computer Science
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop...55b&link_type=abstract
NOAO Proposal ID #2000B-0055
Computer Science
Scientific paper
Galaxy-galaxy interactions are a driver of galaxy evolution, although their total contribution from high redshift to the present epoch remains unknown. To quantify the impact of interactions at the current epoch and to measure the selection effects relevant to pair counts at high redshift, we propose to image, in U, V, J, H, and K, a Fall sample of 64 low-redshift galaxy pairs and n-tuples with evidence for recent (≲ 10^7-year-old) star formation. Including the observations scheduled for this March, the sample will total 112 systems. With the images, we plan to measure the relative abundances of the old (several Gyr) and young (≲ 1 Gyr) stellar populations and to constrain the amount of dust. The observations are part of a larger study of a complete, statistical sample of galaxies in pairs and n- tuples selected from the CfA2 redshift survey. The goals of the study are to measure the durations, initial (stellar) mass functions, and total luminosities of tidally-triggered bursts of star formation - and to use these data to provide a foundation for measuring the merger rate as a function of cosmic epoch.
Barton Elizabeth J.
Geller Margaret J.
Kenyon Scott. J.
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