Computer Science
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop..189b&link_type=abstract
NOAO Proposal ID #2000A-0189
Computer Science
Scientific paper
Galaxy-galaxy interactions are a significant cause 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 possible selection effects at high redshift, we propose to image a sample of galaxy pairs and n-tuples with evidence for recent (≲ 10^7-year-old) star formation in U, V, J, H, and K. With the images, we plan to measure the relative abundances of the old (several Gyr) and young (≲ 1 Gyr) stellar populations and the amount of dust. The observations are part of a larger study of a complete, statistical sample of 786 galaxies in pairs and n-tuples selected from the CfA2 redshift survey. The goals of the larger study are to measure the durations, initial (stellar) mass functions, and total luminosities of tidally-triggered bursts of star formation - and to use this information to determine the selection function of high-redshift pairs and thus to measure the merger rate at high z.
Barton Elizabeth J.
Geller Margaret J.
Kenyon Scott. J.
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