Mathematics – Logic
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop..269l&link_type=abstract
NOAO Proposal ID #2000B-0269
Mathematics
Logic
Scientific paper
We propose to obtain deep images of 23 very rich clusters in the fall-sky as part of a multiwavelength optical/radio/X-ray study of a complete sample of nearby, very rich (RC>=3, z<=0.16) Abell clusters. The goals of this work are to study an evolutionary sequence of cluster dynamical activity, and to relate these processes to star formation and AGN activity of the member galaxies. This low-z local sample contains clusters in a variety of dynamical states, and is uncomplicated by cosmological evolution in galaxy populations. With this sample we plan to relate the timescales of cluster-wide dynamical activity to galaxy evolution to understand the relative importance of different physical processes on member galaxies. The proposed observations will be used to make optical identifications from our deep radio survey, determine galaxy morphologies, refine richness measures for the clusters, and provide supporting data for followup optical spectroscopy. We plan to mosaic several pointings in order to obtain complete coverage over an entire Abell radius at R-band. We will obtain only single-pointings of the cluster cores in B-band in order to pin down the central blue-fraction and to estimate the redshift for 9 clusters without measured z's.
Ledlow Michael
Morrison Glenn
Owen Frazer
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