NOAO >   Observing Info >   Approved Programs >   2011B-0453

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Proposal Information for 2011B-0453


PI: David J. Batuski, University of Maine, batuski@umit.maine.edu
Address: Physics Department, 5709 Bennett Hall, Orono, ME 04469-5709, USA

CoI: Merida Batiste, University of Maine
CoI: Nicholas Meek, University of Maine
CoI: Chantal Balkowski, Observatoire de Peris, Meudon
CoI: Dominique Proust, Observatoire de Peris, Meudon

Title: Imaging the Aquarius and Microscopium Supercluaters of Galaxies

Abstract: We propose R and V imaging of nine Abell clusters in the Aquarius Supercluster and another seven clusters in the Microscopium Supercluster. These superclusters are two of the four identified highest density peaks in the cluster spatial distribution, and their spatial and mass scales are such that gravitational and dark energy effects on the supercluster dynamics are about equal in magnitude. The images will provide precise photometry of near-edge-on spirals and bright ellipticals to serve as bases for follow-on spectroscopic observations of supercluster dynamics that we are planning. We will determine distances to these clusters through Tully-Fisher and Dn-sigma analyses of the spiral and elliptical galaxies, respectively, to show whether or not these supercluster knots have broken with the Hubble flow and are now in collapse. These analyses will provide evidence of the effects of both dark matter and dark energy on these scales. Our new images will also be used for multiple analyses of properties within these extreme regions, such as luminosity function variations and color-magnitude and type segregation.


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NOAO >   Observing Info >   Approved Programs >   2011B-0453

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