NOAO > Observing Info > Approved Programs > 2011B-0453
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NOAO > Observing Info > Approved Programs > 2011B-0453 |
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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.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2011B-0453 |
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