NOAO > Observing Info > Approved Programs > 2003A-0185
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NOAO > Observing Info > Approved Programs > 2003A-0185 |
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PI: Stacy McGaugh, University of Maryland, ssm@astro.umd.edu
Address: Astronomy Department, Computer and Space Sciences Bldg, College Park, MD 20742-2421, USA
CoI: Ji Hoon Kim, University of Maryland
CoI: Erwin de Blok, University of Cardiff
Title: Surface photometry of Low Surface Brightness Galaxies with Good Rotation Curves
Abstract:
We propose to obtain multicolor surface photometry of a sample of
low surface brightness (LSB) galaxies for which excellent rotation
curves exist, but which have no other data. The interpretation of LSB
galaxy rotation curves is less affected by disk-halo degeneracy than is
that of high surface brightness galaxies. This property makes LSB
galaxies excellent laboratories for tracing the distribution of dark
matter. This is an issue of fundamental interest which can directly
test the cuspy halo mass distribution predicted by CDM simulations.
Though suppressed relative to bright galaxies, the luminous mass
distribution of LSB galaxies does matter to the details of mass models.
The lack of photometry greatly restricts the analysis which can be done.
The data we propose to obtain here would remedy this situation.
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 > 2003A-0185 |
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