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Paper: Constraining the NFW Potential with Integral Field Spectroscopy of Low Surface Brightness Galaxies
Volume: 396, Formation and Evolution of Galaxy Disks
Page: 445
Authors: Kuzio de Naray, R.
Abstract: The NFW halo has been difficult to reconcile with low surface brightness (LSB) galaxy data. NFW fits to LSB rotation curves often have concentrations lower than expected for a ΛCDM cosmology, and high-resolution Hα velocity fields do not show the characteristic NFW pinching of isovelocity contours. We simulate the two-dimensional NFW halo and test several modifications to the potential in an attempt to simultaneously reconcile both the NFW velocity field and rotation curve with observed LSB galaxy data. We present mock velocity fields and rotation curves of axisymmetric and non-axisymmetric NFW potentials and compare our simulation results to high-resolution velocity fields from integral field spectroscopy of LSB galaxies.
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