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High Resolution Optical Velocity Fields of 11 Low Surface Brightness Galaxies

Rachel Kuzio de Naray·Stacy S. McGaugh·W. J. G. de Blok·A. Bosma
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Abstract

We present high resolution two-dimensional velocity fields from integral field spectroscopy along with derived rotation curves for eleven low surface brightness galaxies. We fit NFW and pseudo-isothermal halo models to the new data combined with previous long-slit and HI data. In most cases we find the pseudo-isothermal halo to better represent the data than the NFW halo, as the NFW concentrations are often lower than expected for a LambdaCDM cosmology. We also compare our results to previous studies and find that including the new two-dimensional optical data does not significantly alter the halo parameters, but does decrease the uncertainties by roughly a factor of 2.

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Rachel Kuzio de Naray, Stacy S. McGaugh, W. J. G. de Blok, A. Bosma. 2006-04-27. High Resolution Optical Velocity Fields of 11 Low Surface Brightness Galaxies. https://doi.org/10.1086/505345

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